Copper removal method for crude antimony alloy

Abstract

The invention belongs to the technical field of crude antimony alloys, and particularly relates to a copper removal method for crude antimony alloys, a first crushing plate is fixedly mounted at the bottom of a crushing cavity, a supporting plate is fixedly connected to the bottom of the crushing cavity, and a second crushing plate is slidably mounted at the bottom of the supporting plate; a plurality of conical blocks are installed on the opposite faces of the first crushing plate and the second crushing plate, the conical blocks are arranged on the surfaces of the first crushing plate and the second crushing plate in a linear array mode, a filter disc is installed at the position, located below the crushing cavity, of the bottom of the crushing base, and a plurality of screen grooves are formed in the surface of the filter disc. The second crushing plate extrudes the coarse antimony ore between the second crushing plate and the first crushing plate, the coarse antimony ore can be ground into the size of a screen groove under the action of a conical block, then the coarse antimony ore can fall into a smelting furnace through the screen groove, the coarse antimony ore is crushed, the surface area of the coarse antimony ore is increased, the subsequent chemical reaction can be more sufficient and effective, and separation of copper metal and antimony in coarse antimony is facilitated.

Description

Technical Field

[0001] The invention belongs to the technical field of crude antimony alloys, in particular to a method for removing copper from crude antimony alloys. Background Art

[0002] Crude antimony alloy is an alloy with a high antimony content, usually obtained by preliminary smelting of antimony ore. It contains antimony and other associated elements, such as lead, copper, iron, etc. The production process of crude antimony alloy includes multiple steps such as crushing, grinding, leaching, smelting, etc., and copper needs to be removed during the production process.

[0003] Fire refining is a traditional copper removal method. It usually involves mixing crude antimony with a specific copper removal agent and treating it at a certain temperature to achieve copper removal. For example, a study explored the use of pyrite as a copper removal agent in fire refining of crude antimony. Electrolytic refining for copper removal: Electrolytic refining is another effective copper removal method. It uses crude antimony as an anode in an electrolytic cell to separate copper from antimony through electrolysis. During the electrolytic refining process, copper dissolves as the anode, while antimony precipitates at the cathode, thereby achieving the separation of the two.

[0004] At present, when removing copper in pyrometallurgical refining, crude antimony is generally placed directly inside the smelting furnace, so that the crude antimony reacts with the oxidant and the copper removal agent to achieve the purpose of copper removal. However, the crude antimony has different shapes, which affects the copper removal efficiency and is not conducive to the subsequent antimony production.

[0005] To this end, the present invention provides a method for removing copper from a crude antimony alloy. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve the technical problem is: a method for removing copper from a crude antimony alloy according to the present invention comprises the following steps:

[0008] S1. Crushing: Put the crude antimony ore into the crushing seat to crush the crude antimony ore into fine particles;

[0009] S2. Hydrogenation treatment: The crushed crude antimony is put into a smelting furnace. At high temperature, the crude antimony reacts with an oxidant (air or iron oxide) to produce antimony oxide (Sb2O3). This step helps to separate antimony from other metals such as copper, because copper is more easily oxidized at high temperatures.

[0010] S3. Adding copper removal agent: In order to improve the copper removal efficiency, a specific copper removal agent, such as pyrite (FeS2), can be added. Pyrite decomposes at high temperature to produce hydrogen sulfide, which reacts with copper to produce copper sulfide, thereby achieving copper removal;

[0011] S4. Smelting: During the high-temperature smelting process, copper and other impurities will form slag or gas, thus separating from antimony;

[0012] S5. Refining: Through repeated heating and cooling, high-purity antimony is obtained, which can then be cast into ingots or other products.

[0013] Preferably, in S4, the copper removal effect can be optimized by controlling the temperature and time of the smelting furnace.

[0014] Preferably, the crushing seat in S1 also includes a crushing cavity, a crushing plate 1 is fixedly installed at the bottom of the crushing cavity, a support plate is fixedly connected to the bottom of the crushing cavity, a crushing plate 2 is slidably installed at the bottom of the support plate, a plurality of conical blocks are installed on the opposite surfaces of the crushing plate 1 and the crushing plate 2, and the plurality of conical blocks are respectively arranged on the surfaces of the crushing plate 1 and the crushing plate 2 in a linear array, a filter disc is installed at the bottom of the crushing seat and below the crushing cavity, a plurality of sieve slots are opened on the surface of the filter disc, a driving unit is arranged inside the crushing seat, and the driving unit is used to drive the crushing plate 2 to move back and forth, and the bottom of the crushing cavity is connected to the opening of the smelting furnace in S2.

