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Germanium recovering method

A weakly acidic, raw material technology, applied in the field of metallurgy, can solve the problems of waste of available resources, obtaining germanium, etc.

Active Publication Date: 2004-09-08
YANGZHOU NINGDA NOBLE METAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The residue after above-mentioned two kinds of methods reclaims is called low-grade weakly acidic germanium material, and its germanium content is lower than 0.5%; There is technology for recycling, so recycling can only be abandoned; this will cause waste of available resources

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0014] The production equipment is a 500-liter mortar mixer and a roasting furnace. Several cloth bags are connected to the exhaust duct of the roasting furnace. Take 500 kg of low-grade weakly acidic germanium materials with a pH of about 2 and other raw materials that meet the production ratio for recycling. Production, its production steps are as follows:

[0015] 1. Low-acid slag neutralization conversion operation

[0016] (1) According to the weight proportioning ratio, get low-grade weakly acidic germanium material: white coal powder: the raw material of sawdust=100: 50: 20, add low-grade weakly acidic germanium material and appropriate amount of clear water earlier in the mortar mixer of 500 liters and stir to form Paste, add a certain amount of lime slurry, adjust PH = 8 ~ 9;

[0017] (2) After fully stirring evenly, add sawdust and coal powder gradually;

[0018] (3) stop stirring after half an hour;

[0019] (4) The mixed and neutralized material has a high moist...

Embodiment 2

[0030] The production equipment is one 500-liter mortar mixer, one roasting furnace, and one set of distillation device. There are several dust-collecting cloth bags connected to the exhaust duct of the roasting furnace. The following production steps produce:

[0031] 1. Neutralization and transformation operation of low-grade acidic germanium slag

[0032] (1) According to the weight proportioning ratio, the low-grade weakly acidic germanium material: white coal powder: sawdust = 100: 50: 20 raw materials is first added in a 500-liter mortar mixer and stirred into a low-grade weakly acidic germanium material and an appropriate amount of clear water. paste, add a certain amount of lime slurry, and adjust the pH to 8-9;

[0033] (2) After fully stirring evenly, add sawdust and coal powder gradually;

[0034] (3) stop stirring after half an hour;

[0035] (4) Pour out the mixed and neutralized material, spread it out and dry it in the sun to make a block raw material with a ...

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Abstract

The present invention is germanium recovering method in metallurgical technology. Low-grade weak acid germanium material is first neutralized and converted via adding white coal powder, lime slurry, wood dust and water to regulate pH to 8-9, and stoved or wind dried to produce lumpy material; the lumpy material is roasted in furnace with coke and white coal to volatilize and reduce germanium compound; and the germanium containing smoke and dust is cooled in the flue and collected in smoke and dust collector to obtain the mixture with relatively high germanium content. The method of the present invention may be applied in recovering germanium from low-grade weak acid germanium material with germanium content below 0.5 %, and the collected smoke and dust has germanium content increased to 15-20 %.

Description

technical field [0001] The invention relates to a method for recovering germanium, which belongs to the technical field of metallurgy. Background technique [0002] At present, during the processing of optical fiber cables, there will be a corner abrasive containing germanium, silicon, etc., which is called optical fiber germanium material, and its germanium content is generally 5% to 10%. Germanium has the value of recycling. In the prior art, the method of using optical fiber germanium material to recycle germanium adopts wet acid leaching, and then absorbs it by the traditional production process of tannin sinking germanium. During production, the optical fiber germanium material is first mixed with hydrogen Soak hydrofluoric acid and sulfuric acid together, heat to 85-95°C, soak for 2-4 hours, and then cool to 40°C, filter out impurities, take the filtered solution and absorb germanium with tannin dissolved in boiling water. The precipitate in the solution can be filter...

Claims

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Application Information

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IPC IPC(8): C22B7/00C22B41/00
CPCY02P10/20
Inventor 樊红杰
Owner YANGZHOU NINGDA NOBLE METAL CO LTD
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