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

A technology for valuable metals and materials, which is applied in the field of wet comprehensive recovery of various valuable metals, can solve environmental pollution and other problems, and achieve the effects of environmental friendliness, simple operation process, and prevention of GeO loss

Active Publication Date: 2012-11-21
郴州雄风环保科技有限公司
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Problems solved by technology

[0004] 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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  • Method for comprehensively recovering various valuable metals from germanium-containing material by wet process

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Embodiment Construction

[0028] The approximate content of valuable metals in the materials we deal with is: Ge: 2.5kg / t, Cu: 6%, Zn: 24%, Pb: 33%, and the specific content of the experiment is: Ge: 2456g / t, Cu: 6.2%, Zn : 24.6%, Pb: 33.4% material 1kg for experiments; from the germanium-containing material wet comprehensive recovery of various valuable metals, the method includes leaching and separation of lead slag in the cycle, germanium tannin sinking to recover germanium dioxide, germanium sinking The process of recycling copper slag and zinc slag from waste liquid; the specific process flow is shown in the attached drawing:

[0029] 1) Dipping in circulation to separate lead slag

[0030] 1) a) Take 500g of material for medium acid leaching, mix germanium-containing material and sulfuric acid solution at a liquid-solid ratio of 3:1, mix and react for 1-3h, control the end point pH=2.5, and react at a temperature of 95°C; filter to obtain 245g of filter residue, medium 1500mL of immersion soluti...

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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 slagand 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

technical field [0001] 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 [0002] 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. [0003] 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 obtain a germanium-containing leachate. The most typical treatment of this leach...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B41/00C22B3/08C22B3/46C22B7/00
CPCY02P10/20
Inventor 谭雄玉向纪元曹孝义
Owner 郴州雄风环保科技有限公司
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