Method for extracting gallium and germanium from zinc smelting slag

A technology of zinc smelting slag and extraction method, which is applied in the field of extracting gallium and germanium from zinc smelting slag, to achieve the effects of reducing acid consumption, saving alkali consumption and reducing waste water discharge
CN102560133AInactive Publication Date: 2012-07-11BEIJING GENERAL RES INST OF MINING & METALLURGY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
BEIJING GENERAL RES INST OF MINING & METALLURGY
Publication Date
2012-07-11
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a method for extracting gallium and germanium from zinc smelting slag, in particular to a method for wet extraction of gallium and germanium metals from zinc smelting slag. The method is characterized in that: in the extraction process, the zinc smelting slag is subjected to two-stage acid leaching, the gallium is leached out in the first stage, and then the acid leaching slag after the gallium is leached out is subjected to the second-stage acid leaching, so that the germanium is leached out. According to the method, the leaching characteristics of scattered metal enriched slag gallium and germanium and the extraction characteristics of the gallium and the germanium are found in experiments, a process flow that the gallium and the germanium are leached out and extracted by steps to enrich the gallium and the germanium is provided, so that the germanium leaching and extraction form a closed loop, the alkali neutralization work procedure is eliminated, the alkali consumption is eliminated, the acid consumption is reduced, and the wastewater drainage is reduced.
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Description

technical field

[0001] A method for extracting gallium and germanium from zinc smelting slag relates to a method for wet extraction of metal gallium and germanium from zinc smelting slag. Background technique

[0002] Gallium and germanium are rare metals. There are few separate deposits in nature, and most of them are associated with other minerals. Gallium and germanium are mainly found in sphalerite, nepheline, muscovite, spodumene, bauxite and coal mines. In the traditional zinc hydrometallurgy process, more than 98% of gallium and germanium are enriched in neutral leaching or low-acid leaching residue, and the comprehensive recovery value is extremely high. The comprehensive recovery of scattered metals in the zinc smelting process is an important way to obtain gallium and germanium. The comprehensive extraction of gallium and germanium can not only make full use of mineral resources, reduce production costs, improve economic benefits, but also reduce environmental poll...

Claims

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