[0015] Preferably, the driving unit includes a horizontal shaft rotatably installed inside the crushing seat, a cam is fixedly connected to the outer surface of the horizontal shaft, the end of the horizontal shaft is connected to the output end of the motor, the protrusion of the cam is in contact with the outer surface of the crushing plate 2, and a limiting spring is fixedly connected to the top of the crushing plate 2 and located in the support plate.

[0016] Preferably, a limiting groove is provided at the bottom of the support plate, the limiting spring is installed in the limiting groove, the upper part of the crushing plate 2 is slidably installed in the limiting groove through a limiting bracket, and an ejection unit is provided inside the crushing seat and below the screen slot, and the ejection unit is used to clear the blocked screen slot.

[0017] Preferably, a material-permeable plate is slidably installed inside the crushing seat and below the screen slot, and a plurality of penetrating thin rods are installed on the surface of the material-permeable plate. Each of the penetrating thin rods and each of the screen slots are arranged in a one-to-one correspondence, and two inclined blocks are installed on the lower end surface of the material-permeable plate. Two L-shaped support rods are installed on the outer surface of the crushing plate 2, and when the crushing plate 2 drives the L-shaped support rod to move, the end of the L-shaped support rod will contact the inclined surface of the inclined block.

[0018] Preferably, a rotating wheel is rotatably installed at the contact position between the L-shaped support rod and the inclined block, a rectangular groove is opened at the bottom of the crushing seat, and the material-permeable plate is slidably installed inside the rectangular groove through the rectangular rod; when working, a rotating wheel is provided to facilitate the squeezing of the inclined block, and under the mutual limitation of the rectangular rod and the rectangular groove, the moving position of the material-permeable plate can be limited, so as to facilitate the mutual combination of the penetrating thin rod and the screen groove at different positions.

[0019] Preferably, a storage seat is installed at the bottom of the crushing seat and on one side of the filter disc, a storage cavity is opened inside the storage seat, a discharge trough is opened inside the storage cavity, a copper removal agent is stored inside the storage cavity, and a discharge unit is arranged inside the storage seat, and the discharge unit is used to allow the copper removal agent to enter the smelting furnace together with the crushed crude antimony.

[0020] Preferably, the discharging unit includes a baffle slidably installed inside the storage cavity, a docking groove is provided on the surface of the baffle, a linkage frame is fixedly connected to the outer surface of the baffle, and the side of the linkage frame away from the baffle is connected to the outer surface of the second crushing plate.

[0021] Preferably, a slide groove adapted to the baffle is provided inside the storage cavity, and the slide groove is designed to facilitate the movement of the baffle.

[0022] The beneficial effects of the present invention are as follows:

[0023] 1. The method for removing copper from a crude antimony alloy described in the present invention drives the second crushing plate to move back and forth through a driving unit, so that the second crushing plate squeezes the crude antimony ore between it and the first crushing plate, and cooperates with the action of the conical block to grind the crude antimony ore into the size of a sieve slot, and then falls into a smelting furnace through the sieve slot. The crushing of the crude antimony ore increases its surface area, which can facilitate subsequent chemical reactions to be more sufficient and effective, and facilitate the separation of copper metal and antimony in the crude antimony.

[0024] 2. The copper removal method of a crude antimony alloy described in the present invention is that during the movement of two L-shaped support rods, the ends of the two L-shaped support rods will contact the inclined surface of the inclined block, so that the inclined block is compressed and moves upward, and the inclined block drives the permeable plate and the penetrating thin rod to move upward. Since the penetrating thin rod and the sieve slot are arranged in a one-to-one correspondence, the penetrating thin rod can clear each sieve slot to avoid the problem of excessive impurities in the crude antimony causing blockage of the sieve slot, which is conducive to the normal falling of the crushed crude antimony into the smelting furnace, and is convenient for the high temperature inside the smelting furnace and the mixing reaction of the oxidant with the crude antimony.

