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Production method of high-purity germanium dioxide

A germanium dioxide and production method technology, applied in the directions of germanium dioxide, process efficiency improvement, etc., can solve the problems of limited output, equipment corrosion, high production labor intensity, etc., achieve good effect, improve freezing efficiency, and reduce work intensity Effect

Inactive Publication Date: 2012-07-04
BEIJING GUOJING INFRARED OPTICAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The object of the invention is to aim at present high-purity GeO 2 Problems such as severe equipment corrosion, limited output, and high labor intensity in production have been technically transformed to provide a method for preparing high-purity GeO with germanium-containing raw materials. 2 production process

Method used

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  • Production method of high-purity germanium dioxide

Examples

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Embodiment 1

[0027] (1) Roasting treatment of germanium-containing waste. After sampling and testing the germanium-containing waste, determine the quality of soda ash added according to the test results of the germanium content, put the germanium crystal waste and soda ash into a ball mill according to 1:1.5 (mass ratio) for ball milling, and when the germanium crystal waste and soda ash are fully mixed Put the mixture of the two into a roasting furnace for high-temperature roasting, control the roasting temperature at 550°C and the roasting time for 6 hours, so that the metal germanium is transformed into acid-soluble germanate, which is convenient for the next step of processing;

[0028] (2) Chlorination distillation of germanium-containing raw materials. Add the calcined germanium-containing raw material and industrial hydrochloric acid into the distillation kettle at a ratio of 1:4, and add concentrated sulfuric acid and ferric chloride with a concentration of 93% to increase the conc...

Embodiment 2

[0039] (1) Roasting treatment of germanium-containing waste. After the germanium-containing waste is sampled and detected, the quality of soda ash added is determined according to the detection result of the germanium content, and the germanium crystal waste and soda ash are put into a ball mill for ball milling according to a mass ratio of about 1:2. When the germanium crystal waste and soda ash are fully mixed, the The mixture of the two is put into a roasting furnace for high-temperature roasting, and the roasting temperature is controlled at 600°C and the roasting time is 5 hours, so that the metal germanium is transformed into acid-soluble germanate, which is convenient for the next step of processing;

[0040] (2) Chlorination distillation of germanium-containing raw materials. Add the roasted germanium-containing raw material and industrial hydrochloric acid into the distillation kettle at a solid-to-liquid ratio of 1:8, and add concentrated sulfuric acid and ferric chl...

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Abstract

The invention relates to a production method of high-purity germanium dioxide, which comprises the following steps: 1) detecting a germanium-containing waste material, and roasting; 2) carrying out chloridizing distillation; redistilling; purifying by rectifying to obtain high-purity GeCl4; 3) hydrolyzing the GeCl4 to prepare GeO2; and 4) washing the hydrolysate, carrying out centrifugal separation, drying with microwaves, and packaging. The invention has the advantages of reasonable technique, high productivity and higher yield, and can lower the labor intensity of workers.

Description

technical field [0001] The invention relates to a method for extracting germanium from germanium-containing raw materials to produce high-purity germanium dioxide Background technique [0002] Germanium is a rare dispersed metal, the content in the earth's crust is only 4×10 -4 %, mainly occurs in non-ferrous metal ores and coal mines, except for very few germanium ores, there is almost no single germanium ore. The raw materials for extracting germanium mainly include germanium enrichment in various metal smelting processes, germanium-containing coal combustion products and germanium processing waste. [0003] Germanium dioxide is a solid white powder with the chemical formula GeO 2 , molecular weight 104.59. Solubility in water at room temperature is 4g / L, does not react with water, can be dissolved in concentrated hydrochloric acid to form germanium tetrachloride, and can also be dissolved in strong alkali solution to form germanate. High-purity GeO 2 Mainly composed ...

Claims

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Application Information

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IPC IPC(8): C22B41/00C01G17/02
CPCY02P10/20
Inventor 袁琴王铁艳武鑫萍莫杰刘福财毛威
Owner BEIJING GUOJING INFRARED OPTICAL TECH
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