阅读说明：本技术 一种装料系统及其控制方法 (Charging system and control method thereof ) 是由 宫文垒 于 2019-11-20 设计创作，主要内容包括：本发明提供一种装料系统,包括：输送机构、控制模块和至少两种不同的炉料加料机构；所述炉料加料机构的出料口与所述输送机构配合；所述控制模块能够根据预设出料时序控制各种所述炉料加料机构的出料。在本方案中,控制模块能够根据预设出料时序控制各种炉料加料机构的开始出料时间点以及停止出料时间点,以便于各种炉料加料机构能够在输送机构上形成叠加落料,实现了不同种炉料的层状分布,进而可达到混匀入料的效果,有助于实现炉料布料的精准化。本发明还提供了一种应用上述装料系统的装料控制方法。(The present invention provides a charging system comprising: the device comprises a conveying mechanism, a control module and at least two different furnace charge feeding mechanisms; the discharge hole of the furnace charge feeding mechanism is matched with the conveying mechanism; the control module can control the discharging of various furnace charge feeding mechanisms according to a preset discharging time sequence. In this scheme, control module can be according to the start ejection of compact time point and the stop ejection of compact time point of predetermineeing the various furnace charge feeding mechanism of ejection of compact chronogenesis control to various furnace charge feeding mechanism can form the stack blanking on conveying mechanism, have realized the stratiform distribution of different kinds of furnace charges, and then can reach the effect of mixing pan feeding, help realizing the accurate of furnace charge cloth. The invention also provides a charging control method using the charging system.)

1. A charging system, characterized by comprising: the device comprises a conveying mechanism (A), a control module and at least two furnace charge feeding mechanisms with different types of materials;

the discharge hole of the furnace charge feeding mechanism is matched with the conveying mechanism (A); the control module can control the discharging of various furnace charge feeding mechanisms according to a preset discharging time sequence.

2. The charging system according to claim 1, characterized in that said at least two different charge material charging mechanisms comprise at least: a first burden charging mechanism (B1) and a second burden charging mechanism (B2);

the first type of charge material charging mechanism (B1) is located upstream of the second type of charge material charging mechanism (B2) in the conveying direction of the conveying mechanism (A).

3. The charging system according to claim 2, characterized in that said first charge feeding means (B1) are in plurality, a plurality of said first charge feeding means (B1) being distributed in sequence along the conveying direction of said conveying means (a) or in parallel along a direction perpendicular to the conveying direction of said conveying means (a);

the number of the second type of furnace burden charging mechanisms (B2) is multiple, and the second type of furnace burden charging mechanisms (B2) are sequentially distributed along the conveying direction of the conveying mechanism (A) or are distributed in parallel along the conveying direction vertical to the conveying mechanism (A).

4. The charging system according to claim 2, characterized in that said first charge feeding means (B1) is a sinter bin and said second charge feeding means (B2) is a pellet bin, the number of said sinter bins being greater than or equal to the number of said pellet bins.

5. The charging system according to claim 1, characterized in that said charge feeding mechanism comprises: the furnace charge ore bin is provided with a furnace charge vibrating screen;

the control module can control the operation of the furnace charge vibrating screen according to the preset discharging time sequence.

6. The charging system according to claim 1, wherein said control module is further capable of controlling the discharge of said various charge feeding mechanisms according to a preset discharge duration.

7. The charging system according to claim 1, characterized in that said conveying mechanism comprises: a belt assembly.

8. A charging control method using the charging system according to any one of claims 1 to 7, comprising:

controlling a first furnace charge feeding mechanism to feed materials to the conveying mechanism according to a preset discharging time sequence;

and controlling a second furnace charge feeding mechanism to feed materials to the conveying mechanism according to the preset discharging time sequence.

9. The charging control method according to claim 8, characterized in that said preset discharging sequence comprises at least: the method comprises the steps of setting a first preset time point, a second preset time point and a third preset time point from front to back;

the step of controlling the first furnace charge feeding mechanism to feed materials to the conveying mechanism according to a preset discharging time sequence comprises the following steps:

controlling the first furnace charge feeding mechanism to start feeding to the conveying mechanism at the first preset time point;

the step of controlling a second furnace charge feeding mechanism to feed materials to the conveying mechanism according to the preset discharging time sequence comprises the following steps:

and controlling the second type of furnace burden feeding mechanism to start feeding to the conveying mechanism at the second preset time point, and controlling the second type of furnace burden feeding mechanism to stop feeding to the conveying mechanism at the third preset time point.