[0025] 3. The copper removal method of a crude antimony alloy described in the present invention drives the linkage frame to move at the same time by the crushing plate two, and the linkage frame drives the baffle to move inside the storage chamber, and then the docking groove will be aligned with the discharge groove. At this time, the copper removal agent inside the storage chamber will follow the crushed crude antimony into the smelting furnace, and the baffle moves synchronously with the crushing plate two, and the crushing plate two drives the permeable plate to move synchronously. Therefore, when the permeable plate dredges the sieve slot and a part of the crude antimony falls, the copper removal agent will also fall with it. In this way, it can ensure to the greatest extent that different crude antimony and copper removal agents are fully combined, and the copper removal agent is convenient for the decomposition of hydrogen sulfide at high temperature to react with copper to produce copper sulfide, thereby realizing the removal of copper. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention will be further described below in conjunction with the accompanying drawings.

[0027] Figure 1 is a flow chart of the method of the present invention;

[0028] Figure 2 It is a three-dimensional diagram of the crushing seat of the present invention;

[0029] Figure 3 It is a structural diagram of the crushing chamber part in the present invention;

[0030] Figure 4 It is a schematic diagram of the structure of the two parts of the crushing plate in the present invention;

[0031] Figure 5 It is a schematic diagram of the structure of the support plate part in the present invention;

[0032] Figure 6 It is a schematic diagram of the structure of the filter disc part in the present invention;

[0033] Figure 7 It is a schematic diagram of the structure of the thin rod portion that penetrates the present invention;

[0034] Figure 8 It is a partial structural schematic diagram of the material storage seat in the present invention;

[0035] Fig. 9 It is a schematic diagram of the structure of the docking trough and the discharging trough in the present invention.

[0036] In the figure: 1. crushing seat; 2. crushing chamber; 3. crushing plate 1; 4. support plate; 5. crushing plate 2; 6. conical block; 7. filter plate; 701. sieve slot; 8. horizontal axis; 9. cam; 10. limit spring; 11. limit slot; 12. penetrating plate; 13. penetrating thin rod; 14. inclined block; 15. L-shaped support rod; 16. rotating wheel; 17. rectangular slot; 18. storage seat; 181. storage chamber; 19. discharge chute; 20. baffle; 21. docking slot; 22. linkage frame. DETAILED DESCRIPTION

[0037] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0038] like Figure 1 As shown, a method for removing copper from a crude antimony alloy according to an embodiment of the present invention comprises the following steps:

[0039] S1. Crushing: Put the crude antimony ore into the crushing seat 1 to crush the crude antimony ore into fine particles;

[0040] S2. Hydrogenation treatment: The crushed crude antimony is put into a smelting furnace. At high temperature, the crude antimony reacts with an oxidant (air or iron oxide) to produce antimony oxide (Sb2O3). This step helps to separate antimony from other metals such as copper, because copper is more easily oxidized at high temperatures.

[0041] S3. Adding copper removal agent: In order to improve the copper removal efficiency, a specific copper removal agent, such as pyrite (FeS2), can be added. Pyrite decomposes at high temperature to produce hydrogen sulfide, which reacts with copper to produce copper sulfide, thereby achieving copper removal;

[0042] S4. Smelting: During the high-temperature smelting process, copper and other impurities will form slag or gas, thus separating from antimony;

[0043] S5. Refining: Through repeated heating and cooling, high-purity antimony is obtained, which can then be cast into ingots or other products.

[0044] In S4, the copper removal effect can be optimized by controlling the temperature and time of the smelting furnace. The copper removal of crude antimony alloy designed by this method can first crush the crude antimony to increase its surface area, which can facilitate the subsequent chemical reaction to be more effective and convenient for the separation of copper metal and antimony in the crude antimony.

