Low-cost high-efficiency open circuit for arsenic in copper electrolysis and resource utilization method of low-cost high-efficiency open circuit

A low-cost, copper electrolysis technology, applied in the direction of electrolysis components, electrolysis process, process efficiency improvement, etc., can solve the problem of high content of antimony or bismuth, and achieve the effect of low cost, satisfying requirements and wide source of raw materials

Pending Publication Date: 2022-05-27
ZIJIN MINING GROUP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although the above-mentioned process can realize the removal of arsenic, it still has the problem that the content of antimony or bismuth is too high, so there is an urgent need for a direct and high-efficiency method for opening the arsenic in the copper electrolyte to realize the harmless disposal of arsenic

Method used

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  • Low-cost high-efficiency open circuit for arsenic in copper electrolysis and resource utilization method of low-cost high-efficiency open circuit
  • Low-cost high-efficiency open circuit for arsenic in copper electrolysis and resource utilization method of low-cost high-efficiency open circuit
  • Low-cost high-efficiency open circuit for arsenic in copper electrolysis and resource utilization method of low-cost high-efficiency open circuit

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Experimental program
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Effect test

Embodiment 1

[0028] This embodiment provides a low-cost, high-efficiency open circuit for arsenic in copper electrolysis and a method for resource utilization thereof. The process is as follows figure 1 shown.

[0029] Main element content of copper electrolyte water sample: Cu 27.2g / L, As 26g / L, Ti 1.02mg / L, Na 3.54g / L, H 2 SO 4 353g / L.

[0030] (1) Preparation of precipitant

[0031] 70 g of titanyl sulfate was dissolved in 1.4 L of deionized water, and the reaction was stirred to 5 °C by an ice-water bath method. Slowly add 480g / L sodium hydroxide solution to adjust the pH to about 5. After the reaction is completed, carry out solid-liquid separation, and wash with deionized water until the conductivity is at 50us.cm -1 about, drying and grinding to obtain a titanium-containing precipitant.

[0032] (2) Arsenic removal

[0033] The addition amount of the titanium-containing precipitant is 1 times the mass of the total arsenic. Specifically, 26 g of the activated titanium-containi...

Embodiment 2

[0049] This embodiment provides a low-cost, high-efficiency open circuit for arsenic in copper electrolysis and a method for resource utilization thereof.

[0050] Main element content of copper electrolyte water sample: Cu 10.78g / L, As 23.92g / L, Ti2 SO 4 320.3g / L.

[0051] (1) Arsenic removal

[0052] The amount of titanium sulfate added is twice the mass of the total arsenic. Specifically, 191.36g of titanium sulfate is added to 4L of copper electrolyte, and the reaction is carried out at a temperature of 90 ° C for 1 hour; Arsenic residue;

[0053] (2) Alkaline leaching regeneration of arsenic-containing slag

[0054] The precipitation arsenic residue and 250g / L sodium hydroxide solution were mixed according to a liquid-solid mass ratio of 2:1, and the reaction was carried out at a temperature of 110 ° C for 1 hour; after liquid-solid separation, an arsenic-containing alkali leaching solution and a regenerated precipitant were obtained;

[0055] (3) Regenerating precipit...

Embodiment 3

[0067] This embodiment provides a low-cost, high-efficiency open circuit for arsenic in copper electrolysis and a method for resource utilization thereof.

[0068] Main element content of copper electrolyte water sample: Cu 59.69g / L, As 11.58g / L, Ti 0.42mg / L, Na3.44g / L, H 2 SO 4 186g / L.

[0069] (1) Arsenic removal

[0070] The addition amount of the titanium-containing precipitating agent is 5 times the mass of the total arsenic. Specifically, adding 57.9 g of the activated precipitating agent prepared by titanium oxysulfate to 1 L of copper electrolyte, and reacting at 60°C for 6 hours; Separation to obtain dearsenic electrolyte solution and arsenic precipitation residue;

[0071] (2) Alkaline leaching regeneration of precipitation arsenic residue

[0072] The precipitation arsenic residue and 100g / L sodium hydroxide solution are mixed according to the liquid-solid ratio of 5, and the reaction temperature is controlled to be 90°C and the reaction time is 2 hours;

[00...

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Abstract

The invention discloses a low-cost high-efficiency open circuit and resource utilization method of arsenic in copper electrolysis, which adopts a circulating process of removing arsenic from open circuit electrolyte by a titaniferous precipitant, performing alkaline leaching regeneration on arsenic precipitation slag, acidizing and removing sodium by a regenerated precipitant, and performing reduction and electrodeposition on an arsenic-containing alkaline leaching solution to prepare metal arsenic. According to the method, efficient removal and resource utilization of arsenic in the electrolyte can be achieved, formation of particle floating objects and dissolution loss of titanium salt in the precipitant can be avoided, and the influence on an electrolysis system is eliminated.

Description

technical field [0001] The invention relates to the fields of non-ferrous metal smelting and environmental protection, in particular to a low-cost and high-efficiency open circuit of arsenic in copper electrolysis and a method for resource utilization thereof. Background technique [0002] In the process of copper electrolytic refining, it is necessary to retain a certain arsenic concentration to control the influence of antimony and bismuth impurities on the quality of cathode copper. After the content reaches a certain concentration, the arsenic must be opened by purifying and filtering the copper electrolyte. The traditional copper electrolyte purification process generally adopts the induced copper removal and arsenic electrowinning method. Although this method can remove some arsenic, antimony and bismuth impurities, the copper content in the output black copper mud is as high as 60%, resulting in the loss of valuable metals. At the same time, there are also problems s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B30/04C22B7/00C25C7/06C25C1/22
CPCC22B30/04C22B7/006C25C7/06C25C1/22Y02P10/20
Inventor 王乾坤匡晨陈杭张恒星吴星琳王俊娥
Owner ZIJIN MINING GROUP
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