10. The charge control method according to claim 8, characterized in that said preset discharge timing further comprises: setting a fourth preset time point and a fifth preset time point after the third preset time point, wherein the fifth preset time point is after the fourth preset time point;

the step of controlling the second furnace charge feeding mechanism to feed materials to the conveying mechanism according to the preset discharging time sequence further comprises the following steps:

and controlling the second type of furnace burden feeding mechanism to start feeding to the conveying mechanism at the fourth preset time point, and controlling the second type of furnace burden feeding mechanism to stop feeding to the conveying mechanism at the fifth preset time point.

Technical Field

The invention relates to the technical field of blast furnace smelting, in particular to a charging system and a control method thereof.

Background

Modern blast furnaces generally adopt belt feeding, and after furnace materials reach a furnace top charging bucket, the furnace materials are distributed in different radial gears by changing the control angle of a rotary chute.

With the progress of smelting technology, the requirement on the precision of material distribution is higher and higher. Firstly, higher requirements are provided for the uniformity of furnace burden before distributing; secondly, only the furnace burden types meeting special requirements can be arranged due to the special requirements of a certain distributing gear.

Disclosure of Invention

In view of this, the invention provides a charging system, which can realize the overlapping charging of different furnace charges, thereby achieving the effect of uniformly mixing the charging.

In order to achieve the above purpose, the present invention provides the following technical solutions:

a charging system, comprising: the device comprises a conveying mechanism, a control module and at least two furnace charge feeding mechanisms with different types of materials;

the discharge hole of the furnace charge feeding mechanism is matched with the conveying mechanism; the control module can control the discharging of various furnace charge feeding mechanisms according to a preset discharging time sequence.

Preferably, at least two different charging mechanisms at least comprise: the device comprises a first furnace charge feeding mechanism and a second furnace charge feeding mechanism;

the first type of charge feeding mechanism is positioned at the upstream of the second type of charge feeding mechanism along the conveying direction of the conveying mechanism.

Preferably, the charge feeding mechanism comprises: the furnace charge ore bin is provided with a furnace charge vibrating screen;

the control module can control the operation of the furnace charge vibrating screen according to the preset discharging time sequence.

Preferably, the number of the first furnace burden charging mechanisms is multiple, and the multiple first furnace burden charging mechanisms are sequentially distributed along the conveying direction of the conveying mechanism or distributed in parallel along the conveying direction perpendicular to the conveying mechanism;

the number of the second furnace charge feeding mechanisms is multiple, and the second furnace charge feeding mechanisms are sequentially distributed along the conveying direction of the conveying mechanism or distributed in parallel along the conveying direction vertical to the conveying mechanism.

Preferably, the first type of charge feeding mechanism is a sintering ore bin, the second type of charge feeding mechanism is a pellet ore bin, and the number of the sintering ore bins is greater than or equal to that of the pellet ore bins.

Preferably, the control module can also control the discharging of various furnace burden charging mechanisms according to a preset discharging time length.

Preferably, the conveying mechanism includes: a belt assembly.

A charging control method employing the charging system as described above, comprising:

controlling a first furnace charge feeding mechanism to feed materials to the conveying mechanism according to a preset discharging time sequence;

and controlling a second furnace charge feeding mechanism to feed materials to the conveying mechanism according to the preset discharging time sequence.

Preferably, the preset discharging time sequence at least comprises: the method comprises the steps of setting a first preset time point, a second preset time point and a third preset time point from front to back;

the step of controlling the first furnace charge feeding mechanism to feed materials to the conveying mechanism according to a preset discharging time sequence comprises the following steps:

controlling the first furnace charge feeding mechanism to start feeding to the conveying mechanism at the first preset time point;

the step of controlling a second furnace charge feeding mechanism to feed materials to the conveying mechanism according to the preset discharging time sequence comprises the following steps:

and controlling the second type of furnace burden feeding mechanism to start feeding to the conveying mechanism at the second preset time point, and controlling the second type of furnace burden feeding mechanism to stop feeding to the conveying mechanism at the third preset time point.

Preferably, the preset discharging time sequence further comprises: setting a fourth preset time point and a fifth preset time point after the third preset time point, wherein the fifth preset time point is after the fourth preset time point;

the step of controlling the second furnace charge feeding mechanism to feed materials to the conveying mechanism according to the preset discharging time sequence further comprises the following steps:

and controlling the second type of furnace burden feeding mechanism to start feeding to the conveying mechanism at the fourth preset time point, and controlling the second type of furnace burden feeding mechanism to stop feeding to the conveying mechanism at the fifth preset time point.

