阅读说明：本技术 一种干式磁选机分选自动调节系统及方法 (Automatic sorting adjusting system and method for dry magnetic separator ) 是由 王芝伟 刘永振 冉红想 史佩伟 尚红亮 彭欣苓 于 2020-09-01 设计创作，主要内容包括：本发明提供了一种干式磁选机分选自动调节系统及方法,其结构包括干式磁选机本体,给矿输送带与分选磁筒之间通过给料机连接,分矿装置位于分选磁筒的下方；精矿输送带和/或尾矿输送带的上方设有对矿石铁含量进行检测的矿石数据采集单元,控制模块控制转速调节装置对分选磁筒转速的调节以及分矿调节装置对分矿装置位置的调节。本发明矿石在分选磁筒的高速转动下分离实现对精矿和尾矿的分离,控制模块获取精矿或尾矿的铁含量,与精矿铁含量值设定值或尾矿铁含量设定值进行比对,并根据比对结果控制分选磁筒转速或分矿板的位置实现对精矿和尾矿品质的控制,可有效提高矿石分选稳定性,降低有价矿石损失,提高矿石分选效率。(The invention provides an automatic separation adjusting system and method for a dry magnetic separator, wherein the automatic separation adjusting system structurally comprises a dry magnetic separator body, an ore feeding conveyer belt is connected with a separation magnetic cylinder through a feeder, and an ore separation device is positioned below the separation magnetic cylinder; an ore data acquisition unit for detecting the iron content of the ore is arranged above the concentrate conveying belt and/or the tailing conveying belt, and the control module controls the rotation speed adjusting device to adjust the rotation speed of the separation magnetic cylinder and the position of the ore separation adjusting device. According to the invention, the ore is separated under the high-speed rotation of the separation magnetic cylinder to realize the separation of the concentrate and the tailings, the control module obtains the iron content of the concentrate or the tailings, the iron content is compared with the set value of the iron content of the concentrate or the set value of the iron content of the tailings, and the rotating speed of the separation magnetic cylinder or the position of the separation plate is controlled according to the comparison result to realize the control of the quality of the concentrate and the tailings, so that the ore separation stability can be effectively improved, the valuable ore loss is reduced, and the ore separation efficiency is improved.)

1. The utility model provides a dry-type magnet separator selects separately automatic regulating system which characterized in that: comprises a sorting mechanism, a ore separating device, a grade analyzing module, an adjusting module and a control module, wherein,

the separation mechanism comprises an ore feeding conveyer belt and a separation magnetic cylinder and is used for separating raw ores into concentrate and tailings;

the ore separation device is positioned below the separation magnetic cylinder and is used for isolating the separated concentrate from tailings;

the grade analysis module comprises an ore data acquisition unit and an ore grade analysis unit and is used for acquiring iron content data of the ore, analyzing and processing the iron content data to obtain ore grade information and transmitting the ore grade information to the control module;

the adjusting module comprises an ore separation adjusting device and a rotating speed adjusting device, and the ore separation adjusting device and the rotating speed adjusting device are respectively connected with the control module and are respectively used for adjusting the position of the ore separation device or adjusting the rotating speed of the separation magnetic cylinder;

the control module comprises an information database and an analysis system, the control module is connected with the grade analysis module, the information database is used for storing actual production data and set production data, the analysis system analyzes the difference between the actual production data and the set production data on line, and controls the adjusting module to adjust the position of the ore separation device or the rotating speed of the separation magnetic cylinder according to the analysis result.

2. The automatic sorting adjustment system for dry magnetic separators as claimed in claim 1, wherein: the ore feeding conveying belt is connected with the separation magnetic cylinder through a feeder, a magnetic system required by ore separation is arranged in the separation magnetic cylinder, and a concentrate conveying belt and a tailing conveying belt are respectively arranged on two sides of the ore separation device; the ore data acquisition unit is arranged above the concentrate conveying belt and/or the tailing conveying belt, and the iron content of the concentrate and/or the iron content of the tailings are acquired through the ore data acquisition unit.

3. The automatic sorting adjustment system for dry magnetic separators as claimed in claim 1, wherein: the control module is a programmable controller, the programmable controller comprises a storage unit and an analysis unit, the programmable controller is further respectively connected with the ore data acquisition unit and used for acquiring the iron content of the concentrate and/or the iron content of the tailings, the storage unit stores a set value of the iron content of the concentrate and/or a set value of the iron content of the tailings, the analysis unit compares the actually acquired iron content of the concentrate and/or the iron content of the tailings with the set value of the iron content of the concentrate and/or the set value of the iron content of the tailings, and the programmable controller controls the rotating speed adjusting device to adjust the rotating speed of the separation magnetic cylinder or controls the separation adjusting device to adjust the position of the separation device according to a comparison result.

4. The automatic sorting adjustment system for dry magnetic separators as claimed in claim 1, wherein: the ore feeding device comprises an ore feeding conveyer belt, a concentrate conveyer belt and a tailing conveyer belt, wherein an ore feeding scale is arranged on the lower surface of the ore feeding conveyer belt, a concentrate scale is arranged on the lower surface of the concentrate conveyer belt, a tailing scale is arranged on the lower surface of the tailing conveyer belt, and a control module is connected with the ore feeding scale, the concentrate scale and the tailing scale respectively and used for obtaining ore feeding yield, concentrate yield and tailing yield.

5. The automatic sorting adjustment system for dry magnetic separators as claimed in claim 4, wherein: the storage unit further stores a concentrate calculated yield and/or a tailing calculated yield, the programmable controller calculates an actual concentrate yield and/or an actual tailing yield according to the collected ore feeding amount, the concentrate yield and/or the tailing yield, the analysis unit compares the actual concentrate yield and/or the actual tailing yield with the concentrate calculated yield and/or the tailing calculated yield, and the programmable controller controls the rotating speed adjusting device to adjust the rotating speed of the separation magnetic cylinder or controls the separation adjusting device to adjust the position of the separation device according to the comparison result.

