阅读说明：本技术 一种辉锑矿矿石的高效利用与浮选工艺 (Efficient utilization and flotation process for stibnite ore ) 是由 贺坤 彭尉 胡忠 彭迪清 于 2020-12-12 设计创作，主要内容包括：本发明提供一种辉锑矿矿石的高效利用与浮选工艺。所述辉锑矿矿石的高效利用与浮选工艺包括以下步骤：S1、将井下出窿辉锑矿原矿石(粒度-500mm)经过破碎、筛分、人工手选和机器分选等方式得到合格粉矿和不同粒级废石：S2、合格粉矿经过高压辊磨机超细碎后,再经过球磨机与旋流器组成的磨矿分级系统,得到合格矿浆；S3、将所得矿浆的调节pH,加入活化剂。本发明提供的辉锑矿矿石的高效利用与浮选工艺利用矿石和脉石矿物的物理与化学性质的差异,在流程中利用矿石的不同粒级情况,合理布置人工手选作业、智能分选作业、磨浮作业、井下充填作业、尾矿脱水作业程序,分阶段回收废石、精矿、尾矿、清水,实现矿石的高效利用。(The invention provides a process for efficiently utilizing and floating stibnite ores. The efficient utilization and flotation process of stibnite ores comprises the following steps: s1, crushing, screening, manually selecting, mechanically sorting and the like the underground protruding stibnite raw ore (granularity-500 mm) to obtain qualified fine ore and waste rocks of different size fractions: s2, carrying out superfine grinding on the qualified fine ore by a high-pressure roller mill, and then passing through an ore grinding classification system consisting of a ball mill and a cyclone to obtain qualified ore pulp; s3, adjusting the pH value of the obtained ore pulp, and adding an activating agent. The efficient utilization and flotation process of stibnite ores provided by the invention utilizes the difference of physical and chemical properties of the ores and gangue minerals, utilizes the different size grade conditions of the ores in the process, reasonably arranges the procedures of manual selection operation, intelligent separation operation, grinding and floating operation, underground filling operation and tailing dewatering operation, and recovers barren rocks, concentrate, tailings and clear water in stages to realize the efficient utilization of the ores.)

1. The efficient utilization and flotation process of stibnite ores is characterized by comprising the following steps of:

s1, crushing, screening, manually selecting, mechanically sorting and the like the underground protruding stibnite raw ore (granularity-500 mm) to obtain qualified fine ore and waste rocks of different size fractions:

s2, carrying out superfine grinding on the qualified fine ore by a high-pressure roller mill, and then passing through an ore grinding classification system consisting of a ball mill and a cyclone to obtain qualified ore pulp;

s3, adjusting the pH value of the obtained ore pulp, adding an activating agent, and then adding a composite collecting agent and a foaming agent to perform flotation operation to obtain antimony concentrate;

and S4, performing underground filling operation and dewatering operation on the flotation tailings.

2. The efficient utilization and flotation process for stibnite ores according to claim 1, wherein in step S1, the ores with the size fraction of + 70-150 mm are obtained after screening and are selected by hand; and carrying out intelligent equipment sorting on the +16 to-70 mm ores.

3. The efficient utilization and flotation process for stibnite ore according to claim 1, wherein in step S2, the pH of the ore slurry is adjusted to 5.0-6.5 and the amount of sulfuric acid is 1.0-2.5 kg/t.

4. The process for efficient utilization and flotation of stibnite ore according to claim 1 wherein in step S3, the activating agent is lead nitrate in an amount of 60-120 g/t.

5. The efficient stibnite ore utilization and flotation process according to claim 1, wherein in step S3, the mass ratio of MA-1 to butyl xanthate in the composite collector is 0.5-1.5:1, and the dosage is 180-250 g/t.

6. The process for efficient utilization and flotation of stibnite ore according to claim 1 wherein the qualified pulp contains 65% to 75% by weight of-200 mesh (less than 0.075mm) in step S2.

7. The process for efficient utilization and flotation of stibnite ore according to claim 1 wherein said down-hole filling operation is carried out in step S4 by concentrating the slurry to 55-75% concentration using a high efficiency concentrating tank, mixing the cement and then feeding the mixed cement to down-hole filling.