According to the technical scheme, the control module can control the discharging starting time point and the discharging stopping time point of various furnace charge feeding mechanisms according to the preset discharging time sequence, so that the various furnace charge feeding mechanisms can form overlapped blanking on the conveying mechanism, layered distribution of different types of furnace charges is realized, the effect of uniformly mixing and feeding materials can be achieved, and the accuracy of furnace charge distribution is facilitated.

The invention also provides a charging control method using the charging system, and the charging control method has corresponding beneficial effects due to the adoption of the technical scheme, and specific reference can be made to the previous description, so that the detailed description is omitted.

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, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is an initial schematic view of a charging system provided by an embodiment of the present invention;

fig. 2 is a schematic blanking diagram of a first charge feeding mechanism according to an embodiment of the present invention;

fig. 3 is a blanking schematic view of a second charge feeding mechanism provided in an embodiment of the present invention;

FIG. 4 is a schematic illustration of superimposed feeding of a charging system provided in accordance with an embodiment of the present invention;

FIG. 5 is a schematic flow chart of a charging control method provided by an embodiment of the present invention;

fig. 6 is a schematic diagram illustrating control of the stacking length of the sintered ore and the pellet according to an embodiment of the present invention.

Wherein, A is a conveying mechanism, B1 is a first furnace charge feeding mechanism, and B2 is a second furnace charge feeding mechanism.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.

The charging system provided by the embodiment of the invention is shown in fig. 1 and comprises: the device comprises a conveying mechanism A, a control module and at least two furnace charge feeding mechanisms with different types of materials;

a discharge port of the furnace charge feeding mechanism is matched with the conveying mechanism A; the control module can control the discharging of various furnace charge feeding mechanisms according to a preset discharging time sequence. It should be noted that the preset discharging time sequence includes a preset discharging starting time point and a preset discharging stopping time point, and each furnace charge feeding mechanism has a corresponding preset discharging time sequence.

According to the technical scheme, in the charging system provided by the embodiment of the invention, the control module can control the discharging starting time point and the discharging stopping time point of various furnace material charging mechanisms according to the preset discharging time sequence, so that various furnace material charging mechanisms can form overlapped blanking on the conveying mechanism, layered distribution of different furnace materials is realized, the effect of uniformly mixing and charging materials can be achieved, and the accuracy of furnace material distribution is facilitated.

Specifically, as shown in fig. 1, at least two different charging mechanisms at least include: a first furnace burden charging mechanism B1 and a second furnace burden charging mechanism B2;

the first charge material charging mechanism B1 is located upstream of the second charge material charging mechanism B2 in the conveying direction of the conveying mechanism a. Specifically, when the conveying mechanism a starts to start, the control module can control the first furnace charge feeding mechanism B1 to start feeding to the conveying mechanism a, when the first furnace charge runs to the second furnace charge feeding mechanism B2 along with the conveying mechanism a, the control module can control the second furnace charge feeding mechanism B2 to start feeding to the conveying mechanism a covered with the first furnace charge, so that the second furnace charge is superposed on the first furnace charge, and then the layered distribution of the two furnace charges on the conveying mechanism a is realized, thereby achieving the effect of uniformly mixing the two furnace charges for feeding. Furthermore, the scheme is not limited to the overlapping feeding of two furnace charges. Of course, the superposition and uniform mixing feeding of various furnace charges can be realized by additionally arranging various furnace charge feeding mechanisms.

In this scheme, first kind of furnace charge mechanism B1 includes: the first furnace charge ore bin is provided with a first furnace charge vibrating screen;

the second charge feeding mechanism B2 includes: the second furnace material ore bin is provided with a second furnace material vibrating screen;

the control module can control the operation of the first furnace charge vibrating screen or the second furnace charge vibrating screen according to a preset discharging time sequence. Specifically, after the conveying mechanism A is started, the control module controls the first furnace charge vibrating screen to be started firstly, the first furnace charge is discharged to the conveying mechanism A, when the first furnace charge moves to the position below the second furnace charge ore bin along with the conveying mechanism A, the control module starts the second furnace charge vibrating screen subsequently, the second furnace charge is discharged to the conveying mechanism A, the second furnace charge is overlapped on the first furnace charge, continuous overlapping distribution of the two furnace charges can be achieved along with the operation of the conveying mechanism A, and finally the two furnace charges achieve the effect of uniformly mixing and feeding.