6. The automatic sorting adjustment system for dry magnetic separators as claimed in claim 1, wherein: the ore separation device comprises an ore separation plate, the ore separation plate is connected with the ore separation adjusting device, two sides of the separation magnetic cylinder are respectively provided with one set of the ore separation adjusting device, the ore separation plate is driven by the ore separation adjusting device to move along the concentrate conveying belt and the tailing conveying belt, and the ore separation plate is provided with a positioning device which is connected with the control module.

7. The automatic sorting adjustment system for dry magnetic separators as claimed in claim 6, wherein: the ore separation adjusting device is a screw rod adjusting mechanism, a sliding block is arranged on the screw rod adjusting mechanism and fixedly connected with the ore separation device, and the sliding block is driven by the screw rod adjusting mechanism to horizontally move so as to drive the ore separation device to horizontally move;

the sliding block comprises a supporting body, a roller shaft, a roller, a connecting seat and a blocking plate, wherein a square hole is formed in the middle of the supporting body, a positioning block is arranged in the square hole, an internal thread matched with the driving screw rod is formed in the middle of the positioning block, circular holes are formed in two axial sides of the supporting body, and the driving screw rod penetrates through the supporting body and the positioning block to be sleeved together;

the connecting seat or the plugging plate is respectively and fixedly arranged at two ports of the square hole of the supporting body, and the connecting seat is connected with the ore separating plate; a roller groove is formed in the middle of the top of the support body shaft, concave grooves are formed in two ends of the roller groove, the roller shaft is installed in the concave grooves, the rollers are rotatably installed at two ends of the roller shaft, and the rollers are located in the roller grooves;

the top and the bottom of supporter are equipped with unable adjustment base and upper cover plate respectively, unable adjustment base's upper surface with the lower surface of upper cover plate is equipped with the guide rail respectively, two at roller both ends the gyro wheel is located the both sides of guide rail, make through two the cooperation of gyro wheel the sliding block is followed the guide rail slides.

8. The control method of the automatic sorting regulation system of the dry magnetic separator as claimed in claim 1 or 2, wherein: the method comprises the following steps:

s1, when the difference value between the actually obtained iron content of the concentrate and the iron content of the tailings and the set value of the iron content of the concentrate or the set value of the iron content of the tailings is in the error control range, the system is judged to operate stably, and the collected data are reliable;

s2, when the iron content of the actually obtained concentrate is larger than the set value of the iron content of the concentrate, or the iron content of the tailings is larger than the set value of the iron content of the tailings, the control module controls the ore separation adjusting device to drive the ore separation device to move to a position close to the tailings conveying belt, or the control module controls the rotating speed adjusting device to reduce the rotating speed of the separation magnetic cylinder, or the ore separation device is close to the tailings conveying belt and the rotating speed of the separation magnetic cylinder is reduced at the same time, and finally the difference value between the actually obtained iron content of the concentrate or the iron content of the tailings and the set value of the iron content of the concentrate or the iron content of the tailings is within an error control range;

and S3, when the iron content of the actually obtained concentrate is smaller than the set value of the iron content of the concentrate, or the iron content of the tailings is smaller than the set value of the iron content of the tailings, the control module controls the ore separation adjusting device to drive the ore separation device to move to a position close to the concentrate conveying belt, or the control module controls the rotating speed adjusting device to increase the rotating speed of the separation magnetic cylinder, or the ore separation device is close to the concentrate conveying belt and the rotating speed of the separation magnetic cylinder is increased at the same time, and finally the difference value between the actually obtained iron content of the concentrate or the iron content of the tailings and the set value of the iron content of the concentrate or the iron content of the tailings is within an error control range.

9. The control method of the automatic sorting regulation system of the dry magnetic separator as claimed in claim 5, wherein: the method comprises the following steps:

s1, when the difference value between the obtained actual concentrate yield and actual tailing yield and the calculated concentrate yield and tailing yield is within the error control range, judging that the system runs stably and the collected data is reliable;

s2, when the difference between the obtained actual concentrate yield and the actual tailing yield and the calculated concentrate yield and the calculated tailing yield is beyond the error control range, adjusting according to the change trend of the actual concentrate yield and the actual tailing yield relative to the former value:

s201, when the actual concentrate yield is increased (namely the actual tailing yield is reduced), the control module controls the ore separation adjusting device to drive the ore separation device to move to a position close to the concentrate conveying belt, or the control module controls the rotating speed adjusting device to increase the rotating speed of a separation magnetic cylinder, or the ore separation device is close to the concentrate conveying belt and the rotating speed of the separation magnetic cylinder is increased at the same time;

s201, when the actual concentrate yield is reduced (namely the actual tailing yield is increased), the control module controls the ore separation adjusting device to drive the ore separation device to move towards the position close to the tailing conveying belt, or the control module controls the rotating speed adjusting device to reduce the rotating speed of the separation magnetic cylinder, or the ore separation device is close to the tailing conveying belt and the rotating speed of the separation magnetic cylinder is reduced at the same time.

10. The control method of the automatic sorting regulation system of the dry magnetic separator as claimed in claim 5, wherein: the method comprises the following steps:

s1, when the difference value between the obtained concentrate recovery rate and the preset recovery rate value is within the error control range, judging that the system runs stably and the collected data is reliable;

s2, when the difference value between the obtained concentrate recovery rate and the preset recovery rate value is beyond the error control range, adjusting according to the change trend of the concentrate recovery rate and the preset recovery rate value relative to the former value:

s201, if the recovery rate of concentrate is increased, the control module controls the ore separation adjusting device to drive the ore separation device to move towards the direction of the concentrate conveying belt, or the control module controls the rotating speed adjusting device to increase the rotating speed of the separation magnetic cylinder, or the ore separation device is close to the concentrate conveying belt and the rotating speed of the separation magnetic cylinder is increased at the same time;

s202, the recovery rate of concentrate is reduced, then the control module controls the ore separation adjusting device to drive the ore separation device to move towards the direction of the tailing conveyer belt, or the control module controls the rotating speed adjusting device to reduce the rotating speed of the separation magnetic cylinder, or the ore separation device is close to the tailing conveyer belt and the rotating speed of the separation magnetic cylinder is reduced at the same time.

