Whole mud cyanide slurry separation system

Abstract

This utility model discloses a whole-sludge cyanide slurry separation system, which includes a cyanide leaching device, a precious liquor storage tank, a precious liquor hydraulic filter, a precipitant dosing pipeline, a precipitant storage tank, an activated carbon adsorption device, and an electrolytic cell. The outlet of the precious liquor from the cyanide leaching device is connected to the inlet pipeline of the precious liquor storage tank, the outlet of the precious liquor storage tank is connected to the inlet pipeline of the precious liquor hydraulic filter, and a precipitant dosing pipeline connects the outlet of the precious liquor storage tank and the inlet of the precious liquor hydraulic filter. The precipitant dosing pipeline is connected to the outlet of the precipitant storage tank. The filtrate outlet of the precious liquor hydraulic filter is connected to the inlet pipeline of the activated carbon adsorption device, and the carbon-rich outlet of the activated carbon adsorption device is connected to the inlet pipeline of the electrolytic cell. The advantages of this utility model are: after leaching gold and silver with cyanide in the cyanide leaching stage, the silver element is separated from the gold element using a precipitant and a precious liquor hydraulic filter. The silver precipitate is sent to the smelting workshop for smelting and purification treatment.

Description

Technical Field

[0001] This utility model relates to the field of whole mud cyanidation technology, specifically to a whole mud cyanidation slurry separation system. Background Technology

[0002] The whole-sludge cyanidation carbon-in-pulp process specifically involves crushing all the gold ore sequentially through a jaw crusher and a cone crusher, then grinding it into slurry using a ball mill, followed by cyanidation leaching, and then using activated carbon to directly adsorb the dissolved gold from the slurry to form gold-loaded carbon. Finally, gold mud is obtained through desorption and electrolysis.

[0003] Technical problems with the whole-sludge cyanidation carbon-in-pulp process: During the processing of low-grade oxidized ore in the whole-sludge cyanidation system, the ore contains approximately 2 g / t of gold and 21 g / t of silver, with silver content being 8-10 times that of gold. The silver content in the precious liquor obtained after leaching is also approximately 8-10 times that of gold. This causes activated carbon to primarily adsorb silver when adsorbing gold and silver in the precious liquor, resulting in a decreased gold adsorption effect. Furthermore, once silver adsorption is saturated, gold adsorption almost ceases, leading to unsatisfactory gold adsorption and severely impacting gold recovery. Additionally, during activated carbon electrolysis, the high silver content and incomplete silver electrolysis also affect the gold electrolysis effect. Utility Model Content

[0004] The purpose of this invention is to provide a whole-mud cyanide slurry separation system to solve the problems of unsatisfactory gold adsorption and poor gold electrolysis.

[0005] This utility model is implemented by the following technical solution: a whole mud cyanide slurry separation system, which includes a cyanide leaching device, a precious liquid storage tank, a precious liquid filter, a precipitant dosing pipeline, a precipitant storage tank, an activated carbon adsorption device, and an electrolytic cell; The outlet of the cyanide leaching device is connected to the inlet pipeline of the cyanide storage tank, the outlet of the cyanide storage tank is connected to the inlet pipeline of the cyanide hydraulic filter, the pipeline between the outlet of the cyanide storage tank and the inlet of the cyanide hydraulic filter is connected to the precipitant dosing pipeline, and the precipitant dosing pipeline is connected to the outlet of the precipitant storage tank. The filtrate outlet of the hydraulic filter is connected to the inlet pipeline of the activated carbon adsorption device, and the carbon-rich outlet of the activated carbon adsorption device is connected to the inlet pipeline of the electrolytic cell.

[0006] Furthermore, the cyanide leaching apparatus includes a cyanide leaching tank and a cyanide dosing tank, with the outlet of the cyanide dosing tank connected to the inlet pipeline of the cyanide leaching tank.

[0007] Furthermore, the tailings outlet of the cyanide leaching tank is connected to the inlet pipeline of the tailings storage tank. Furthermore, the activated carbon adsorption device includes an activated carbon adsorption tank and a filter. The inlet of the activated carbon adsorption tank is connected to the filtrate outlet pipeline of the hydraulic filter, the outlet of the activated carbon adsorption tank is connected to the inlet pipeline of the filter, the carbon-rich outlet of the filter is connected to the inlet pipeline of the electrolytic cell, and the slurry outlet of the filter is connected to the inlet pipeline of the cyanide leaching tank.

