Antimony and bismuth recovery method

Abstract

The invention discloses an antimony and bismuth recovery method; and the method adopts an antimony and bismuth common elution process or an antimony or bismuth single elution process to elute antimonyand bismuth contained solution. The antimony and bismuth recovery method adopts the antimony and bismuth common elution process to treat the antimony and bismuth contained solution to realize antimony and bismuth recovery, and adopts the antimony or bismuth single elution process to treat the antimony and bismuth contained solution to realize single recovery of antimony and bismuth; and the two elution processes do not influence other components in the antimony and bismuth contained solution, and can synchronously realize decontamination of the antimony and bismuth contained solution. The method has the advantages of simple process, easy operation, low recovery cost, low waste liquid generation quantity, greenness and environmental protection, can effectively recover antimony and bismuthin the antimony and bismuth contained solution, achieves higher use value and application prospect, is suitable for large-scale recovery of antimony and bismuth, and facilitates industrial treatment.

Description

technical field [0001] The invention belongs to the field of metallurgy and relates to a method for recovering antimony and bismuth. Background technique [0002] In the traditional copper electrolytic refining process, the quality of electrodeposited copper will be affected due to the continuous dissolution and accumulation of impurity elements such as antimony and bismuth in the electrolyte. [0003] At present, the traditional antimony and bismuth impurity purification processes in copper electrolyte include electrowinning, co-precipitation, extraction, membrane separation and ion exchange, etc. Each of these processes has different advantages and disadvantages. Among them, the ion exchange method is to adsorb the antimony and bismuth impurities in the copper electrolyte through the resin, and then use the eluent to backwash and regenerate and recycle. It needs to solve the problems of eluent recycling and elution wastewater treatment. For example, in patent 201310472852...

AI Technical Summary

Problems solved by technology

For example, in patent 201310472852.6, EDTA solution is used for elution, which has the following problems: (1) The recycling of the eluted liquid and the recovery of antimony and bismuth in it require repeated addition of acid and alkali; (2) EDTA in the eluent The recycling and recycling of the eluent requires the use of various membrane technologies for treatment and multiple precipitation and pressure filtration, and the recycling cost is relatively high; The number of times is greatly limited, and it needs to be continuously discharged; (4) The amount of wastewater discharged from the entire system is relatively large, and the treatment of the discharged EDTA wastewater is relatively difficult

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