8. The process for efficient utilization and flotation of stibnite ore according to claim 1, wherein in step S4, said dewatering operation is to perform four-stage sedimentation on the overflow water after efficient concentration to obtain clean water and ore pulp, the clean water is returned to the system for reuse, and the ore pulp is transported to the tailing pond.

9. The process for efficient utilization and flotation of stibnite ore according to claim 1 further comprising processing equipment for crushing said underground mined stibnite raw ore, said processing equipment comprising

A processing platform;

the processing device is fixed at the top of the processing platform and comprises a high-pressure roller mill, the top of the high-pressure roller mill is fixedly connected with a blanking pipe, the top of the blanking pipe is provided with a feeding bin, and the bottom of the high-pressure roller mill is provided with a recovery bin;

the plate-type conveying belt is arranged at the top of the feeding bin;

the feeding port is arranged at the top of the feeding bin;

the buffer assembly is fixed on one side of the inner wall of the feeding bin and comprises a T-shaped sliding rod, a buffer baffle is connected onto the T-shaped sliding rod in a sliding mode, and a buffer spring is fixedly connected onto one side of the buffer baffle;

the mounting assembly is arranged at the top of the feeding bin and comprises a guide round rod, an L-shaped plate is connected to the upper portion of the guide round rod in a sliding mode, one end of the L-shaped plate is fixedly connected with a laminating base plate, and a rubber pad is fixedly connected to one side of the laminating base plate;

the fixed component is fixed on one side of the feeding bin and comprises a fixed plate, a lateral plate is fixedly connected to the top of the fixed plate, a clamping spring is fixedly connected to one side of the lateral plate, a T-shaped clamping rod is fixedly connected to one end of the clamping spring, and a pull rod is fixedly connected to one side of the T-shaped clamping rod.

10. The efficient utilization and flotation process of stibnite ores according to claim 9, wherein the high pressure roller mill is fixed to the top of the processing platform, the T-shaped slide bar is fixed to one side of the inner wall of the feeding bin, one end of the buffer spring is fixedly connected to one side of the inner wall of the feeding bin, the guiding round bar is fixed to the top of the feeding bin, the fixing plate is fixed to one side of the feeding bin, one end of the pull bar penetrates through the lateral plate and extends to the outside of the lateral plate, and one end of the T-shaped clamp bar penetrates through the L-shaped plate and extends to the outside of the L-shaped plate.

Technical Field

The invention relates to the technical field of ore dressing, in particular to a process for efficiently utilizing and floating stibnite ores.

Background

Mineral separation is a process of crushing and grinding ores according to physical and chemical properties of different minerals in the ores, separating useful minerals from gangue minerals by methods such as gravity separation, flotation and the like, separating various symbiotic (associated) useful minerals from each other as much as possible, and removing or reducing harmful impurities to obtain raw materials required by smelting or other industries.

The manual separation is a mineral separation method which uses manual separation according to the difference of color, luster and the like of different minerals.

The intelligent sorting is to identify materials according to the difference of attenuation capacities after rays penetrate through minerals and gangue, simulate human vision and brain by combining a high-performance calculation and big data technology, and perform rapid and accurate qualitative and quantitative analysis and effective sorting on ores through different spectral imaging.

The tailing filling is that the tailing generated by a concentrating mill is concentrated by a high-efficiency concentrator, then is stirred with other additives and then is conveyed to the underground for filling.

The tailing dewatering refers to the process that the tailing output by the mineral separation process is subjected to multi-stage concentration to generate clear water which is returned to be utilized.

In the mineral separation and flotation, different reagents are adopted to adjust the physical and chemical properties of the surfaces of selected mineral particles, so that the selected mineral particles can be better separated in a flotation medium, the recovery rate of active ingredients can be improved, water is usually adopted as the flotation medium, and the common flotation agent comprises a collecting agent, a foaming agent and a regulator.

In the process of carrying out flotation on metal minerals by adopting water as a flotation medium, the surface of metal mineral particles is adsorbed with a collecting agent as much as possible, so that the surface of the useful metal mineral particles is hydrophobic, and finally, the useful metal mineral particles with hydrophobic surfaces are floated out by using a foaming agent.