[0008] Furthermore, the lean carbon outlet of the electrolytic cell is connected to the inlet of the lean carbon storage tank, the outlet of the lean carbon storage tank is connected to the inlet pipeline of the activated carbon adsorption tank, and the gold mud outlet of the electrolytic cell is connected to the inlet pipeline of the gold mud storage tank.

[0009] Furthermore, the precipitant storage tank is a sodium sulfide solution storage tank.

[0010] Furthermore, the filter cake from the aforementioned hydraulic filter is sent to the smelting workshop.

[0011] The advantages of this utility model are: after leaching gold and silver with cyanide in the cyanide leaching process, silver is separated from gold by using a precipitant and a high-precipitate hydraulic filter. The silver precipitate is sent to the smelting workshop for smelting and purification, which reduces the problem of incomplete electrolysis, ensures the yield of silver, and reduces the difficulty of extraction. Through the high-efficiency hydraulic filter, gold elements enter the activated carbon adsorption tank, where they are adsorbed by the activated carbon and then electrolyzed. This effectively reduces the silver content during subsequent activated carbon adsorption and electrolysis processes, ensuring the adsorption and electrolysis effects of gold. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a process flow diagram of the utility model; In the diagram: 1. Cyanide leaching unit, 1.1. Cyanide dosing tank, 1.2. Precious liquor storage tank, 2. Precious liquor hydraulic filter, 3. Precipitant dosing pipeline, 4. Precipitant storage tank, 5. Activated carbon adsorption unit, 6. Activated carbon adsorption tank, 6.1. Filter, 6.2. Electrolytic cell, 7. Smelting workshop, 8. Tailings storage tank, 9. Lean carbon storage tank, 10. Gold mud storage tank, 11. Raw ore slurry pipeline, 12. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] like Figure 1 As shown, the whole mud cyanide slurry separation system includes a cyanide leaching unit 1, a precious liquor storage tank 2, a precious hydraulic filter 3, a precipitant dosing pipeline 4, a precipitant storage tank 5, an activated carbon adsorption unit 6, and an electrolytic cell 7. The raw ore slurry pipeline is connected to the inlet of the cyanide leaching unit 1, and the precious liquor outlet of the cyanide leaching unit 1 is connected to the inlet pipeline of the precious liquor storage tank 2. The cyanide leaching unit 1 includes a cyanide leaching tank 1.1 and a cyanide dosing tank 1.2. The outlet of the cyanide dosing tank 1.2 is connected to the inlet pipeline of the cyanide leaching tank 1.1, and the tailings outlet of the cyanide leaching tank 1.1 is connected to the inlet pipeline of the tailings storage tank 9. The raw ore slurry and cyanide reagent react fully in the cyanide leaching unit 1.

[0016] The outlet of the precious liquid storage tank 2 is connected to the inlet pipeline of the precious hydraulic filter 3. The pipeline between the outlet of the precious liquid storage tank 2 and the inlet of the precious hydraulic filter 3 is connected to the precipitant dosing pipeline 4. The precipitant dosing pipeline 4 is connected to the outlet of the precipitant storage tank 5, which is a sodium sulfide solution storage tank.

[0017] The filtrate outlet of the hydraulic filter 3 is connected to the inlet pipeline of the activated carbon adsorption device 6, the carbon-rich outlet of the activated carbon adsorption device 6 is connected to the inlet pipeline of the electrolytic cell 7, and the filter cake of the hydraulic filter 3 is sent to the smelting workshop 8.

[0018] The activated carbon adsorption device 6 includes an activated carbon adsorption tank 6.1 and a filter 6.2. The inlet of the activated carbon adsorption tank 6.1 is connected to the filtrate outlet pipeline of the hydraulic filter 3, the outlet of the activated carbon adsorption tank 6.1 is connected to the inlet pipeline of the filter 6.2, the carbon-rich outlet of the filter 6.2 is connected to the inlet pipeline of the electrolytic cell 7, and the slurry outlet of the filter 6.2 is connected to the inlet pipeline of the cyanide leaching tank 1.1.

[0019] The outlet of the electrolytic cell 7 is connected to the inlet of the lean carbon storage tank 10, the outlet of the lean carbon storage tank 10 is connected to the inlet pipeline of the activated carbon adsorption tank 6.1, and the outlet of the electrolytic cell 7 is connected to the inlet pipeline of the gold mud storage tank 11.

