Preparation method for recovering refining agent with impure red copper

Abstract

The invention discloses a preparation method for recovering a refining agent with impure red copper. The preparation method comprises the following steps: mixing sodium borate, calcium fluoride, sodium carbonate and rhenium powder according to percentage by weight that Na2B4O7 is 10-25%, CaF2 is 15-30%, Na2CO3 is 40-65%, and La is 1-3%, smelting the mixture at a high temperature, cooling and crushing the smelted mixture to obtain the refining agent. The refining agent prepared by the method disclosed by the invention is low in cost and use cost, and has the obvious functions of deoxidization, degassing and removal of impurities, so as to effectively purify copper liquid and increase the conductivity of the regenerated red copper.

Description

technical field [0001] The invention relates to the technical field of red miscellaneous copper recovery and refining, in particular to a preparation method of a red miscellaneous copper recovery and refining agent. Background technique [0002] Red copper refers to copper alloys with copper content greater than 96% and above. At present, the method of recycling red copper to prepare pure copper is mainly to cast red copper into anode copper through fire treatment, and then electrolytically refine it into electrolytic copper. Through electrolytic purification, it is bound to consume a large amount of energy. Compared with the method of electrolytic purification and reproducing products by ore smelting, the direct use of red copper to produce pure copper alloy products will save energy by more than 80%, which is about 80% more energy-saving than the method of electrolytic purification and reproducing products. 50%, and the electrolysis process is serious to environmental pol...

AI Technical Summary

Problems solved by technology

At present, it is mainly recycled by direct refining and impurity removal. The refining agent used for refining and impurity removal is mainly a composite refining agent composed of copper-boron master alloy or copper-phosphorus master alloy and ordinary charcoal, but the effect of impurity removal is not ideal. Patent document CN103146943A discloses A kind of red miscellaneous copper refining agent is proposed, and the red miscellaneous copper refining agent of the present invention is a kind of multi-element alloy, and its chemical composition (percentage by weight) is: B=3.5~5.5%; Mg=3.5~5.0%; Ce=8.0 ~11.5%; Pr=6.0~8.0%; Y=6.0~8.0%, the total content of rare earth elements Ce, Pr, Y is 20.0~27.5wt%, the balance is Cu; it can effectively remove Ni, and the removal rate can reach 68 %above

However, this refining agent uses a large amount of rare earth metals with high price, and the use cost is high, so the promotion and utilization value is limited

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