[0045] like Figures 2 to 9 As shown, the crushing seat 1 in S1 also includes a crushing chamber 2, a crushing plate 1 3 is fixedly installed at the bottom of the crushing chamber 2, a support plate 4 is fixedly connected to the bottom of the crushing chamber 2, a crushing plate 2 5 is slidably installed at the bottom of the support plate 4, a plurality of conical blocks 6 are installed on the opposite surfaces of the crushing plate 1 3 and the crushing plate 2 5, and the plurality of conical blocks 6 are respectively arranged on the surfaces of the crushing plate 1 3 and the crushing plate 2 5 in a linear array, a filter disc 7 is installed at the bottom of the crushing seat 1 and below the crushing chamber 2, a plurality of sieve slots 701 are opened on the surface of the filter disc 7, a driving unit is arranged inside the crushing seat 1, and the driving unit is used to drive the crushing plate 2 5 to move back and forth, and the bottom of the crushing chamber 2 is connected to the opening of the smelting furnace in S2;

[0046] During operation, when the crude antimony ore is crushed, the crude antimony ore is put into the crushing chamber 2, and slides along the inner wall of the crushing chamber 2 into between the crushing plate 1 3 and the crushing plate 2 5, and then the crushing plate 2 5 is driven to move back and forth by the driving unit, so that the crushing plate 2 5 squeezes the crude antimony ore between it and the crushing plate 1 3, and cooperates with the action of the conical block 6 to grind the crude antimony ore into the size of the sieve slot 701, and then falls into the smelting furnace through the sieve slot 701. The crushing of the crude antimony ore increases its surface area, which can facilitate the subsequent chemical reaction to be more sufficient and effective, and facilitate the separation of copper metal and antimony in the crude antimony.

[0047] The driving unit includes a transverse shaft 8 rotatably mounted inside the crushing seat 1, a cam 9 is fixedly connected to the outer surface of the transverse shaft 8, an end of the transverse shaft 8 is connected to the output end of the motor, a protrusion of the cam 9 contacts the outer surface of the crushing plate 25, and a limit spring 10 is fixedly connected to the top of the crushing plate 25 and located inside the support plate 4; during operation, when crude antimony is put into the crushing seat 1, the control motor drives the transverse shaft 8 to rotate, and the transverse shaft 8 drives the cam 9 to rotate. During the rotation of the cam 9, the protruding end of the cam 9 contacts the side surface of the crushing plate 25 and squeezes the side surface of the crushing plate 25, so that the crushing plate 25 moves under the support plate 4, and then the distance between the crushing plate 25 and the crushing plate 13 is reduced. Under the action of the conical block 6, it is convenient to crush crude antimony of different shapes, and under the reciprocating movement of the crushing plate 25 driven by the limit spring 10, the crushing effect of the crude antimony is improved, and it is further convenient for the crushed crude antimony to fall out of the screen slot 701.

[0048] The bottom of the support plate 4 is provided with a limiting groove 11, the limiting spring 10 is installed in the limiting groove 11, the upper part of the crushing plate 2 5 is slidably installed in the limiting groove 11 through a limiting bracket, and an ejection unit is provided inside the crushing seat 1 and below the sieve slot 701, and the ejection unit is used to dredge the blocked sieve slot 701;

[0049] During operation, when the crushing plate 25 moves, the upper part of the crushing plate 25 will simultaneously drive the limiting bracket to slide inside the limiting groove 11. Under the action of the limiting groove 11 and the limiting bracket, the crushing plate 25 has a certain limiting effect, thereby improving its crushing effect on crude antimony. Moreover, under the action of the ejection unit, the screen slot 701 can be unblocked to avoid the problem of blockage of the screen slot 701.

[0050] like Figures 3 to 9 As shown, a material-penetrating plate 12 is slidably installed inside the crushing seat 1 and below the sieve slot 701, and a plurality of penetrating thin rods 13 are installed on the surface of the material-penetrating plate 12, and each penetrating thin rod 13 is arranged in a one-to-one correspondence with each sieve slot 701. Two inclined blocks 14 are installed on the lower end surface of the material-penetrating plate 12, and two L-shaped support rods 15 are installed on the outer surface of the crushing plate 2 5. When the crushing plate 2 5 drives the L-shaped support rod 15 to move, the end of the L-shaped support rod 15 will contact the inclined surface of the inclined block 14;

[0051] During operation, when the crushing plate 25 is moved by force, the crushing plate 25 will simultaneously drive the two L-shaped support rods 15 on the outer surface to move. During the movement, the ends of the two L-shaped support rods 15 will contact the inclined surface of the inclined block 14, so that the inclined block 14 is compressed and moves upward, and the inclined block 14 drives the permeable plate 12 and the penetrating thin rod 13 to move upward. Since the penetrating thin rod 13 and the sieve slot 701 are arranged in a one-to-one correspondence, the penetrating thin rod 13 will clear each sieve slot 701 to avoid the problem of excessive impurities in the crude antimony causing blockage of the sieve slot 701, which is conducive to the normal falling of the crushed crude antimony into the smelting furnace, and is convenient for the high temperature inside the smelting furnace and the mixing reaction of the oxidant with the crude antimony.