Technical Field

The invention relates to the technical field of ore separation, in particular to an automatic separation adjusting system and method for a dry magnetic separator.

Background

Dry separation is an important technical means for separating iron ores, and cylindrical dry magnetic separation equipment such as a dry magnetic roller and a dry cylindrical magnetic separator is important equipment in the iron ore dry separation process, so that the iron ores can be effectively enriched, and the ore grade is improved. With the large-scale mine establishment and the deterioration of resource endowment conditions, the requirements on large-throughput and high-precision separation equipment are increasingly urgent. The traditional dry magnetic separation equipment needs large-scale and automatic upgrading and optimization modification to adapt to the development of the iron ore industry.

In the process of barrel type dry separation, the separation of ores with magnetic differences, such as strong magnetic ores, weak magnetic ores, non-magnetic ores and the like, is realized by relying on a magnetic field and centrifugal force generated by rotation of a barrel body, and the separated ores are separated into concentrate, middlings or tailing components meeting requirements under the obstruction of an ore separation device. The rotating speed and the position of the ore separation device are important parameters for the operation of the dry separation equipment. In production, when the magnetism of the mineral is weak and the embedding granularity of the magnetic material is fine, the rotating speed of the cylinder body can be reduced or the ore separation device can be adjusted to the tailing side, so that the recovery rate of the magnetic ore is ensured. When the magnetism of the minerals is strong and the embedding granularity of the magnetic material is large, the rotating speed of the cylinder body can be increased or the ore separation device can be adjusted towards the concentrate end, so that the gangue inclusion of the concentrate is reduced, and the waste throwing rate of tailings is ensured.

In addition, in the ore separation process, the ore selection grade can be along with the difference of the mined ores, the ore properties such as grade, humidity, particle size distribution and the like can fluctuate at any time, the operation parameters of dry separation equipment cannot be adjusted in real time, the effective recovery of valuable ores cannot be guaranteed, and the loss is reduced. The rotating speed and the ore separation device of the conventional dry-type drum magnetic separator mainly depend on manual intervention and adjustment so as to ensure the stability of dry separation indexes. The regulation is discontinuous, and some ore enterprises do not even carry out targeted regulation. This easily causes dry separation efficiency unstability, easily leads to the concentrate yield too high, and the gangue is mixed with seriously, or the tailing abandonment rate is too high, and valuable ore loses seriously. The adjustment of the rotating speed and the ore separation device of the existing dry separation equipment mainly depends on manual intervention and adjustment, automatic adjustment cannot be realized, and the ore separation speed and the separation quality are seriously influenced.

Disclosure of Invention

The invention aims to provide an automatic adjusting system and method for sorting of a dry magnetic separator, which can automatically adjust the rotating speed of the dry magnetic separator and the position of an ore sorting device according to the sorting effect of ores in the sorting process of the dry magnetic separator, can realize the real-time response of mechanical operation parameters of the dry magnetic separator and ore sorting process parameters, and dynamically adjust the yield and process indexes of each component in the dry magnetic separator.

The invention provides an automatic sorting regulating system of a dry magnetic separator, which comprises a sorting mechanism, an ore sorting device, a grade analysis module, a regulating module and a control module, wherein,

the separation mechanism comprises an ore feeding conveyer belt and a separation magnetic cylinder and is used for separating raw ores into concentrate and tailings;

the ore separation device is positioned below the separation magnetic cylinder and is used for isolating the separated concentrate from tailings;

the grade analysis module comprises an ore data acquisition unit and an ore grade analysis unit and is used for acquiring iron content data of the ore, analyzing and processing the iron content data to obtain ore grade information and transmitting the ore grade information to the control module;

the adjusting module comprises an ore separation adjusting device and a rotating speed adjusting device, and the ore separation adjusting device and the rotating speed adjusting device are respectively connected with the control module and are respectively used for adjusting the position of the ore separation device or adjusting the rotating speed of the separation magnetic cylinder;

the control module comprises an information database and an analysis system, the control module is connected with the grade analysis module, the information database is used for storing actual production data and set production data, the analysis system analyzes the difference between the actual production data and the set production data on line, and controls the adjusting module to adjust the position of the ore separation device or the rotating speed of the separation magnetic cylinder according to the analysis result.

Furthermore, the ore feeding conveying belt is connected with the separation magnetic cylinder through a feeder, a magnetic system required by ore separation is arranged in the separation magnetic cylinder, and a concentrate conveying belt and a tailing conveying belt are respectively arranged on two sides of the ore separation device; the ore data acquisition unit is arranged above the concentrate conveying belt and/or the tailing conveying belt, and the iron content of the concentrate and/or the iron content of the tailings are acquired through the ore data acquisition unit.

Further, the control module is a programmable controller, the programmable controller includes a storage unit and an analysis unit, the programmable controller is further connected to the ore data acquisition unit, and is configured to acquire the iron content of the concentrate and/or the iron content of the tailings, the storage unit stores a set value of the iron content of the concentrate and/or a set value of the iron content of the tailings, the analysis unit compares the actually acquired iron content of the concentrate and/or the iron content of the tailings with the set value of the iron content of the concentrate and/or the set value of the iron content of the tailings, and the programmable controller controls the rotation speed adjustment device to adjust the rotation speed of the separation magnetic cylinder or controls the separation adjustment device to adjust the position of the separation device according to the comparison result.

