Method for separating rare earth, iron, copper, cobalt and tungsten from alloy

Abstract

The invention discloses a process for separating rare earth, copper, iron, cobalt, and tungsten from alloys. The treating process of the separation of the rare earth is that sulphuric acid and hydrogen dioxide solution are added to the alloy, the alloy is quickly dissolved to sulphate solution, and alkali metal salt or alkaline earth metal salt is added to the sulphate solution to generate sulfuric double salt precipitation of the rare earth, the sulfuric double salt precipitation is added with alkali and is converted to rare earth hydrate, and the rare earth hydrate is treated and rare earth is recycled. The treating process of the separation of copper, iron, cobalt, and tungsten is that sulphuric acid and hydrogen dioxide solution are added to the alloy, the alloy is quickly dissolved to sulphate solution, and the precipitation of tungsten carbide is simultaneously separated out, alkali is added to the sulphate solution after the solid-liquid separation, the precipitations corresponding to iron, copper and cobalt are respectively separated out by adjusting pH values of different ranges, and copper, iron, cobalt, and tungsten are recycled through the separated precipitations. The invention has low level of facility request, and the whole technology process is simpler, cleaner and safer, and the recovery ratio is high and the energy consumption is low.

Description

technical field [0001] The invention relates to the field of waste metal regeneration treatment, in particular to a method for separating rare earth, iron, copper, cobalt and tungsten from alloys. Background technique [0002] With the improvement of the production and consumption level of non-ferrous metals in our country, the accumulation of waste and miscellaneous metals available in the society is also increasing, including waste rocks, waste residues, waste liquids, waste gases and Useful mineral components in tailings, as well as scrap metals, etc. The extraction and utilization of useful components in these industrial wastes and the reuse of waste industrial products can not only improve the utilization rate of non-ferrous metal resources, but also reduce pollution, protect the ecological environment, save precious metal resources, and play a role in the creation of social civilization and progress. to a positive effect. In addition, mineral resources are non-renewa...

AI Technical Summary

Problems solved by technology

The disadvantage of this type of method is: when the hard alloy is manually broken, it will cause pollution due to the metal material debris of the tool being brought into the broken material. In addition, because the hard alloy with a high cobalt content is not easy to break, the mechanical crushing method is limited Very limited; it is difficult to guarantee the quality of recycled products for cemented carbide mixtures with complex components;

The disadvantage of this type of method is: the power consumption in the whole process is relatively large, the high power consumption per ton of cemented carbide is about 12000KWh, and the low power consumption is more than 6000KWh; in addition, in the process of zinc melting and zinc collection, use Whether the equipment is reasonable will affect the recovery efficiency of zinc. Furthermore, the escape of zinc will have a certain impact on the operator

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