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Method for recovering copper, selenium and tellurium by cyclone electrolysis cascade and product thereof

A cyclone electrolysis and cascade recovery technology, which is applied in the direction of electrolysis components, electrolysis process, and process efficiency improvement, can solve the problems of complex separation efficiency of components, unable to meet the expected separation requirements, etc., and achieves increased specific surface area, good application prospects, The effect of reducing energy consumption

Active Publication Date: 2020-09-25
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Selenium and tellurium exist in a large amount in the anode slime of copper electrowinning in the industry, but the separation of each component is complicated and the separation efficiency is low, and the expected separation requirements cannot be met. Therefore, better methods and methods are needed. More effective use of raw materials within the construction period to achieve the dual effects of economy and efficiency

Method used

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  • Method for recovering copper, selenium and tellurium by cyclone electrolysis cascade and product thereof
  • Method for recovering copper, selenium and tellurium by cyclone electrolysis cascade and product thereof
  • Method for recovering copper, selenium and tellurium by cyclone electrolysis cascade and product thereof

Examples

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Embodiment 1

[0043] A treatment method for step separation of copper, selenium and tellurium by cyclone electrolysis, comprising the steps of:

[0044] (1) Batching: configuration solution, wherein copper ion concentration 1g / L, selenium ion concentration 1g / L and tellurium ion concentration 1g / L, the hydrochloric acid concentration in the solution is 1M;

[0045](2) swirl electrolysis reaction: the solution of step (1) is packed in the liquid storage tank of swirl electrolysis device, then regulates potential at-0.2V, and the working electrode is the titanium sheet that has high specific surface area through oxidation treatment, The reaction was carried out in a swirl electrolysis device with a graphite electrode, the reaction time was 8 hours, and the reaction temperature was adjusted to 25°C; after the reaction was completed, the working electrode was replaced, the potential was adjusted to -0.4V, the reaction temperature remained unchanged, and the reaction time was After the reaction ...

Embodiment 2

[0049] A treatment method for reclaiming copper, selenium and tellurium in swirl electrolysis cascades, comprising the steps of:

[0050] (1) configuration solution, wherein copper ion concentration is 2.5g / L, selenium ion concentration is 1.7g / L and tellurium ion concentration is 1g / L, and hydrochloric acid concentration is 4M;

[0051] (2) Put the configured solution into the liquid storage tank of the cyclone electrolysis device, set the temperature to 140°C, adjust the potential to -0.22V, and the working electrode is a titanium sheet with a high specific surface area after oxidation treatment, and the counter electrode The reaction is carried out in a swirl electrolysis device with a graphite electrode, and the reaction time is 4 hours; after the reaction, replace the reaction electrode, adjust the point to -0.41V for the reaction, and the reaction time is 4 hours; after the reaction, replace the electrode, and adjust the potential to -0.49 V, to react, the reaction time ...

Embodiment 3

[0056] A treatment method for reclaiming copper, selenium and tellurium in swirl electrolysis cascades, comprising the steps of:

[0057] (1) configuration solution, wherein copper ion concentration is 1.8g / L, selenium ion concentration is 1.8g / L and tellurium ion concentration is 1.5g / L, and hydrochloric acid concentration is 4M;

[0058] (2) Put the configured solution into the liquid storage tank of the cyclone electrolysis device, set the temperature to 60°C, adjust the potential to -0.22V, and the working electrode is an oxidized titanium sheet with a high specific surface area, and the counter electrode The reaction is carried out in a swirl electrolysis device with a graphite electrode, and the reaction time is 8 hours; after the reaction, replace the reaction electrode, adjust the point to -0.41V for the reaction, and the reaction time is 8 hours; after the reaction, replace the electrode, and adjust the potential to -0.50 V, to react, the reaction time is 8h. Element...

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Abstract

The invention discloses a method for stepwise recycling copper, selenium and tellurium through cyclone electrolysis and a product thereof. The method comprises the following steps: cyclone electrolysis reaction: filling a solution containing copper, selenium and strontium ions and hydrochloric acid or sulfuric acid in a cyclone electrolysis reaction device for electrochemical reaction, sequentially adjusting the potentials, performing one time of cyclone electrolysis reaction during each adjustment of the potentials, to obtain a solid mixture of cerium, copper and selenium in sequence; and separation: washing and drying the solid mixture to obtain a simple substance or an oxide of copper, selenium and tellurium individually sequentially. The cathode adopted by the method comprises an oxidized titanium sheet, and the surface molecules of the titanium sheet are of a mesh-like laminated structure, so that not only is the specific surface area of the electrode increased, but also the overall structure is compact and uniform, compared with the stainless steel sheet used in the conventional cyclone electrolysis, the titanium sheet can make contact with the solution better, the adsorptioncapacity is greatly improved, the purity of the obtained product is greatly improved, and the yield is also greatly improved.

Description

technical field [0001] The invention belongs to the technical field of rare (non) metal recovery and pollutant treatment, and in particular relates to a method for recovering copper, selenium and tellurium in swirl electrolysis cascades and a product thereof. Background technique [0002] Copper is a non-ferrous metal closely related to human beings, and is widely used in electrical, light industry, machinery manufacturing, construction industry, national defense industry and other fields. Copper is a "green" metal, mainly because it has a low melting point and is easily remelted and resmelted, so it's fairly cheap to recycle. But at the same time, there is a large amount of copper in a large amount of waste in our country, and how to recover copper metal with the greatest effect is also a difficult problem. [0003] Selenium is widely used in glass, ceramics, dyes, rubber, petrochemical, metallurgy, electroplating and other industrial fields, especially in high-tech indust...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25B15/02C25C1/12C25B1/00C25C7/06
CPCC25B1/00C25B15/02C25C1/12C25C7/06Y02P10/20
Inventor 金伟胡美清陈建平
Owner JIANGNAN UNIV