Furthermore, the lower surface of the ore feeding conveyer belt is provided with an ore feeding scale, the lower surface of the concentrate conveyer belt is provided with a concentrate scale, the lower surface of the tailing conveyer belt is provided with a tailing scale, and the control module is respectively connected with the ore feeding scale, the concentrate scale and the tailing scale and is used for acquiring ore feeding yield, concentrate yield and tailing yield.

Further, the storage unit further stores a calculated concentrate yield and/or a calculated tailing yield, the programmable controller calculates an actual concentrate yield and/or an actual tailing yield according to the collected ore feeding amount, the collected concentrate yield and/or the collected tailing yield, the analysis unit compares the actual concentrate yield and/or the actual tailing yield with the calculated concentrate yield and/or the calculated tailing yield, and the programmable controller controls the rotating speed adjusting device to adjust the rotating speed of the sorting magnetic cylinder or controls the ore sorting adjusting device to adjust the position of the ore sorting device according to a comparison result.

Further, the ore separation device comprises an ore separation plate, the ore separation plate is connected with the ore separation adjusting device, two sides of the separation magnetic cylinder are respectively provided with one ore separation adjusting device, the ore separation plate is driven by the ore separation adjusting device to move along the concentrate conveying belt and the tailing conveying belt, and the ore separation plate is provided with a positioning device which is connected with the control module.

Furthermore, the ore separation adjusting device is a screw rod adjusting mechanism, a sliding block is arranged on the screw rod adjusting mechanism and fixedly connected with the ore separation device, and the sliding block is driven by the screw rod adjusting mechanism to horizontally move so as to drive the ore separation device to horizontally move;

the sliding block comprises a supporting body, a roller shaft, a roller, a connecting seat and a blocking plate, wherein a square hole is formed in the middle of the supporting body, a positioning block is arranged in the square hole, an internal thread matched with the driving screw rod is formed in the middle of the positioning block, circular holes are formed in two axial sides of the supporting body, and the driving screw rod penetrates through the supporting body and the positioning block to be sleeved together;

the connecting seat or the plugging plate is respectively and fixedly arranged at two ports of the square hole of the supporting body, and the connecting seat is connected with the ore separating plate; a roller groove is formed in the middle of the top of the support body shaft, concave grooves are formed in two ends of the roller groove, the roller shaft is installed in the concave grooves, the rollers are rotatably installed at two ends of the roller shaft, and the rollers are located in the roller grooves;

the top and the bottom of supporter are equipped with unable adjustment base and upper cover plate respectively, unable adjustment base's upper surface with the lower surface of upper cover plate is equipped with the guide rail respectively, two at roller both ends the gyro wheel is located the both sides of guide rail, make through two the cooperation of gyro wheel the sliding block is followed the guide rail slides.

The automatic sorting adjusting method for the dry magnetic separator comprises the following steps:

s1, when the difference value between the actually obtained iron content of the concentrate and the iron content of the tailings and the set value of the iron content of the concentrate or the set value of the iron content of the tailings is in the error control range, the system is judged to operate stably, and the collected data are reliable;

s2, when the iron content of the actually obtained concentrate is larger than the set value of the iron content of the concentrate, or the iron content of the tailings is larger than the set value of the iron content of the tailings, the control module controls the ore separation adjusting device to drive the ore separation device to move to a position close to the tailings conveying belt, or the control module controls the rotating speed adjusting device to reduce the rotating speed of the separation magnetic cylinder, or the ore separation device is close to the tailings conveying belt and the rotating speed of the separation magnetic cylinder is reduced at the same time, and finally the difference value between the actually obtained iron content of the concentrate or the iron content of the tailings and the set value of the iron content of the concentrate or the iron content of the tailings is within an error control range;

and S3, when the iron content of the actually obtained concentrate is smaller than the set value of the iron content of the concentrate, or the iron content of the tailings is smaller than the set value of the iron content of the tailings, the control module controls the ore separation adjusting device to drive the ore separation device to move to a position close to the concentrate conveying belt, or the control module controls the rotating speed adjusting device to increase the rotating speed of the separation magnetic cylinder, or the ore separation device is close to the concentrate conveying belt and the rotating speed of the separation magnetic cylinder is increased at the same time, and finally the difference value between the actually obtained iron content of the concentrate or the iron content of the tailings and the set value of the iron content of the concentrate or the iron content of the tailings is within an error control range.

An automatic sorting adjustment method for a dry magnetic separator further comprises the following steps:

s1, when the difference value between the obtained actual concentrate yield and actual tailing yield and the calculated concentrate yield and tailing yield is within the error control range, judging that the system runs stably and the collected data is reliable;

s2, when the difference between the obtained actual concentrate yield and the actual tailing yield and the calculated concentrate yield and the calculated tailing yield is beyond the error control range, adjusting according to the change trend of the actual concentrate yield and the actual tailing yield relative to the former value:

s201, when the actual concentrate yield is increased (namely the actual tailing yield is reduced), the control module controls the ore separation adjusting device to drive the ore separation device to move to a position close to the concentrate conveying belt, or the control module controls the rotating speed adjusting device to increase the rotating speed of a separation magnetic cylinder, or the ore separation device is close to the concentrate conveying belt and the rotating speed of the separation magnetic cylinder is increased at the same time;

s201, when the actual concentrate yield is reduced (namely the actual tailing yield is increased), the control module controls the ore separation adjusting device to drive the ore separation device to move to a position close to the tailing conveying belt, or the control module controls the rotating speed adjusting device to reduce the rotating speed of the separation magnetic cylinder, or the ore separation device is close to the tailing conveying belt and the rotating speed of the separation magnetic cylinder is reduced at the same time;

an automatic sorting adjustment method for a dry magnetic separator further comprises the following steps:

s1, when the difference value between the obtained concentrate recovery rate and the preset recovery rate value is within the error control range, judging that the system runs stably and the collected data is reliable;

