Device for replacing silver chloride with iron powder

Abstract

The utility model discloses a device for replacing silver chloride with iron powder, which belongs to the technical field of gold mine, and comprises a left reaction unit and a right reaction unit, the left reaction unit comprises a left reaction kettle and a left filter, the left reaction kettle is connected with the left filter through a pipeline I, the pipeline I is provided with a left discharge valve, and the right filter is provided with a right discharge valve. A left water adding hole, a hole I and a left operation hole are formed in the top of the left reaction kettle, a stirring device is arranged in the left reaction kettle, and the left filter is connected with a suction filter; the right reaction unit and the left reaction unit have the same structure; the left reaction unit further comprises a first pump used for transferring a solution at the bottom of the left filter into the right reaction unit. The left reaction unit and the right reaction unit which are the same in structure are designed to support continuous operation, after the left reaction unit completes iron powder replacement reaction, filtrate is directly transferred to the right reaction unit to be neutralized, and silver powder loss caused by material transfer is reduced.

Description

Technical Field

[0001] This utility model relates to the field of gold mining technology, and in particular to a device for replacing silver chloride with iron powder. Background Technology

[0002] A gold mine refers to gold ore or a gold deposit (mountain). Gold ore is a mineral aggregate containing sufficient gold for industrial use. A gold mine is a site where gold is obtained through mining operations; it is a large-scale accumulation of industrially usable gold ore formed through mineralization.

[0003] In gold mining systems, silver chloride (AgCl) is the primary form of silver-containing waste, and its efficient recovery is crucial for resource recycling and environmental protection. Traditional methods such as pyrometallurgy (high energy consumption and pollution), cyanidation (high toxicity risk), or direct electrolysis (low efficiency) all have significant drawbacks and cannot meet the requirements of green production.

[0004] Existing technologies often employ a single reactor connected in series with independent filtration equipment, which presents numerous problems, such as: fragmented process: multiple material transfers lead to silver powder loss; inefficient control: pH adjustment relies on manual monitoring, and it is difficult to intervene in real time when the filter cloth is damaged or the liquid level is abnormal; equipment corrosion: acid splashing accelerates the corrosion of the inner wall of the reactor, shortening its service life.

[0005] Therefore, there is an urgent need to propose a device that uses iron powder to replace silver chloride. Utility Model Content

[0006] This invention addresses the shortcomings of existing technologies by providing a device that uses iron powder to replace silver chloride.

[0007] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:

[0008] An apparatus for replacing silver chloride with iron powder includes a left reaction unit and a right reaction unit. The left reaction unit includes a left reaction vessel and a left filter, which are connected by a pipe. The pipe is equipped with a left discharge valve. The top of the left reaction vessel is provided with a left water inlet, a hole, and a left operation hole. A stirring device is provided inside the left reaction vessel. The left filter is connected to a suction filter. The right reaction unit has the same structure as the left reaction unit. The left reaction unit also includes a pump for transferring the solution at the bottom of the left filter to the right reaction unit.

[0009] Furthermore, the left filter has a partition inside, and the partition has pores for filtration.

[0010] Furthermore, the partition is covered with filter cloth.

[0011] Furthermore, the end of the filter is located below the partition.

[0012] Furthermore, the left reaction unit also includes a left spray device located at the top of the left reaction vessel.

[0013] Furthermore, the tops of both the left and right filters are arc-shaped.

[0014] Furthermore, it also includes a settling tank, which is connected to the right filter of the right reaction unit via a second pipe. The second pipe is equipped with a second pump for pumping the solution at the bottom of the right filter into the settling tank.

[0015] Furthermore, the settling tank is connected to a neutralization tank via a pipe three, and a pump three is installed on the pipe three.

[0016] Furthermore, the inner wall of the left reactor is provided with a side baffle.

[0017] Furthermore, both the left and right filters are equipped with liquid level display devices, which are symmetrically arranged and linked to the vacuum filter via a PLC.

[0018] Furthermore, the device also includes multiple three-way valves.

[0019] In summary, compared with the prior art, the beneficial effects of the above technical solution are:

[0020] (1) The design of left and right reaction units with the same structure supports continuous operation. After the iron powder replacement reaction is completed in the left reaction unit, the filtrate is directly transferred to the right reaction unit for neutralization treatment, reducing the loss of silver powder caused by material transfer.

[0021] (2) The vacuum filter filters the solution in the left filter. The pores of the baffle and the filter cloth combine to filter the water and some fine silver powder in the material to the lower part of the left filter, while the material remains on the baffle, thus achieving the separation and filtration operation of the two.