[0052] A rotating wheel 16 is rotatably installed at the contact position between the L-shaped support rod 15 and the inclined block 14. A rectangular groove 17 is provided at the bottom of the crushing seat 1, and the material-permeable plate 12 is slidably installed inside the rectangular groove 17 through the rectangular rod. When working, a rotating wheel 16 is provided to facilitate the squeezing of the inclined block 14, and under the mutual limitation of the rectangular rod and the rectangular groove 17, the moving position of the material-permeable plate 12 can be limited, so as to facilitate the mutual combination of the penetrating thin rod 13 and the screen groove 701 at different positions.

[0053] A storage seat 18 is installed at the bottom of the crushing seat 1 and on one side of the filter disc 7. A storage cavity 181 is provided inside the storage seat 18. A discharge trough 19 is provided inside the storage cavity 181. Copper remover is stored inside the storage cavity 181. A discharge unit is provided inside the storage seat 18. The discharge unit is used to allow the copper remover to enter the smelting furnace along with the crushed crude antimony. During operation, when the crude antimony is crushed and falls into the smelting furnace, part of the copper remover can be allowed to enter the smelting furnace along with the crushed crude antimony under the action of the discharge unit, thereby ensuring that different copper removers can be mixed with different crude antimonies, thereby improving the removal effect of copper in the crude antimony.

[0054] The discharging unit includes a baffle 20 slidably mounted inside the storage cavity 181, a docking groove 21 is provided on the surface of the baffle 20, a linkage frame 22 is fixedly connected to the outer surface of the baffle 20, and the side of the linkage frame 22 away from the baffle 20 is connected to the outer surface of the crushing plate 25;

[0055] During operation, in the initial state, the docking groove 21 on the surface of the baffle 20 is not aligned with the discharge trough 19, that is, the discharge trough 19 is blocked by the baffle 20. When the crushing plate 25 moves, the crushing plate 25 will simultaneously drive the linkage frame 22 to move, and the linkage frame 22 drives the baffle 20 to move inside the storage chamber 181. Then, the docking groove 21 will be aligned with the discharge trough 19. At this time, the copper remover inside the storage chamber 181 will enter the smelting furnace together with the crushed crude antimony. Moreover, the baffle 20 moves synchronously with the crushing plate 25, and the crushing plate 25 drives the permeable plate 12 to move synchronously. Therefore, when the permeable plate 12 dredges the screen slot 701 and a part of the crude antimony falls, the copper remover will also fall with it. In this way, it can ensure that different crude antimony and copper removers are fully combined to the greatest extent, and it is convenient for the copper remover to decompose at high temperature to produce hydrogen sulfide, and react with copper to produce copper sulfide, thereby realizing the removal of copper.

[0056] The storage cavity 181 is provided with a slide groove adapted to the baffle 20 , and the slide groove is designed to facilitate the movement of the baffle 20 .