s2, when the difference value between the obtained concentrate recovery rate and the preset recovery rate value is beyond the error control range, adjusting according to the change trend of the concentrate recovery rate and the preset recovery rate value relative to the former value:

s201, if the recovery rate of concentrate is increased, the control module controls the ore separation adjusting device to drive the ore separation device to move towards the direction of the concentrate conveying belt, or the control module controls the rotating speed adjusting device to increase the rotating speed of the separation magnetic cylinder, or the ore separation device is close to the concentrate conveying belt and the rotating speed of the separation magnetic cylinder is increased at the same time;

s202, the recovery rate of concentrate is reduced, then the control module controls the ore separation adjusting device to drive the ore separation device to move towards the direction of the tailing conveyer belt, or the control module controls the rotating speed adjusting device to reduce the rotating speed of the separation magnetic cylinder, or the ore separation device is close to the tailing conveyer belt and the rotating speed of the separation magnetic cylinder is reduced at the same time.

According to the technical scheme, ores are fed from the upper part of the separation magnetic cylinder through the feeding conveyor belt by the vibrating feeder, and the ores are separated under the high-speed rotation of the separation magnetic cylinder to form different throwing tracks, so that separation of concentrate and tailings is realized. The control module can control the position of the separation magnetic cylinder or the separation plate to realize the control of the quality of the concentrate and the tailings, the control module obtains the iron content of the concentrate or the tailings, compares the iron content with the set value of the iron content of the concentrate or the set value of the iron content of the tailings, and controls the rotating speed of the separation magnetic cylinder or the position of the separation plate to realize the control of the quality of the concentrate and the tailings according to the comparison result. The rotating speed of the separation magnetic cylinder is increased, the ore removal amount can be increased, the concentrate grade is favorably improved, the ore removal amount can be reduced by reducing the rotating speed of the separation magnetic cylinder, and the ore loss is reduced. When the position of the ore separating plate is close to the tailing end, the concentrate grade is reduced, the tailing grade is reduced, and the concentrate recovery rate is improved; the position of the ore separation plate moves close to the concentrate end, the concentrate grade is improved, the tailing grade is improved, the concentrate recovery rate is reduced, and the tailing waste disposal rate is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a top view of the structure of the present invention;

FIG. 3 is a schematic structural diagram of the ore separation regulating device of the present invention;

FIG. 4 is a cross-sectional view of the slider A-A of FIG. 3 according to the present invention;

FIG. 5 is a schematic structural view of a sorting magnetic cartridge of the present invention;

description of reference numerals:

in the figure: 1-feeding conveyer belt, 2-separating magnetic cylinder, 201-cylinder, 202-magnetic system, 3-separating plate, 4-feeder, 5-concentrate conveyer belt, 6-tailing conveyer belt, 7-separating adjusting device, 8-fixed base, 9-upper cover plate, 10-servo motor, 11-driving screw rod, 12-sliding block, 13-guide rail, 14-support body, 15-roller groove, 16-concave groove, 17-roller, 18-roller shaft, 19-positioning block, 20-position sensor, 21-ore data acquisition unit, 22-feeding scale, 23-concentrate scale, 24-tailing scale, 25-frame, 26-box, 27-connecting seat and 28-blocking plate;

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1, 2, 3, 4 and 5:

the utility model provides a dry-type magnet separator selects separately automatic regulating system, includes sorting mechanism, ore separation device, grade analysis module, adjusting module and control module, wherein:

the sorting mechanism comprises a feeding conveyer belt 1 and a sorting magnetic cylinder 2, the feeding conveyer belt 1 is connected with the sorting magnetic cylinder 2 through a feeder 4, the sorting magnetic cylinder 2 comprises a cylinder body 201, a magnetic system 202 required by ore sorting is arranged in the cylinder body 201, the magnetic system 202 is arranged in the cylinder body 201, a gap is formed between the magnetic system 202 and the cylinder body 201, and the cylinder body 201 and the magnetic system 202 can rotate mutually.

The cylinder 201 is disposed outside the magnetic system 202 and can rotate independently of the magnetic system 202. During ore separation, magnetic ores are adsorbed on the surface of the barrel 201 and separated from the surface of the barrel after rotating to the edge of a magnetic field along with the barrel 201 by means of friction force between the ores and the surface of the barrel 201, most of non-magnetic ores are thrown off from the surface of the barrel by centrifugal force generated when the barrel 201 rotates, and part of impurity ores are separated in the magnetic rolling separation process of the magnetic ores.

The separation magnetic cylinder 2 is fixed through the support 25, and the outside of the separation magnetic cylinder 2 is provided with a box 26, protects the separation magnetic cylinder through the box 26, and prevents the ore from splashing from both sides of the separation magnetic cylinder 2.

Divide ore plate 3 to be located the below of selecting separately magnetism section of thick bamboo 2, divide ore plate 3 to design into the triangle-shaped structure, will separate the ore that the magnetism section of thick bamboo 2 was sieved through selecting separately according to concentrate and tailing, the ore is at the separation process of selecting separately magnetism section of thick bamboo 2, and different magnetic ore, some absorption are on the barrel surface, and some throw a section of thick bamboo surface in different regions, divide ore plate 3 to separate the ore that the magnetism section of thick bamboo 2 was selected separately, form required ore product component. And a concentrate conveyer belt 5 and a tailing conveyer belt 6 are respectively arranged on two sides of the ore separating plate 3, concentrate separated by the ore separating plate 3 enters the concentrate conveyer belt 5 for transmission, and tailings enter the tailing conveyer belt 6 for transmission.

The ore separating plate 3 is connected with the ore separating adjusting device, and the ore separating plate 3 moves between the concentrate conveying belt 5 and the tailing conveying belt 6 under the driving of the ore separating adjusting device 7.

