Technological method for recycling germanium from corrosive liquid containing germanium and fluoride

A process method and technology of corrosive liquid, applied in the field of germanium recovery, can solve the problems of corroding distillation and rectification equipment, high cost of germanium recovery, difficult treatment, etc., and achieve the effect of meeting production process requirements, solving recovery problems, and simple steps

Active Publication Date: 2017-06-30
YUNNAN LINCANG XINYUAN GERMANIUM IND +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] What the present invention is to solve is that the existing high fluorine-containing and germanium-containing corrosive solution will corrode the distillation and rectification equipment, resulting in difficult treatment and high germanium recovery cost. The process of recovering germanium by the method of removing fluorine from fluorine and silicon dioxide

Method used

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Examples

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Effect test

Embodiment 1

[0017] Example 1: A process for recovering germanium from a germanium-containing and fluorine-containing corrosion solution, using boric acid and silicon dioxide, heating and volatilization, removing fluorine and precipitating and enriching germanium to recover germanium metal. The specific process steps are as follows:

[0018] Step 1: Take 500mL of germanium-containing and fluorine-containing corrosion solution, put it into a polytetrafluoroethylene container, measure the fluorine content and germanium content contained in the corrosion to be 45.80g / L and 26.45 g / L, respectively, and calculate the fluorine mass to be 22.9 g, the quality of germanium is 13.225g, add 45.80g of boric acid and 4.58g of silicon dioxide, mix and stir evenly, connect the polytetrafluoroethylene container to the waste gas receiving device, and the waste gas receiving device is equipped with 200mL dilute Waste gas receiving liquid of hydrochloric acid solution;

[0019] The second step is to heat the...

Embodiment 2

[0023] Embodiment 2: A kind of process method of reclaiming germanium from germanium-containing fluorine-containing corrosion solution, adopts adding boric acid and silicon dioxide, heat volatilization, remove fluorine and precipitate and enrich germanium to reclaim germanium metal, specific process steps are as follows:

[0024] Step 1: Take 500mL germanium-containing and fluorine-containing corrosion solution, put it into a polytetrafluoroethylene container, measure the fluorine content and germanium content contained in the corrosion to be 51.83 g / L and 28.99 g / L respectively, and calculate the fluorine mass to be 25.915 g, the mass of germanium is 14.495g, add 38.873g of boric acid and 7.77g of silicon dioxide, mix and stir evenly, connect the polytetrafluoroethylene container to the waste gas receiving device, and the waste gas receiving device is equipped with 200mL dilute solution with a concentration of 2 mol / L Waste gas receiving liquid of hydrochloric acid solution; ...

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Abstract

The invention discloses a technological method for recycling germanium from corrosive liquid containing germanium and fluoride and relates to the technical field of hydrometallurgy, in particular to a technological method for recycling germanium from corrosive liquid containing germanium and fluoride through the methods of boric acid germanium precipitation for fluoride removal and fluoride removal through silicon dioxide. The technological method for recycling germanium from corrosive liquid containing germanium and fluoride is characterized in that boric acid and silicon dioxide are added at the same time, heating and volatilization are carried out, fluoride is removed, germanium is precipitated and enriched, and therefore germanium metal is recycled. According to the technological method, the fluoride removal rate can reach 78% or above, the fluoride content of slag containing germanium and residual liquid which are finally transferred into the chloridizing distillation step is smaller than 0.05%, the germanium slag grade obtained through precipitation can reach 25% or above, the germanium recycling rate before chloridizing distillation is carried out can reach 95% or above, the loss rate of germanium metal is smaller than 1.2% in the whole fluoride removal process, and some supernatant liquid waste obtained after fluoride removal is subjected to recycle recovery secondary germanium precipitation treatment. When chloridizing distillation is carried out on slag containing germanium and residual liquid, the germanium distil-off rate can reach 98% or above, and production technological requirements can be met.

Description

technical field [0001] The invention relates to the technical field of hydrometallurgy, in particular to a method for recovering germanium from a germanium-containing and fluorine-containing corrosion solution by adopting boric acid precipitation of germanium to remove fluorine and silicon dioxide to remove fluorine. process method. Background technique [0002] Germanium is a rare and scattered element, which plays an important role in national defense, military affairs and modern science and technology. Germanium is used for optical fiber communication, germanium for infrared optics, germanium for electronic industry, germanium for medical and health products, germanium for superconducting materials, germanium for optical power supply etc. are all important uses of germanium in various fields. However, germanium resources are limited, and the amount of germanium resources that can be mined as germanium mines is even less. Therefore, the germanium waste and waste liquid ge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B7/00C22B41/00
CPCC22B7/006C22B41/00Y02P10/20
Inventor 普世坤朱知国窦辉李璇薛丹吴王昌李正美滕文谢高杨再磊
Owner YUNNAN LINCANG XINYUAN GERMANIUM IND
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