Method for recovering gallium from brown aluminum oxide dust collecting material

Abstract

The invention provides the method for recovering gallium from the brown aluminum oxide dust collecting material, which is simple to operate, free of pollution and high in purity of the recovered metal product. The method comprises the following steps: (1) roasting: mixing a brown fused alumina dust collecting material containing a gallium compound with strong acid salt, and then roasting; (2) leaching and separation: leaching the roasted material with pure water, filtering and separating, discarding insoluble substances, and adding alkali liquor into filtrate for adjustment; and (3) electrolysis: electrolyzing the gallium solution which is separated and added with the alkali liquor to obtain metal gallium. The method can be applied to the field of rare metal recovery.

Description

technical field [0001] The invention relates to the field of rare metal recovery, in particular to a method for recovering gallium from brown corundum dust collection materials. Background technique [0002] With the continuous expansion of the application field of corundum products and the acceleration of upgrading, the dust collection and recycling materials produced by corundum in my country are also increasing year by year. The current direct stacking will cause serious shelving and waste of resources. Not enough attention was paid. Since gallium is a rare and scattered metal, the annual output is very limited. The traditional landfill method or storage and storage methods for dust collection materials are mainly used, which not only cause waste of resources, but also bring huge hidden dangers to the environment and human beings. Therefore, the recovery of gallium in the dust collection material in the corundum production process through appropriate methods is of great s...

AI Technical Summary

Problems solved by technology

[0002] With the continuous expansion of the application field of corundum products and the acceleration of replacement, the dust collection and recycling materials produced by my country's corundum are also increasing year by year. not getting enough attention

Since gallium is a scattered metal, the annual output is very limited. The treatment methods used for dust collectors are mainly traditional landfill or sealed storage, which not only causes waste of resources, but also brings huge hidden dangers to the environment and human beings.