The ore separation adjusting device 7 can adopt a screw rod adjusting mechanism, and comprises a fixed base 8, an upper cover plate 9, a servo motor 10, a driving screw rod 11, a sliding block 12 and a positioning block 19, wherein the driving screw rod 11 is arranged in a space formed by the fixed base 8 and the upper cover plate 9, guide rails 13 arranged along the length direction of the driving screw rod 11 are respectively arranged on the upper surface of the fixed base 8 and the lower surface of the upper cover plate 9, the upper end and the lower end of the sliding block 12 are respectively arranged in the guide rails 13, the positioning block 19 is sleeved on the driving screw rod 11, an internal thread matched with the driving screw rod 11 is arranged in the middle of the positioning block 19, the sliding block 12 is sleeved on the driving screw rod 11, and can move back and forth along the guide rails 13 along with the rotation of the driving screw rod 11 under the driving of the positioning block 19.

Simultaneously, in order to improve sliding block 12's stability and the accuracy to dividing the ore deposit board control, sliding block 12 includes supporter 14, roller 18, gyro wheel 17, connecting seat 27 and closure plate 28, open at the middle part of supporter 14 has the quad slit, the circular port has been seted up to the axial both sides, the drive lead screw passes through the circular port and is in the same place sliding block and locating piece suit, locating piece 19 is independent in the quad slit at supporter 14 middle part, the clearance that leaves certain axial between the quad slit inside of locating piece 19's front and back terminal surface and supporter 14, locating piece 19 four corners is the arc surface, prevent putting the card when removing and pause. The connecting seat 27 is a square structure, one end of the connecting seat is provided with a flange to be connected with the ore separating plate, the other end of the connecting seat is embedded into a square hole in the middle of the supporting body, the blocking plate 28 is arranged at the end part of the supporting body, and dust is prevented from entering the supporting body.

The supporting body 14 is provided with a roller groove 15 at the center of the top, and two ends of the roller groove 15 are provided with concave grooves 16. The rollers 17 are rotatably mounted at both ends of the roller shaft 18, both ends of the roller shaft 18 are mounted in the concave grooves 16 at the top of the supporting body 14, and the rollers 17 are flexibly and rotatably positioned in the roller grooves 15. Two roll shafts 18 are respectively arranged at the upper end and the lower end of the supporting body 14, the two roll shafts 18 are respectively arranged at the front end and the rear end of the upper end or the lower end of the supporting body 14, 4 roll shafts are arranged together, two ends of each roll shaft 18 are respectively provided with a roller 17, two rollers 17 at two ends of each roll shaft 18 are positioned at two sides of the guide rail 13, and the sliding block 12 can slide along the guide rail 13 through the cooperation of the two rollers 17.

The servo motor 10 is connected with the driving screw rod 11 through a speed reducer and a coupling, the driving screw rod 11 is driven to rotate through the servo motor 10, and the steering, the rotating speed, the rotating number of turns and the like of the servo motor 10 can be controlled through the control module. The sliding block 12 drives the ore separating plate 3 fixedly connected with the sliding block to move between the concentrate conveying belt 5 and the tailing conveying belt 6, so that the position of the ore separating plate 3 is adjusted.

In order to improve the determination of the control module on the position information of the ore separating plate 3, the ore separating plate 3 is provided with a positioning device, the positioning device is connected with the control module, the positioning device is a position sensor 20, the position information of the ore separating plate 3 can be transmitted to the control module in real time through the position sensor, and the real-time control module sends an ore separating plate moving signal to judge and store the position of the ore separating plate. The position sensor 20 is positioned at one end of the ore separation adjusting device opposite to the servo motor 10, the position sensor 20 judges the position of the ore separation plate 3, and the position information of the ore separation plate 3 can be used for judging the movable section range of the ore separation plate. The position information is fed back to the control module in real time, when the ore separating plate 3 needs to be adjusted, the control module sends an adjusting signal, the servo motor 10 operates to drive the driving screw rod 11 to rotate, the driving screw rod 11 only rotates to drive the positioning block 19 to move horizontally, and the positioning block 19 drags the ore separating plate 3 to move horizontally.

Because the length of the ore separating plate is large and the ore separating plate has a certain span, in order to improve the stability of the adjustment of the ore separating plate, two sets of ore separating adjusting devices are respectively arranged on two sides of the dry separator, namely, one set of servo motor and a driving screw rod structure are respectively arranged on two sides of the dry separator, the ore separating plate is synchronously driven by two sets of driving screw rod devices to realize horizontal movement, and the two sets of servo motors 10 synchronously operate under the control of the control module to realize the synchronism of the adjustment of the two sets of ore separating adjusting devices on the ore separating plate.

The position of the ore separation plate can be reasonably determined according to the difference of the throwing tracks of the ore from the separation magnetic cylinder and the difference of the iron content of the ore by adjusting the position of the ore separation plate 3, and the position moves close to the tailing end, so that the grade of the iron content of the concentrate is reduced, the grade of the iron content of the tailing is reduced, and the recovery rate of the concentrate is improved; the position of the iron-containing ore concentrate moves close to the end of the ore concentrate, the iron content grade of the ore concentrate is improved, the iron content grade of tailings is improved, the recovery rate of the ore concentrate is reduced, and the rejection rate of the tailings is improved.

In order to realize the automatic adjustment of the separated concentrate and the separated tailings, the control of the iron content of the separated concentrate or the separated tailings can be realized by adjusting the rotating speed of the separation magnetic cylinder 2 through a control module or adjusting the position of the mineral separation plate 3 between the concentrate conveyer belt 5 and the tailings conveyer belt 6.

The control module can acquire the rotating speed of the separation magnetic cylinder 2 and the position parameters of the ore separating plate 3 in real time, the rotating speed of the separation magnetic cylinder 2 can be controlled through the frequency conversion control module, the frequency conversion control module can be adjusted through the control module, the rotating speed of the separation magnetic cylinder 2 can be adjusted by changing the power supply frequency, and the rotating speed information of the separation magnetic cylinder 2 is transmitted to the control module in real time.