[0057] During operation, when the crude antimony ore is crushed, the crude antimony ore is put into the crushing chamber 2, and slides along the inner wall of the crushing chamber 2 into between the crushing plate 1 3 and the crushing plate 2 5, and then the crushing plate 2 5 is driven to move back and forth by the driving unit, so that the crushing plate 2 5 squeezes the crude antimony ore between it and the crushing plate 1 3, and cooperates with the action of the conical block 6 to grind the crude antimony ore into the size of the sieve slot 701, and then falls into the smelting furnace through the sieve slot 701, which increases the surface area of ​​the crude antimony ore under the crushing, which can facilitate the subsequent chemical reaction to be more sufficient and effective, and facilitate the separation of copper metal and antimony in the crude antimony; when the crude antimony ore is crushed, the surface area of ​​the crude antimony ore is increased ... and the subsequent chemical reaction is more sufficient and effective, and the separation of copper metal and antimony in the crude antimony is facilitated; when the crude antimony ore is crushed, the surface area of ​​the crude antimony ore is increased, and the subsequent chemical reaction is more sufficient and effective, and the separation of copper metal and antimony in the crude antimony is facilitated; when the crude antimony ore is crushed, the surface area of ​​the crude antimony ore is increased, and the surface area of ​​the crude antimony ore is increased, and the surface area of ​​the crude antimony ore is increased, and the surface area of ​​the crude antimony ore is increased, and the surface area of ​​the crude antimony ore is increased, and the surface area of ​​the crude antimony ore is increased, and the surface area of ​​the crude antimony When it is put into the crushing seat 1, the control motor drives the horizontal shaft 8 to rotate, and the horizontal shaft 8 drives the cam 9 to rotate. During the rotation process, the raised end of the cam 9 will contact the side surface of the crushing plate 2 5 and squeeze the side surface of the crushing plate 2 5, so that the crushing plate 2 5 moves under the support plate 4. Then, the distance between the crushing plate 2 5 and the crushing plate 1 3 is reduced. Under the action of the conical block 6, it is convenient to crush the crude antimony of different shapes. Moreover, under the reciprocating movement of the crushing plate 2 5 driven by the limit spring 10, the crushing effect of the crude antimony is improved, and it is further convenient for the crushed crude antimony to fall out of the sieve slot 701.

[0058] When the crushing plate 25 is moved by force, the crushing plate 25 will simultaneously drive the two L-shaped support rods 15 on the outer surface to move. During the movement, the ends of the two L-shaped support rods 15 will contact the inclined surface of the inclined block 14, so that the inclined block 14 is compressed and moves upward, and the inclined block 14 drives the permeable plate 12 and the penetrating thin rod 13 to move upward. Since the penetrating thin rod 13 and the sieve slot 701 are arranged in a one-to-one correspondence, the penetrating thin rod 13 will clear each sieve slot 701 to avoid the problem of excessive impurities in the crude antimony causing blockage of the sieve slot 701, which is conducive to the normal fall of the crushed crude antimony into the smelting furnace, and is convenient for the high temperature inside the smelting furnace and the mixing reaction of the oxidant with the crude antimony; in the initial state, the docking groove 21 on the surface of the baffle 20 is not aligned with the discharge slot 19, that is, the discharge slot 1 9 is blocked by the baffle 20. When the crushing plate 25 moves, the crushing plate 25 will simultaneously drive the linkage frame 22 to move, and the linkage frame 22 drives the baffle 20 to move inside the storage chamber 181. Then the docking groove 21 will be aligned with the discharge groove 19. At this time, the copper remover inside the storage chamber 181 will enter the smelting furnace together with the crushed crude antimony. Moreover, the baffle 20 moves synchronously with the crushing plate 25, and the crushing plate 25 drives the permeable plate 12 to move synchronously. Therefore, when the permeable plate 12 dredges the sieve slot 701 and a part of the crude antimony falls, the copper remover will also fall with it. In this way, it can ensure that different crude antimony and copper removers are fully combined to the greatest extent, and it is convenient for the copper remover to decompose at high temperature to produce hydrogen sulfide, and react with copper to produce copper sulfide, thereby realizing the removal of copper.

[0059] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A method for removing copper from a crude antimony alloy, characterized in that: The following steps are included S1. Crushing: Put the crude antimony ore into a crushing seat (1) to crush the crude antimony ore into fine particles; S2. Hydrogenation treatment: The crushed crude antimony is put into a smelting furnace. At high temperature, the crude antimony reacts with an oxidant (air or iron oxide) to produce antimony oxide (Sb2O3). This step helps to separate antimony from other metals such as copper, because copper is more easily oxidized at high temperatures. S3. Adding copper removal agent: In order to improve the copper removal efficiency, a specific copper removal agent, such as pyrite (FeS2), can be added. Pyrite decomposes at high temperature to produce hydrogen sulfide, which reacts with copper to produce copper sulfide, thereby achieving copper removal; S4. Smelting: During the high-temperature smelting process, copper and other impurities will form slag or gas, thus separating from antimony; S5. Refining: Through repeated heating and cooling, high-purity antimony is obtained, which can then be cast into ingots or other products.

