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

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...

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