The rotation speeds of the separation magnetic cylinder 2 are different, the range of the magnetic ore mixed in the ore to be thrown away is different, and the ore with higher iron content is less prone to be thrown away, so that the separation and control of the concentrate and the tailings can be well realized.

Similarly, control module can control and divide ore deposit adjusting device, specifically to in this embodiment, then is the operation through control module control servo motor, through servo motor 10 control drive lead screw 11 corotation or reversal and the number of turns of rotation, can realize dividing the accurate regulation in ore deposit board 3 position, through the transform in ore deposit board 3 position, can realize the control to concentrate and tailing iron content, makes it satisfy the demand of actual production.

In order to realize the automatic adjustment of the position of the ore splitting plate 3 and the automatic adjustment of the rotating speed of the separation magnetic cylinder 2, an ore data acquisition unit 21 for detecting the iron content of ore is arranged above the concentrate conveyer belt 5 and the tailing conveyer belt 6, and the iron content of the concentrate and/or the iron content of the tailing are/is obtained through the ore data acquisition unit 21; the ore data acquisition unit 21 detects the iron content of the ore by adopting a technology based on x-ray transmission, x-ray fluorescence or electromagnetic detection, acquires the content data of iron elements in the ore and transmits the content data to the control module.

The control module is a programmable controller, the programmable controller comprises a storage unit and an analysis unit, the programmable controller is also respectively connected with the ore data acquisition unit and is used for acquiring the iron content of the concentrate and the iron content of the tailings, the storage unit stores a set value of the iron content of the concentrate or a set value of the iron content of the tailings, the analysis unit compares the actually acquired iron content of the concentrate and the iron content of the tailings with a set value of the iron content of the concentrate and a set value of the iron content of the tailings, and the programmable controller controls the rotating speed adjusting device to adjust the rotating speed of the separation magnetic cylinder according to the comparison result or controls the separation adjusting device to adjust the position of the separation device.

The control module specifically controls the iron content of the concentrate or the tailings through comparative analysis in a mode that:

1. when the difference value between the actually obtained iron content of the concentrate and the iron content of the tailings and the set value of the iron content of the concentrate or the set value of the iron content of the tailings is within the error control range, the system is judged to operate stably, and the collected data is reliable;

2. when the iron content of the actually obtained concentrate is larger than the iron content set value of the concentrate, or the iron content of the tailings is larger than the iron content set value of the tailings, the control module controls the ore separation adjusting device to drive the ore separation plate to move to a position close to the tailings conveying belt, or the control module controls the variable frequency control module to reduce the rotating speed of the separation magnetic cylinder, or the ore separation plate is close to the tailings conveying belt and the rotating speed of the separation magnetic cylinder is reduced at the same time, and finally the difference value between the actually obtained iron content of the concentrate or the iron content of the tailings and the iron content set value of the concentrate or the iron content of the tailings is within an error control range;

3. when the iron content of the actually obtained concentrate is smaller than the iron content set value of the concentrate, or the iron content of the tailings is smaller than the iron content set value of the tailings, the control module controls the ore separation adjusting device to drive the ore separation plate to move to a position close to the concentrate conveying belt, or the control module controls the variable frequency control module to increase the rotating speed of the separation magnetic cylinder, or the ore separation plate is close to the concentrate conveying belt and the rotating speed of the separation magnetic cylinder is increased at the same time, and finally the difference value between the actually obtained iron content of the concentrate or the iron content of the tailings and the iron content set value of the concentrate or the iron content of the tailings is within an error control range.

The control mode of the control module of the invention can not only adopt the comparison of the iron contents of the concentrate and the tailings for tracking and controlling, but also adopt the recovery rate of the concentrate and the yield of the concentrate for tracking and controlling.

In order to realize the acquisition of ore recovery rate data, the invention is provided with an ore feeding scale 22 on the lower surface of an ore feeding conveyer belt 1, a concentrate scale 23 on the lower surface of a concentrate conveyer belt 5, a tailing scale 24 on the lower surface of a tailing conveyer belt 6, and a control module is respectively connected with the ore feeding scale 22, the concentrate scale 23 and the tailing scale 24 and is used for obtaining ore feeding yield, concentrate yield and tailing yield, thereby calculating the concentrate yield or the tailing yield.

The storage unit of the control module further stores a concentrate calculated yield and a tailing calculated yield, the programmable controller calculates an actual concentrate yield and an actual tailing yield according to the collected ore feeding amount, the concentrate yield and the tailing yield, the analysis unit compares the actual concentrate yield and the actual tailing yield with the concentrate calculated yield and the tailing calculated yield, and the programmable controller controls the rotating speed adjusting device to adjust the rotating speed of the separation magnetic cylinder according to a comparison result or controls the ore separation adjusting device to adjust the position of the ore separation plate.

The control module specifically controls the yield of the concentrate or the tailings through comparative analysis in a mode that:

1. when the difference value between the obtained actual concentrate yield and actual tailing yield and the calculated concentrate yield and tailing yield is within the error control range, judging that the system runs stably and the collected data is reliable;

2. when the difference value between the obtained actual concentrate yield and actual tailing yield and the calculated concentrate yield and tailing yield is beyond the error control range, adjusting according to the change trend of the actual concentrate yield and the actual tailing yield relative to the former value;

3. when the actual concentrate yield is increased (namely the actual tailing yield is reduced), the control module controls the ore separation adjusting device to drive the ore separation plate to move to a position close to the concentrate conveying belt, or controls the variable frequency control module to increase the rotating speed of the separation magnetic cylinder, or enables the ore separation plate to be close to the concentrate conveying belt and simultaneously increases the rotating speed of the separation magnetic cylinder; .

