Novel extraction process method for purifying germanium tetrachloride

A technology of germanium tetrachloride and process method, applied in the direction of germanium halide, etc., can solve the problems of good purification and purification effect, achieve good mixing effect, meet environmental protection requirements, and high degree of automation

Inactive Publication Date: 2010-11-24
四川高锗再生资源有限公司
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In the process of applying the extraction method, a large number of practices and experiments have proved that this method n

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  • Novel extraction process method for purifying germanium tetrachloride
  • Novel extraction process method for purifying germanium tetrachloride
  • Novel extraction process method for purifying germanium tetrachloride

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[0013] chemical principle

[0014] Due to the complex structure of the raw material and the production of the distillation process does not have the ability to finely remove impurities, the crude germanium tetrachloride produced contains a considerable part of AsCl 3 Mainly a variety of impurities. This method to remove GeCl 4 AsCl in 3 etc. as the main purpose, based on GeCl 4 and AsCl 3 Different solubility in concentrated hydrochloric acid and mist elution increase the mixing and contact of each fraction with hydrochloric acid to enhance the extraction effect.

[0015] GeCl 4 The solubility in concentrated hydrochloric acid is not large, and when it reaches saturation, it will separate with hydrochloric acid. AsCl 3 It has high solubility in concentrated hydrochloric acid, mainly enters the hydrochloric acid phase, and only a small amount remains in GeCl 4 middle. Such as figure 1 is GeCl 4 and AsCl 3 The solubility in concentrated hydrochloric acid varies with ...

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Abstract

The invention discloses a novel extraction process method for purifying germanium tetrachloride. Purification is the subject of the germanium metallurgical industry. The method is combined with an extraction theory, and a novel germanium tetrachloride purification process is researched through experiments. The dissolving situations of substances such as AsCl3 and the like in hydrochloric acid and GeCl4 differ greatly, and the aim of purifying GeCl4 can be fulfilled by extracting substances such as AsCl3 and the like in crude GeCl4 by taking the hydrochloric acid as an extracting agent. Conventional extraction is used for extracting active ingredients in a mixture. In recent years, an extraction method is used for purification. Full and effective mixing of the extracting agent and an extracted substance is a relatively key problem. High-speed spray is an effective method which can fully mix the extracting agent and the crude GeCl4. The experiments prove that the quantity of low-resistance germanium ingots can be reduced greatly by adding the process into the conventional technical condition, so that product percent of pass is increased to 90 percent.

Description

Technical field: [0001] The invention relates to a novel extraction process for purifying germanium tetrachloride. Background technique: [0002] With the development of modern science and technology, germanium is widely used in military affairs, medicine, health care, chemical industry, etc., especially in recent years, with the rapid development of optical fiber and solar energy industry, high-purity fiber-grade germanium tetrachloride has become more and more popular. attention. This puts forward higher requirements for the purification and production of high-purity intermediate germanium tetrachloride. Extraction, as a chemical purification method developed in the 1970s and 1980s, was first applied to the treatment of various low-grade ores. The purpose is to make the useful components that need to be recovered in low-grade ores enter the liquid phase to achieve purpose of separation. In the process of applying the extraction method, a large number of practices and ex...

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Application Information

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IPC IPC(8): C01G17/04
Inventor 刘阅周加军汪洋
Owner 四川高锗再生资源有限公司
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