Specifically, as shown in fig. 1, the number of the first type of burden charging mechanisms B1 is plural, and a plurality of the first type of burden charging mechanisms B1 are sequentially distributed along the conveying direction of the conveying mechanism a or are distributed in parallel along the conveying direction perpendicular to the conveying direction of the conveying mechanism a, so as to increase the transverse or longitudinal blanking thickness of the first type of burden on the conveying mechanism a;

the quantity of the second furnace burden charging mechanisms B2 is multiple, and the second furnace burden charging mechanisms B2 are sequentially distributed along the conveying direction of the conveying mechanism A or distributed in parallel along the conveying direction perpendicular to the conveying mechanism A, so that the effect of increasing the transverse or longitudinal blanking thickness of the second furnace burden on the conveying mechanism A is achieved, the overlapping thickness of the first furnace burden and the second furnace burden can be increased, and the capacity of uniformly mixing and distributing the furnace burden is improved.

In order to further optimize the technical scheme, the first furnace charge feeding mechanism B1 is a sintering ore bin, the second furnace charge feeding mechanism B2 is a pellet ore bin, and the number of the sintering ore bins is greater than or equal to that of the pellet ore bins, so that the sintering ore occupying the main part is added into the first furnace charge feeding mechanism, the sintering ore is used as a basic furnace charge for stacked blanking, and uniform mixing and feeding of the sintering ore serving as a main component are ensured.

In this scheme, control module can also be according to predetermineeing the ejection of compact of the various furnace charge feeding mechanism of length control during the ejection of compact to in the relative stack length of control multiple furnace charge, help multiple furnace charge to form discontinuous stack, and then make certain furnace charge form the stack dead zone in certain district section, this certain district section is corresponding to certain gear that need not this certain furnace charge of cloth in addition, thereby realized the control to the cloth material kind of certain gear.

Preferably, as shown in fig. 1, the conveying mechanism includes: the belt assembly is convenient for realizing the stable conveying of various furnace charges after blanking and superposition, and has the characteristics of simple structure, low production cost, adjustable conveying capacity and the like.

An embodiment of the present invention further provides a charging control method, as shown in fig. 5, applying the charging system described above, including:

s1, controlling the first furnace charge feeding mechanism to feed materials to the conveying mechanism according to a preset discharging time sequence; it should be noted that each charging mechanism has a corresponding preset discharging time sequence. In the step, the first furnace charge feeding mechanism is controlled to feed materials to the conveying mechanism according to a first preset discharging time sequence; of course, the scheme is not limited to be only suitable for the two furnace charge feeding mechanisms, and can also be suitable for more furnace charge feeding mechanisms;

and S2, controlling the second furnace charge feeding mechanism to feed materials to the conveying mechanism according to a preset discharging time sequence. It should be noted that, correspondingly, the second furnace charge feeding mechanism is controlled to feed materials to the conveying mechanism according to a second preset discharging time sequence. Based on the second preset discharging time sequence, the second furnace burden can form a superposition blanking or a superposition empty area on the first furnace burden, and then the uniform mixing feeding of the two furnace burdens or the control of a certain distribution gear on the material type can be realized.

As can be seen from the foregoing technical solutions, the charging control method provided in the embodiment of the present invention has corresponding beneficial effects due to the adoption of the foregoing technical solutions, and specific reference may be made to the foregoing description, which is not repeated herein.

In this scheme, predetermine ejection of compact chronogenesis and include at least: the method comprises the steps of setting a first preset time point, a second preset time point and a third preset time point from front to back;

the S1 includes:

controlling a first furnace charge feeding mechanism to start feeding to a conveying mechanism at a first preset time point (a first preset discharging starting time point);

the S2 includes:

controlling a second furnace charge feeding mechanism to start feeding to the conveying mechanism at a second preset time point; that is, from the second preset time point (the second preset discharging starting time point), the superposition of the second type of furnace burden on the first type of furnace burden can be realized, that is, in the time period of the first preset time point and the second preset time point, the second type of furnace burden and the first type of furnace burden form a first superposed empty area in the first conveying section, and the first conveying section corresponds to the innermost material distribution gear without the second type of furnace burden, so as to avoid introducing the second type of furnace burden into the innermost material distribution gear;

controlling the second furnace charge feeding mechanism to stop feeding the conveying mechanism at a third preset time point (a second preset discharging stopping time point); in the time period of the second preset time point and the third preset time point, the second furnace burden and the first furnace burden form overlapped blanking in the conveying middle section, and similarly, the conveying middle section corresponds to a middle material distribution gear needing the second furnace burden;

of course, a first preset discharging stopping time point (the first preset discharging stopping time point is after a third preset time point) can be set for the first furnace material, so as to control the first furnace material feeding mechanism to stop feeding the conveying mechanism at the first preset discharging stopping time point, that is, in the time period between the third preset time point and the first preset discharging stopping time point, the second furnace material and the first furnace material form a second dead zone in the conveying tail section, and the conveying tail section corresponds to the outermost side material distribution gear without the second furnace material, so as to avoid introducing the second furnace material into the outermost side material distribution gear. Based on the design, the introduction control of the material distribution gear on the second type of furnace burden is realized, and the accuracy of the material distribution of the second type of furnace burden is facilitated.