4. When the actual concentrate yield is reduced (namely the actual tailing yield is increased), the control module controls the ore separation adjusting device to drive the ore separation plate to move to a position close to the tailing conveying belt, or the control module controls the variable frequency control module to reduce the rotating speed of the separation magnetic cylinder, or the ore separation plate is close to the tailing conveying belt and the rotating speed of the magnetic cylinder is reduced at the same time.

When the ore property has large fluctuation, the adjustment can not be carried out only depending on the iron content parameter, and can be carried out according to the concentrate recovery rate parameter.

The control module compares and analyzes the specific control mode through the ore concentrate recovery rate as follows:

1. adjusting the dry separator according to the difference between the obtained concentrate recovery rate and a preset recovery rate value;

2. the ore concentrate recovery rate is increased, then the control module controls the ore separation adjusting device to drive the ore separation plate to move towards the direction of the ore concentrate conveying belt, or the control module controls the variable frequency control module to increase the rotating speed of the separation magnetic cylinder, or the ore separation plate is close to the ore concentrate conveying belt and the rotating speed of the separation magnetic cylinder is increased at the same time.

3. The ore concentrate recovery rate is reduced, then the control module controls the ore separation adjusting device to drive the ore separation plate to move towards the direction of the tailing conveyer belt, or the control module controls the variable frequency control module to reduce the rotating speed of the magnetic cylinder, or the ore separation plate is close to the tailing conveyer belt and the rotating speed of the magnetic cylinder is reduced at the same time.

As mentioned in the above control process:

actual concentrate yield is concentrate weighing/raw ore weighing;

calculating the concentrate yield (raw ore iron grade-tailing iron grade)/(concentrate iron grade-tailing iron grade);

concentrate recovery-actual yield-concentrate iron grade/raw ore iron grade.

The three control modes can be set through the programmable controller of the control module, in the actual use process, the specific control mode and the priority level of the control mode can be determined according to the actual production requirement to control and adjust, the first control mode is generally preferentially adopted to realize adjustment, the mode can control the grade of the concentrate and the tailings according to the iron content of the sorted concentrate and tailings, the precision is high, and the effect is good.

When the yield of the concentrate or the tailings is required, the second control mode can be adopted to realize control, and the yield of the concentrate or the tailings can be effectively ensured to meet the production requirement.

When the properties of the raw ore are greatly changed, a third control mode can be adopted to realize control, and the recovery rate of valuable ores can be effectively ensured.

The control module can control the ore sorting by the control mode, when the ore grade (iron content of the ore) or the ore yield collected by the control module deviates from the normal production index, data comparison judgment is carried out, if the grade of the produced tailings is low, after the control module collects grade information, through analysis of an analysis unit, when the difference value between the grade information and process setting parameters or historical operation process parameters (the tailings grade, the yield and the recovery rate) exceeds an allowable value, the optimal cylinder rotating speed and the ore separating plate position parameter are formed and sent to the adjusting module, a corresponding rotating speed signal and a corresponding position signal are generated, and the rotating speed of the separating magnetic cylinder and the ore separating plate position are correspondingly increased, so that the tailing rejection rate can be increased, the tailings grade is properly increased, and the separation efficiency is kept stable. Correspondingly, if the tailings index is higher, the control module generates an operation parameter signal beneficial to reducing the tailings grade so as to reduce the rotating speed of the cylinder and adjust the position of the ore separation plate.

When the invention is used:

when the dry separation system works, ores are fed from the upper part of the separation magnetic cylinder 2 through the ore feeding conveying belt 1 by the vibrating feeder 4, because the ores contain different ore components with strong and weak magnetism, when the ores pass through a magnetic field area of the separation magnetic cylinder 2, the ores can be separated under the high-speed rotation of the separation magnetic cylinder 2, part of the ores with strong magnetism can be adsorbed on the surface of the cylinder body all the time, the ores with weak magnetism and non-magnetism can be separated from the magnetic field in different areas on the surface of the cylinder body, different throwing tracks are formed, reasonable equipment operation parameters are set in the dry separation process according to the separation process requirements, the excessive ores with weak magnetism or non-magnetism are prevented from being mixed with the ore concentrate, the grade of the ore concentrate is reduced, excessive ores with strong magnetism are prevented from being thrown into tailings, and loss is generated. The rotating speed of the separation magnetic cylinder 2 is increased, the ore removal amount can be increased, the concentrate grade is favorably improved, the rotating speed of the separation magnetic cylinder 2 is reduced, the ore removal amount can be reduced, and the ore loss is reduced.

The grade of the concentrate or the tailings can be controlled by setting the position of the ore separating plate 3, the concentrate and the tailings are separated through the ore separating plate 3 and are respectively conveyed through respective conveying belts, and when the position of the ore separating plate is close to the end of the tailings, the grade of the concentrate is reduced, the grade of the tailings is reduced, and the recovery rate of the concentrate is improved; the position of the tailing.

In actual production, the control module can collect the grade information of the concentrate and the tailings in real time and compare the grade information with the set working parameters in real time, and when the grade information of the concentrate or the tailings collected by the control module is greatly deviated from the set value parameters, the control module can take measures in time to control the rotating speed of the separation magnetic cylinder to adjust or adjust the position of the separation plate between the concentrate conveying belt and the tailings conveying belt, so that the quality of the concentrate and the tailings is recovered to the set value range in time.

The grade and yield of the tailings are taken as important parameters in the dry separation process and are taken as important reference data. When the fluctuation of the tailing value exceeds the allowable range, the dry separation operation parameters are correspondingly adjusted. The combination of the grade of the raw ore and the grade and yield change of the concentrate and the tailings can be used as a basis for judging whether the properties of the ore are changed obviously. Meanwhile, the process and equipment operation information of the control module during the stable operation period can also be used as the subsequent dry separator operation parameter adjustment reference data.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.