The flotation process is generally called a beneficiation flotation reagent system which is specified for the types and the quantity of added reagents, the reagent adding points and the reagent adding modes, when ore is selected for flotation, the reagent system can have great influence on flotation indexes, the flotation reagents in the ore pulp can be added in a plurality of types and are mutually restricted with various original components in the ore pulp, if the selected reagent system is improper, the whole process is in a state of being unfavorable for mineral separation, and therefore, the selected better reagent system is an important condition for improving the beneficiation recovery rate and flotation concentrate grade.

In the prior art, only target minerals are recovered in the stibnite ore dressing process, a large amount of tailings and wastewater are generated when the stibnite ore dressing is carried out, and useful minerals in four concentrates are scavenged and insufficiently separated by monomers, so that the ores cannot be efficiently utilized.

Therefore, there is a need to provide a highly efficient utilization and flotation process for stibnite ore to solve the above problems.

Disclosure of Invention

The invention provides a process for efficiently utilizing and floating stibnite ores, which solves the problem that ores cannot be efficiently utilized because only target ores are recovered in a stibnite ore dressing process.

In order to solve the technical problems, the efficient utilization and flotation process of stibnite ores, provided by the invention, comprises the following steps:

s1, crushing, screening, manually selecting, mechanically sorting and the like the underground protruding stibnite raw ore (granularity-500 mm) to obtain qualified fine ore and waste rocks of different size fractions:

s2, carrying out superfine grinding on the qualified fine ore by a high-pressure roller mill, and then passing through an ore grinding classification system consisting of a ball mill and a cyclone to obtain qualified ore pulp;

s3, adjusting the pH value of the obtained ore pulp, adding an activating agent, and then adding a composite collecting agent and a foaming agent to perform flotation operation to obtain antimony concentrate;

and S4, performing underground filling operation and dewatering operation on the flotation tailings.

Preferably, in the step S1, after screening, the ores with the size fraction of +70mm to-150 mm are obtained respectively and are selected by hands; and carrying out intelligent equipment sorting on the +16 to-70 mm ores.

Preferably, in the step S2, the pH value of the ore pulp is adjusted to 5.0-6.5, and the dosage of the sulfuric acid is 1.0-2.5 kg/t.

Preferably, in the step S3, the activating agent is lead nitrate, and the amount of the activating agent is 60-120 g/t.

Preferably, in the step S3, the mass ratio of the MA-1 to the butyl xanthate in the composite collector is 0.5-1.5:1, and the dosage is 180-250 g/t.

Preferably, in the step S2, the qualified ore pulp has a content of-200 mesh (less than 0.075mm) of 65-75%.

Preferably, in the step S4, the down-hole filling operation uses a high-efficiency thickening tank to concentrate the slurry to 55-75%, and the slurry is mixed with cement and then delivered to the down-hole filling.

Preferably, in the step S4, the dewatering operation is to perform four-stage sedimentation on the overflow water after the efficient concentration to obtain clean water and ore pulp, the clean water is returned to the system for reuse, and the ore pulp is conveyed to a tailing pond.

Preferably, the processing equipment is used for crushing the underground protruding stibnite raw ore and comprises a processing platform; the processing device is fixed at the top of the processing platform and comprises a high-pressure roller mill, the top of the high-pressure roller mill is fixedly connected with a blanking pipe, the top of the blanking pipe is provided with a feeding bin, and the bottom of the high-pressure roller mill is provided with a recovery bin; the plate-type conveying belt is arranged at the top of the feeding bin; the feeding port is arranged at the top of the feeding bin; the buffer assembly is fixed on one side of the inner wall of the feeding bin and comprises a T-shaped sliding rod, a buffer baffle is connected onto the T-shaped sliding rod in a sliding mode, and a buffer spring is fixedly connected onto one side of the buffer baffle; the mounting assembly is arranged at the top of the feeding bin and comprises a guide round rod, an L-shaped plate is connected to the upper portion of the guide round rod in a sliding mode, one end of the L-shaped plate is fixedly connected with a laminating base plate, and a rubber pad is fixedly connected to one side of the laminating base plate; the fixed component is fixed on one side of the feeding bin and comprises a fixed plate, a lateral plate is fixedly connected to the top of the fixed plate, a clamping spring is fixedly connected to one side of the lateral plate, a T-shaped clamping rod is fixedly connected to one end of the clamping spring, and a pull rod is fixedly connected to one side of the T-shaped clamping rod.