[0022] (3) The side baffle is used to disrupt the swirling flow of the liquid, causing the liquid to generate more radial and tangential flow, thereby enhancing the mixing effect. Specifically, the side baffle can hinder the swirling movement of the liquid along the container wall, forcing the liquid to change its flow direction, generating turbulence, increasing the exchange of matter between different areas, and making the stirring of materials in the reactor more uniform. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model.

[0024] Explanation of reference numerals in the attached diagram: 1. Left reaction unit; 11. Left reactor; 12. Left filter; 121. Baffle; 13. Pipeline 1; 131. Pump 1; 14. Left discharge valve; 15. Left operating port; 16. Left water inlet; 17. Hole 1; 18. Left spray device; 2. Right reaction unit; 21. Right reactor; 22. Right filter; 23. Pipeline 2; 231. Pump 2; 24. Right discharge valve; 25. Right operating port; 26. Right water inlet; 27. Hole 2; 28. Right spray device; 3. Settling tank; 31. Pipeline 3; 32. Pump 3; 4. Neutralization tank; 5. Liquid level display device; 6. Filter; 7. Side baffle; 8. Stirring device. Detailed Implementation

[0025] The principles and features of this utility model are described below with reference to all the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0026] This utility model discloses an apparatus for replacing silver chloride with iron powder.

[0027] Reference Figure 1 An apparatus for replacing silver chloride with iron powder includes a left reaction unit 1 and a right reaction unit 2. The left reaction unit 1 includes a left reaction vessel 11 and a left filter 12, which are connected by a pipe 13. The pipe 13 is equipped with a left discharge valve 14. The top of the left reaction vessel 11 is equipped with a left water inlet 16, a hole 17, a left operation hole 15, and a left spray device 18. If a large amount of material adheres to the inner wall of the left reaction vessel 11, the inner wall of the left reaction vessel 11 can be cleaned by opening the left spray device 18. Hole 17 is an acid inlet. The left reaction vessel 11 is equipped with a stirring device 8. The left filter 12 is connected to a suction filter 6. The right reaction unit 2 has the same structure as the left reaction unit 1. The left reaction unit 1 also includes a pump 131 for transferring the solution at the bottom of the left filter 12 to the right reaction unit 2.

[0028] The design of left and right reaction units with identical structures supports continuous operation. After the iron powder replacement reaction is completed in the left reaction unit 1, the filtrate is directly transferred to the right reaction unit 2 for neutralization treatment, reducing the loss of silver powder caused by material transfer.

[0029] Specifically, the right reaction unit 2 includes a right reaction vessel 21 and a right filter 22. The bottom of the right reaction vessel 21 is connected to the right filter 22 through a pipe 13. The top of the right reaction vessel 21 is provided with a right spray device 28, a right water inlet 26, and a second hole 27. The second hole 27 is a hole for adding alkali solution. The right reaction vessel 21 is provided with a stirring device 8 inside, which is used to stir the materials inside.

[0030] Both the left reactor 11 and the right reactor 21 are equipped with temperature displays and pH meters to display the temperature and acidity / alkalinity of the solutions inside the reactors.

[0031] The left reactor 11 is also equipped with a side baffle 7. In a container without a side baffle 7, the liquid is prone to forming eddies during stirring, especially at high speeds. The liquid may form a central vortex around the stirring shaft, while the liquid at the container edges may not flow sufficiently, resulting in uneven mixing. In this case, materials in different areas of the container may not be able to fully contact each other, affecting reaction efficiency. Therefore, in this embodiment, the side baffle 7 is used to disrupt the swirling flow of the liquid, prompting the liquid to generate more radial and tangential flow, thereby enhancing the mixing effect. Specifically, the side baffle 7 can hinder the swirling movement of the liquid along the container wall, forcing the liquid to change its flow direction, generating turbulence, increasing the exchange of matter between different areas, making the reactants more evenly distributed, the reaction more complete, and ultimately improving the silver recovery rate and overall reaction efficiency.

[0032] First, add a certain amount of tap water to the left reaction vessel 11 through the left water inlet 16. Then, add a certain amount of hydrochloric acid through the acid inlet to prepare an acid solution. Turn on the stirring device 8 on the left reaction vessel 11. The stirring device 8 is specifically a motor and a stirrer. The motor is connected to the stirrer and drives the stirrer to stir so that the materials are mixed evenly. Add a certain amount of silver chloride to the left operation hole 15 at the top of the left reaction vessel 11 and stir until it becomes a slurry. Add a certain amount of iron powder to the left reaction vessel 11 through the left operation hole 15. The iron powder and silver chloride continue to react until the reaction is complete.

