Method for separating and recovering chromium-zirconium-copper waste

Abstract

Chromium-zirconium copper is high-conductivity, high-strength and heat-resisting alloy and is mainly used for manufacturing resistance welding electrodes, electric discharge machining electrodes, die base metal and the like. 4-5% of waste can be generated in the production process of chromium-zirconium-copper alloy, and five to six hundred tons of waste is generated in factories if 10000 tons of chromium-zirconium-copper alloy is produced per year. It can be known through analysis on industrial production waste that copper accounts for 70-80% of the waste, chromium-zirconium alloy accounts for 5-15% of the waste, ash accounts for about 8-10% of the waste, and the waste also contains a small quantity of metal oxide. If the waste is not recovered, the environment can be polluted, and resource waste can be caused; if the waste is directly recovered, the purity of produced copper salt is too low and cannot reach the industrial standard. Practice proves that by adoption of a method for separating and recovering the chromium-zirconium-copper waste, high-purity chromium-zirconium alloy can be recovered, high-purity blue vitriol (with the purity reaching the industrial first level) can also be obtained, both the high-purity chromium-zirconium alloy and the high-purity blue vitriol can be recovered and reused, and the method has economic significance and environment-protection significance.

Description

technical field [0001] The invention proposes a method for separating and recycling chromium, zirconium and copper waste. Background technique [0002] Chromium-zirconium copper is a wear-resistant and heat-resistant alloy with high conductivity and high strength. It is mainly used to make resistance welding electrodes, EDM electrodes, and mold base materials. The production process of chromium-zirconium copper alloy will produce 4-5% waste, and the annual output of a factory with an annual output of 10,000 tons is 500 to 600 tons. Analysis of industrial production waste shows that copper accounts for 70-80%, chromium-zirconium alloy accounts for 5-15%, ash accounts for about 8-10%, and there are also a small amount of metal oxides. If these wastes are not recycled, they will not only pollute the environment but also cause a waste of resources; if they are recycled directly, the purity of the copper salt produced will be too low to meet industrial standards. Facts have pro...

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Problems solved by technology

If these wastes are not recycled, they will not only pollute the environment but also cause a waste of resources; if they are directly recycled, the purity of the produced copper salts will be too low to meet industrial standards

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