Preferably, the high-pressure roller mill is fixed in the top of processing platform, the T type slide bar is fixed in throw one side of feed bin inner wall, buffer spring's one end with throw one side fixed connection of feed bin inner wall, the direction round bar is fixed in throw the top of feed bin, the fixed plate is fixed in throw one side of feed bin, the one end of pull rod runs through the side direction board just extends to the outside of side direction board, the one end of T type kelly runs through the L template just extends to the outside of L template.

Compared with the related technology, the efficient utilization and flotation process of the stibnite ore provided by the invention has the following beneficial effects:

the invention provides a process for efficiently utilizing and floating stibnite ores, which aims at the defect that only a target mineral (stibnite) is recovered in the conventional stibnite ore dressing process to generate a large amount of tailings and waste water.

Drawings

FIG. 1 is a process flow diagram of a first embodiment of a process for the efficient utilization and flotation of stibnite ores in accordance with the present invention;

FIG. 2 is a flow diagram of a portion of the production system of FIG. 1;

fig. 3 is a flow diagram of the tailings downhole filling system of fig. 1;

FIG. 4 is a flow diagram of a portion of the tailings dewatering system shown in FIG. 1;

FIG. 5 is a schematic structural diagram of a second embodiment of the efficient utilization and flotation process for stibnite ore according to the present invention;

FIG. 6 is a schematic structural view of the batch bin portion shown in FIG. 5;

fig. 7 is an enlarged view of a point a shown in fig. 6.

Reference numbers in the figures: 1. processing platform, 2, processing device, 21, high-pressure roller mill, 22, blanking pipe, 23, feeding bin, 24, recovery bin, 3, plate conveyor belt, 4, feeding port, 5, buffer assembly, 51, T-shaped slide bar, 52, buffer baffle, 53, buffer spring, 6, mounting assembly, 61, guide round bar, 62, L-shaped plate, 63, joint substrate, 64, rubber pad, 7, fixing assembly, 71, fixing plate, 72, lateral plate, 73, clamping spring, 74, T-shaped clamping bar, 75 and pull rod.

Detailed Description

The invention is further described with reference to the following figures and embodiments.

First embodiment

Referring to fig. 1, fig. 2, fig. 3 and fig. 4, fig. 1 is a process flow diagram of a first embodiment of a flotation process for efficient utilization of stibnite ore according to the present invention; FIG. 2 is a flow diagram of a portion of the production system of FIG. 1; fig. 3 is a flow diagram of the tailings downhole filling system of fig. 1; fig. 4 is a flow diagram of a portion of the tailings dewatering system shown in fig. 1. The efficient utilization and flotation process of stibnite ores comprises the following steps:

s1, crushing, screening, manually selecting, mechanically sorting and the like the underground protruding stibnite raw ore (granularity-500 mm) to obtain qualified fine ore and waste rocks of different size fractions:

s2, carrying out superfine grinding on the qualified fine ore by a high-pressure roller mill, and then passing through an ore grinding classification system consisting of a ball mill and a cyclone to obtain qualified ore pulp;

s3, adjusting the pH value of the obtained ore pulp, adding an activating agent, and then adding a composite collecting agent and a foaming agent to perform flotation operation to obtain antimony concentrate;

and S4, performing underground filling operation and dewatering operation on the flotation tailings.

Dispersing crude stibnite ore in water by ball milling to obtain slurry, adjusting the pH of the slurry to 5.0-6.5, adding a composite collecting agent for flotation and collection to obtain stibium concentrate, wherein the composite collecting agent is formed by mixing MA-1 and butyl xanthate according to the mass ratio of 0.5-1.5-1.

In the step S1, after screening, the ores with the size fraction of +70 to-150 mm are respectively obtained and hand-selected; and carrying out intelligent equipment sorting on the +16 to-70 mm ores.

In the step S2, the pH value of the ore pulp is adjusted to 5.0-6.5, and the dosage of sulfuric acid is 1.0-2.5 kg/t.

In the step S3, the activating agent is lead nitrate, and the dosage is 60-120 g/t.

In the step S3, the mass ratio of MA-1 to butyl xanthate in the composite collector is 0.5-1.5:1, and the dosage is 180-250 g/t.