[0020] The specific operation process of this embodiment is as follows: Cyanide is added to cyanide leaching tank 1.1 through cyanide dosing tank 1.2. In cyanide leaching tank 1.1, cyanide is fully mixed with ore slurry to leach gold and silver elements from ore slurry. The tailings produced in the cyanide leaching tank 1.1 are sent to the tailings storage tank 9 for storage, while the precious liquor produced is sent to the precious liquor storage tank 2. During the process of sending the precious liquid in the precious liquid storage tank 2 to the precious liquid filter 3, a silver precipitant (sodium sulfide) is added to its conveying pipeline through the precipitant dosing pipeline 4. During the conveying process, the precipitant and the precious liquid are fully mixed to generate silver sulfide precipitate. In the precious liquid filter 3, the silver sulfide precipitate forms a filter cake. The produced filter cake is sent to the smelting workshop 8 for the next step of smelting and purification. The filtrate from the hydraulic filter 3 is sent to the activated carbon adsorption tank 6.1, where the activated carbon adsorbs the gold element. After passing through the filter 6.2, the gold-loaded carbon is sent to the electrolytic cell 7, and the resulting slurry is sent to the cyanide leaching tank 1.1 for recycling. Electrolysis in electrolytic cell 7 separates lean carbon and gold mud. The lean carbon is sent to activated carbon adsorption tank 6.1 for reuse, while the gold mud is stored in gold mud storage tank 11 and the activated carbon is reused, reducing raw material costs.

[0021] After gold and silver are leached out using cyanide in the cyanide leaching stage, silver is separated from gold using a precipitant and a high-pressure filter press 3. The silver precipitate is sent to the smelting workshop 8 for smelting and purification, which reduces the problem of incomplete electrolysis, ensures the yield of silver, and reduces the extraction difficulty. After filtration, the gold enters the activated carbon adsorption tank 6.1, where it is adsorbed by activated carbon, which effectively reduces the silver content in subsequent activated carbon adsorption and electrolysis processes, ensuring the adsorption and electrolysis effects of gold.

[0022] 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. A whole-sludge cyanide slurry separation system, characterized in that, It includes a cyanide leaching unit, a precious liquor storage tank, a precious liquid filter, a precipitant dosing pipeline, a precipitant storage tank, an activated carbon adsorption unit, and an electrolytic cell; The outlet of the cyanide leaching device is connected to the inlet pipeline of the cyanide storage tank, the outlet of the cyanide storage tank is connected to the inlet pipeline of the cyanide hydraulic filter, the pipeline between the outlet of the cyanide storage tank and the inlet of the cyanide hydraulic filter is connected to the precipitant dosing pipeline, and the precipitant dosing pipeline is connected to the outlet of the precipitant storage tank. The filtrate outlet of the hydraulic filter is connected to the inlet pipeline of the activated carbon adsorption device, and the carbon-rich outlet of the activated carbon adsorption device is connected to the inlet pipeline of the electrolytic cell.

2. The whole-sludge cyanide slurry separation system according to claim 1, characterized in that, The cyanide leaching apparatus includes a cyanide leaching tank and a cyanide dosing tank, with the outlet of the cyanide dosing tank connected to the inlet pipeline of the cyanide leaching tank.

3. The whole-sludge cyanide slurry separation system according to claim 2, characterized in that, The tailings outlet of the cyanide leaching tank is connected to the inlet pipeline of the tailings storage tank.

4. The whole-sludge cyanide slurry separation system according to claim 3, characterized in that, The activated carbon adsorption device includes an activated carbon adsorption tank and a filter. The inlet of the activated carbon adsorption tank is connected to the filtrate outlet pipeline of the hydraulic filter, the outlet of the activated carbon adsorption tank is connected to the inlet pipeline of the filter, the carbon-rich outlet of the filter is connected to the inlet pipeline of the electrolytic cell, and the slurry outlet of the filter is connected to the inlet pipeline of the cyanide leaching tank.

5. The whole-sludge cyanide slurry separation system according to claim 4, characterized in that, The outlet of the electrolytic cell is connected to the inlet of the lean carbon storage tank, the outlet of the lean carbon storage tank is connected to the inlet pipeline of the activated carbon adsorption tank, and the outlet of the electrolytic cell is connected to the inlet pipeline of the gold mud storage tank.

6. The whole-sludge cyanide slurry separation system according to claim 5, characterized in that, The precipitant storage tank is a sodium sulfide solution storage tank.

7. The whole-sludge cyanide slurry separation system according to claim 6, characterized in that, The filter cake from the aforementioned hydraulic filter is sent to the smelting workshop.

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