Method for comprehensively recovering various valuable metals from germanium-containing material by wet process

Abstract

The invention relates to a method for comprehensively recovering various valuable metals from a germanium-containing material by a wet process, belonging to the field of metallurgy of rare metals. The method comprises the following steps: leaching and separating lead slag in the circulation process, recovering germanium dioxide by tannin extract germanium participation, and recovering copper slag and zinc slag from the germanium participation waste liquor. The method provided by the invention can comprehensively and effectively recover valuable elements, such as lead, zinc, copper and germanium, and the technological process is stable and convenient to control; the invention effectively solves the problem of environmental pollution, and the recovery rate of germanium is up to 90% or above.

Description

Method for comprehensive wet recovery of various valuable metals from germanium-containing materials technical field The invention belongs to the field of rare metal metallurgy, and more specifically relates to a method for comprehensively recovering various valuable metals from germanium-containing materials by wet method. Background technique Germanium is a rare precious metal, and there are few separate deposits. Most germanium is distributed in lead-zinc minerals or coal in the form of isomorphism or adsorption. The approximate content is: Ge: 2.5kg / t; Cu: 6%; Zn : 24%; Pb: 33%. Due to the low germanium content and complex composition, it has a serious impact on the enrichment of germanium. The conventional comprehensive recovery of the above-mentioned germanium-containing materials usually adopts the rotary kiln volatilization method or fuming furnace volatilization method to enrich germanium into the dust, and the germanium-containing dust is leached with acid to o...

AI Technical Summary

Problems solved by technology

The technical problem to be solved by the present invention is to propose a method for comprehensively recovering various valuable metals from germanium-containing materials in view of the deficiencies in the prior art; it can comprehensively and effectively recover the valuable elements of lead, zinc, copper and germanium , the process is stable and easy to control; not only effectively solve the problem of environmental pollution, but also the recovery rate of germanium reaches more than 90%

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