2. The method for removing copper from a crude antimony alloy according to claim 1, characterized in that: In S4, the copper removal effect can be optimized by controlling the temperature and time of the smelting furnace.

3. The method for removing copper from a crude antimony alloy according to claim 1, characterized in that: The crushing seat (1) in S1 further comprises a crushing chamber (2), wherein a crushing plate 1 (3) is fixedly mounted at the bottom of the crushing chamber (2), a support plate (4) is fixedly connected to the bottom of the crushing chamber (2), a crushing plate 2 (5) is slidably mounted at the bottom of the support plate (4), a plurality of conical blocks (6) are mounted on the opposite surfaces of the crushing plate 1 (3) and the crushing plate 2 (5), and the plurality of conical blocks (6) are respectively arranged in a linear array on the surfaces of the crushing plate 1 (3) and the crushing plate 2 (5), a filter disc (7) is mounted at the bottom of the crushing seat (1) and below the crushing chamber (2), a plurality of sieve slots (701) are provided on the surface of the filter disc (7), a driving unit is arranged inside the crushing seat (1), and the driving unit is used to drive the crushing plate 2 (5) to move back and forth, and the bottom of the crushing chamber (2) is connected to the opening of the smelting furnace in S2.

4. The method for removing copper from a crude antimony alloy according to claim 3, characterized in that: The driving unit comprises a transverse shaft (8) rotatably mounted inside the crushing seat (1), a cam (9) being fixedly connected to the outer surface of the transverse shaft (8), an end of the transverse shaft (8) being connected to the output end of the motor, a raised portion of the cam (9) being in contact with the outer surface of the second crushing plate (5), and a limit spring (10) being fixedly connected to the top of the second crushing plate (5) and located inside the support plate (4).

5. The method for removing copper from a crude antimony alloy according to claim 4, characterized in that: A limiting groove (11) is provided at the bottom of the support plate (4), the limiting spring (10) is installed in the limiting groove (11), the upper part of the second crushing plate (5) is slidably installed in the limiting groove (11) through a limiting bracket, and an ejection unit is provided inside the crushing seat (1) and below the sieve groove (701), and the ejection unit is used to clear a blocked sieve groove (701).

6. The method for removing copper from a crude antimony alloy according to claim 5, characterized in that: A material-penetrating plate (12) is slidably installed inside the crushing seat (1) and below the sieve slot (701). A plurality of penetrating thin rods (13) are installed on the surface of the material-penetrating plate (12). Each penetrating thin rod (13) and each sieve slot (701) are arranged in a one-to-one correspondence. Two inclined blocks (14) are installed on the lower end surface of the material-penetrating plate (12). Two L-shaped support rods (15) are installed on the outer surface of the crushing plate 2 (5). When the crushing plate 2 (5) drives the L-shaped support rods (15) to move, the ends of the L-shaped support rods (15) will contact the inclined surfaces of the inclined blocks (14).

7. The method for removing copper from a crude antimony alloy according to claim 6, characterized in that: A rotating wheel (16) is rotatably mounted at the contact position between the L-shaped support rod (15) and the inclined block (14); a rectangular groove (17) is provided at the bottom of the crushing seat (1); and the material-permeable plate (12) is slidably mounted inside the rectangular groove (17) via a rectangular rod.

8. The method for removing copper from a crude antimony alloy according to claim 6, characterized in that: A storage seat (18) is installed at the bottom of the crushing seat (1) and on one side of the filter disc (7); a storage cavity (181) is provided inside the storage seat (18); a discharge trough (19) is provided inside the storage cavity (181); a copper removal agent is stored inside the storage cavity (181); a discharge unit is provided inside the storage seat (18); the discharge unit is used to allow the copper removal agent to enter the smelting furnace together with the crushed crude antimony.

9. The method for removing copper from a crude antimony alloy according to claim 8, characterized in that: The discharging unit comprises a baffle (20) slidably mounted inside the material storage cavity (181), a docking groove (21) is provided on the surface of the baffle (20), a linkage frame (22) is fixedly connected to the outer surface of the baffle (20), and the side of the linkage frame (22) away from the baffle (20) is connected to the outer surface of the second crushing plate (5).

10. The method for removing copper from a crude antimony alloy according to claim 9, characterized in that: A sliding groove adapted to the baffle plate (20) is provided inside the material storage cavity (181).

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