The embodiment of the invention also provides a charging control method, wherein the presetting of the discharging time sequence further comprises the following steps: a fourth preset time point and a fifth preset time point which are arranged after the third preset time point, wherein the fifth preset time point is after the fourth preset time point (the fifth preset time point is before the first preset discharging stopping time point);

the step of controlling the second furnace charge feeding mechanism to feed materials to the conveying mechanism according to the preset discharging time sequence further comprises the following steps:

and controlling the second furnace charge feeding mechanism to start feeding to the conveying mechanism at a fourth preset time point, and controlling the second furnace charge feeding mechanism to stop feeding to the conveying mechanism at a fifth preset time point. Namely, the second overlapping blanking of the second furnace burden and the first furnace burden can be realized, so that the distribution requirement of another middle distribution gear on the second furnace burden is met.

The present solution is further described below with reference to specific embodiments:

the invention is applied to the field of blast furnace smelting. The blanking time sequence and the blanking time of each material type ore bin are controlled on the main belt, so that two or more than two ore types are distributed on the belt in a layered mode, the furnace burden of the blast furnace can be uniformly mixed after entering the furnace, and the ore types are accurately distributed on a certain gear according to the set requirement.

Blast furnace burden generally comprises sintered ore, pellet ore, raw ore and the like, wherein the sintered ore accounts for the main part. The furnace burden superposition means that the ore materials such as pellet ore, green ore and the like are superposed on the sinter ore and are uniformly distributed in a layered manner on the belt by controlling the starting time sequence and the starting time length of the vibrating sieves of different material types. And naturally mixing the materials after entering a charging bucket. The following description will be made in detail by taking sintered ore as the first charge, pellet ore as the second charge, and raw ore as the third charge:

the vibrating screen of the sintering ore bin is started firstly, blanking is started along with the running of the belt, and when the belt runs to the lower part of the pellet ore bin, the pellet vibrating screen is started, and pellets fall on the top of the sintering ore and are continuously distributed along with the belt. By controlling the vibration sieve amplitude of each bin, the blanking process is continuous and the state that the pellet is always covered on the sinter is kept. The control mode of other ore species such as raw ore is the same. If the sintering ore bin is arranged behind the pellet ore bin, the pellets are arranged below the sintering ore bin instead, and the sintering ore is covered above the sintering ore bin. The above process is specifically as follows:

1. as shown in fig. 1, when the belt is just started, the sintered ore bin starts to be fed;

2. as shown in fig. 2, when the sinter is transported to the lower part of the pellet ore bin along with the belt, the pellet ore bin starts to discharge;

3. as shown in fig. 3, the pellets are always covered above the sintered ore and transported with the belt;

4. as shown in figure 4, two kinds of ores are fed into the charging bucket at the same time to achieve a uniform mixing state.

On the basis of overlapped feeding, the control of the material distribution types at different gears can be further realized. Multiple furnace charges need to be distributed in multiple rings after being fed, and the process of distributing in multiple rings is to lead the furnace charges in the charging bucket to sequentially pass from the outer side to the center through a chute. The material distribution type of a certain gear can be controlled as long as the overlapping length of furnace materials is set.

The following further describes the material distribution types related to the control gear by taking sintered ore and pellet as examples:

table 1 shows the distribution matrix of the bucket. The furnace burden is sintered ore and pellet ore, and has six gears and 13 circles of material distribution. Wherein the first gear and the sixth gear are required to have no pellet ore.

Wherein, the outermost 3 circles account for 3 ÷ 13 ÷ 23.1% of the total number of circles; 2 circles in the innermost gear, and 15.4% of 2 ÷ 13 of the total number of circles. The weight ratio is converted into the length ratio, and the starting time and the duration time (blanking stopping time) of the blanking of the pellet ore bin are controlled to respectively form overlapped empty areas (as shown in figure 6) with the total lengths of 23.1 percent and 15.4 percent before and after the pellets, so that the effect of selective material distribution can be achieved.

TABLE 1

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.