In the step S2, the qualified ore pulp has a content of-200 meshes (less than 0.075mm) of 65-75%.

In the step S4, the slurry is concentrated to 55-75% concentration by using a high-efficiency concentrating barrel, and the slurry is mixed with cement and then conveyed to the downhole for filling.

In the step S4, the dewatering operation is to obtain clean water and ore pulp from the overflow water after the high-efficiency concentration through four-stage sedimentation, the clean water is returned to the system for reuse, and the ore pulp is conveyed to the tailing pond.

The efficient utilization of stibnite ore and the working principle of the flotation process provided by the invention are as follows:

the process comprises the steps of crushing, screening, manually selecting, mechanically sorting and the like the underground emerging stibnite ore to obtain qualified fine ore and waste stone; after the qualified fine ore is subjected to superfine grinding by a single-transmission high-pressure roller mill, the qualified fine ore passes through an ore grinding classification system consisting of a ball mill and a swirler to obtain qualified ore pulp with the content of-200 meshes of 65-75 percent; stirring the qualified ore pulp, adding sulfuric acid, lead nitrate, a composite collecting agent and a foaming agent, and allowing the qualified ore pulp to enter a flotation machine for bubble flotation to obtain flotation concentrate and tailings; concentrating tailings to obtain high-concentration ore pulp and low-concentration ore pulp, mixing the high-concentration ore pulp with other additives, and filling underground; and (4) performing four-stage sedimentation on the low-concentration ore pulp to obtain clear water, returning the clear water to a system for utilization, and conveying the settled ore pulp to a tailing pond for storage.

The process fully utilizes the property difference between useful minerals and gangue in the ore, and utilizes various medicaments to separate stibnite flotation concentrate with high grade and low impurity, thereby reducing the smelting cost; meanwhile, gangue minerals with different size fractions produced by a concentrating mill are fully utilized: manually selecting the waste rocks (the size fraction is from +70mm to-150 mm) and intelligently sorting the waste rocks (the size fraction is from +16mm to-70 mm) by hands, and respectively charging for sale; flotation tailings are concentrated and then return to the underground for filling, the underground geological structure is guaranteed to be stable, the concentrated overflow water is settled by four stages, the obtained clear water returns to a system for utilization, the water resource consumption is reduced, the resource utilization maximization is achieved by the whole process, and the environmental impact minimization is achieved.

Compared with the related technology, the efficient utilization and flotation process of the stibnite ore provided by the invention has the following beneficial effects:

aiming at the defect that only a target mineral (stibnite) is recovered in the existing stibnite ore dressing process to generate a large amount of tailings and waste water, the method makes full use of the difference between the physical and chemical properties of the ore and the gangue mineral, utilizes the different size grades of the ore in the process, reasonably arranges the procedures of manual separation operation, intelligent separation operation, grinding and floating operation, underground filling operation and tailing dewatering operation, recovers the waste stone, concentrate, tailings and clear water in stages, realizes the high-efficiency utilization of the ore, and generally adopts the process of sequentially returning middlings.

Second embodiment

Referring to fig. 5, 6 and 7, a second embodiment of the present application proposes another efficient utilization and flotation process for stibnite ore based on the efficient utilization and flotation process for stibnite ore provided by the first embodiment of the present application. The second embodiment is only the preferred mode of the first embodiment, and the implementation of the second embodiment does not affect the implementation of the first embodiment alone.