[0033] Open the left discharge valve 14 and place the reacted material onto the upper baffle 121 of the left filter 12. The baffle 121 has pores. Place a filter cloth on top of the baffle 121 for filtration. If there are holes in the filter cloth or if most of the material is accidentally drawn to the bottom of the left filter 12, the water and material can be transferred back to the left reactor 11 through the three-way valve, and the material can be discharged and filtered again.

[0034] Furthermore, the top of the left filter 12 is shaped like a pot lid to prevent splashing when discharging materials.

[0035] Then open the filter 6. The end of the filter 6 is connected to the lower part of the partition 121 to facilitate the filtration of the left filter 12. The water and some fine silver powder in the material are filtered to the lower part of the left filter 12, while the material remains on the partition 121.

[0036] Both filters are equipped with a liquid level display device 5, which is linked to the suction filter 6 via a PLC so that the operator can monitor the liquid level inside the filter at any time and prevent the solution from being drawn into the suction filter 6 when the liquid level is too high.

[0037] Then, open the pump 131 on the left side of the left filter 12. The solution at the bottom of the left filter 12 can be transferred to the right reactor 21 through the pump 131. Open the alkali addition hole at the top of the right reactor 21 and add a certain amount of alkali solution to the right reactor 21 until the solution is weakly alkaline (during the process of adding alkali solution, the stirring device 8 on the right reactor 21 is turned on to continuously stir the solution in the right reactor 21). After the reaction is completed, open the right discharge valve 24 between the right reactor 21 and the right filter 22 to discharge the material. The function of the right filter 22 is the same as that of the left filter 12. In case of accidental leakage, the solution can also be transferred back to the right reactor 21 through the three-way valve.

[0038] The structure and function of the right filter 22 are the same as those of the left filter 12. The right filter 22 is also connected to the suction filter 6. After the right filter 22 finishes filtering, the pump 231 is turned on to transfer the solution at the bottom of the right filter 22 to the settling tank 3. The settling tank 3 is also equipped with a baffle 121, and a filter cloth is laid on the baffle 121.

[0039] The settling tank 3 is connected to the neutralization tank 4 via pipe 31. A pump 32 is installed on pipe 31. When pump 32 is turned on, the solution in the settling tank 3 can be transferred to the neutralization tank 4 and enter the wastewater treatment process.

[0040] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An apparatus for replacing silver chloride with iron powder, characterized by: The reaction unit includes a left reaction unit (1) and a right reaction unit (2). The left reaction unit (1) includes a left reaction vessel (11) and a left filter (12). The left reaction vessel (11) and the left filter (12) are connected by a pipe (13). The pipe (13) is equipped with a left discharge valve (14). The top of the left reaction vessel (11) is equipped with a left water inlet (16), a hole (17) and a left operation hole (15). The left reaction vessel (11) is equipped with a stirring device (8). The left filter (12) is connected to a suction filter (6). The right reaction unit (2) has the same structure as the left reaction unit (1). The left reaction unit (1) also includes a pump (131) for transferring the solution at the bottom of the left filter (12) to the right reaction unit (2).

2. A device for replacing silver chloride with iron powder according to claim 1, characterized in that: The left filter (12) has a partition (121) inside, and the partition (121) has pores for filtration; the partition (121) is covered with filter cloth.

3. A device for replacing silver chloride with iron powder according to claim 2, characterized in that: The end of the filter (6) is located below the partition (121).

4. The apparatus for replacing silver chloride with iron powder according to claim 1, characterized in that: The left reaction unit (1) also includes a left spray device (18) located on top of the left reaction vessel (11).

5. The apparatus for replacing silver chloride with iron powder according to any one of claims 1 to 4, characterized in that: The tops of both the left filter (12) and the right filter (22) of the right reaction unit (2) are arc-shaped.

6. The apparatus for replacing silver chloride with iron powder according to claim 5, characterized in that: It also includes a settling tank (3), which is connected to the right filter (22) via a pipe (23). The pipe (23) is equipped with a pump (231) for pumping the solution at the bottom of the right filter (22) into the settling tank (3).

7. A device for replacing silver chloride with iron powder according to claim 6, characterized in that: The settling tank (3) is connected to the neutralization tank (4) via a pipe (31), and a pump (32) is installed on the pipe (31).

8. The apparatus for replacing silver chloride with iron powder according to claim 1, wherein: The inner wall of the left reactor (11) is provided with a side baffle (7).

9. The apparatus for replacing silver chloride with iron powder according to claim 1, wherein: The left filter (12) and the right filter (22) are each equipped with a liquid level display device (5). The two liquid level display devices (5) are symmetrically arranged, and the liquid level display devices (5) are linked with the vacuum filter (6) through a PLC.

10. The apparatus for replacing silver chloride with iron powder according to claim 1, wherein: The device also includes multiple three-way valves.

Images