Specifically, the difference between the efficient utilization of stibnite ore and the flotation process provided by the second embodiment of the present application is that the efficient utilization of stibnite ore and the flotation process further include a processing device for crushing underground protruding stibnite raw ore, and the processing device includes a processing platform 1; the processing device 2 is fixed at the top of the processing platform 1, the processing device 2 comprises a high-pressure roller mill 21, a blanking pipe 22 is fixedly connected to the top of the high-pressure roller mill 21, a feeding bin 23 is arranged at the top of the blanking pipe 22, and a recovery bin 24 is arranged at the bottom of the high-pressure roller mill 21; the plate-type conveyor belt 3 is arranged at the top of the feeding bin 23; the feeding port 4 is arranged at the top of the feeding bin 23; the buffer assembly 5 is fixed on one side of the inner wall of the charging bin 23, the buffer assembly 5 comprises a T-shaped sliding rod 51, a buffer baffle 52 is connected onto the T-shaped sliding rod 51 in a sliding manner, and a buffer spring 53 is fixedly connected onto one side of the buffer baffle 52; the mounting assembly 6 is arranged at the top of the feeding bin 23, the mounting assembly 6 comprises a guide round rod 61, an L-shaped plate 62 is connected to the upper portion of the guide round rod 61 in a sliding mode, one end of the L-shaped plate 62 is fixedly connected with a bonding substrate 63, and a rubber pad 64 is fixedly connected to one side of the bonding substrate 63; fixed subassembly 7, fixed subassembly 7 is fixed in one side of feed bin 23, fixed subassembly 7 includes fixed plate 71, the top fixedly connected with side direction board 72 of fixed plate 71, one side fixedly connected with chucking spring 73 of side direction board 72, the one end fixedly connected with T type kelly 74 of chucking spring 73, one side fixedly connected with pull rod 75 of T type kelly 74.

Can carry the ore through plate conveyor 3 for the ore drops into the inside of throwing feed bin 23 through dog-house 4 and finally falls into high-pressure roller mill 21 inside and smashes, retrieves storehouse 24 and is located the below of high-pressure roller mill 21 discharge gate, and the ore after high-pressure roller mill 21 smashes finally can fall into the inside of retrieving storehouse 24.

High pressure roller mill 21 is fixed in the top of processing platform 1, T type slide bar 51 is fixed in one side of throwing feed bin 23 inner wall, buffer spring 53 one end with one side fixed connection of throwing feed bin 23 inner wall, direction round bar 61 is fixed in the top of throwing feed bin 23, fixed plate 71 is fixed in one side of throwing feed bin 23, the one end of pull rod 75 runs through side direction board 72 and extend to the outside of side direction board 72, the one end of T type kelly 74 is run through L template 62 and extend to the outside of L template 62.

The T-shaped sliding rod 51 penetrates through the attaching base plate 63 to ensure that the attaching base plate 63 can only move horizontally, the rubber pad 64 is made of waste tires, the waste materials are recycled, the environment is protected, the manufacturing cost is low, and the use is convenient.

The efficient utilization of stibnite ore and the working principle of the flotation process provided by the invention are as follows:

when ore falls into the feeding bin 23 from the plate conveyor belt 3 through the feeding port 4, the ore directly impacts the rubber pad 64 and plays an elastic protection role through the rubber pad 64, so that the ore slides along the surface of the rubber pad 64 to fall on the inner wall of the high-pressure roller mill 21;

during the sliding process, when the ore falls and collides with the buffer baffle 52, the buffer baffle 52 reduces the impact force applied to the buffer baffle 52 through the buffer spring 53, and if the ore is ejected from the inside of the high-pressure roller mill 21 during the crushing process, the ore is not ejected out of the charging bin 23;

when the pull rod 75 is pulled manually to the direction of keeping away from the side direction board 72, the pull rod 75 drives the T-shaped clamping rod 74 to break away from the L-shaped board 62, at the moment, the mounting assembly 6 can be pulled upwards to take out the rubber pad 64 from the inside of the feeding bin 23, the rubber pad 64 is convenient to replace, the mounting assembly 6 after the rubber pad 64 is replaced is installed on the feeding bin 23 again, the T-shaped clamping rod 74 is pushed to penetrate through the clamping spring 73 to pass through the L-shaped board 62, the mounting of the mounting assembly 6 is completed, the operation is simple, and the worn rubber pad 64 is convenient to replace.

Compared with the related technology, the efficient utilization and flotation process of the stibnite ore provided by the invention has the following beneficial effects:

throw feed bin 23 through setting up both can make things convenient for the ore to fall into the inside of high-pressure roller mill 21, but also can avoid the ore fragment to be popped out, the in-process of falling simultaneously protects throwing feed bin 23 inner wall through rubber pad 64 and buffer stop 52, avoids throwing feed bin 23 to receive the impact and produce and warp, makes the ore landing to the inside of high-pressure roller mill 21 through rubber pad 64 simultaneously, reduces the impact force of ore to high-pressure roller mill 21.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.