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Technological method for purifying and preparing high pure germanium tetrachloride and removing organic impurities

A technology of high-purity germanium tetrachloride and a process method, applied in the field of hydrometallurgy, can solve the problem that the infrared transmittance of the product cannot meet the standard requirements, and achieve the effects of saving production cost input, improving quality and quality, and efficiently purifying

Active Publication Date: 2017-05-31
YUNNAN LINCANG XINYUAN GERMANIUM IND +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the fact that the infrared transmittance of the product of the existing method for purifying and preparing high-purity germanium tetrachloride cannot meet the standard requirements, the present invention proposes a process for removing organic impurities and purifying to prepare high-purity germanium tetrachloride

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  • Technological method for purifying and preparing high pure germanium tetrachloride and removing organic impurities

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Embodiment 1

[0020] Embodiment 1: this method is the processing method of producing high-purity germanium tetrachloride for the first time, and implements according to the following steps:

[0021] (1) Initial steaming of crude germanium tetrachloride and concentrated sulfuric acid: take a certain amount of crude germanium tetrachloride produced by chlorination and distillation of germanium concentrate, transfer it to a still, and add analytically pure concentrated sulfuric acid for heating digestion and initial steaming, The dosage of concentrated sulfuric acid is 0.4 times the volume of crude germanium tetrachloride, the distillation temperature is 80-90 °C, and the distillation time is 2.2 h;

[0022] (2) Chlorine gas is passed for 2 times of re-steaming: the germanium tetrachloride produced by the initial steaming is transferred to the double-steam distillation still, and analytically pure hydrochloric acid is added and chlorine gas is introduced for one-time heating and re-steaming, an...

Embodiment 2

[0026] Embodiment 2: this method is a continuous production high-purity germanium tetrachloride process method, and is implemented according to the following steps:

[0027] (1) Initial steaming of crude germanium tetrachloride and concentrated sulfuric acid: take a certain amount of crude germanium tetrachloride produced by chlorination and distillation of germanium concentrate, transfer it to a still, and add concentrated sulfuric acid (concentrated sulfuric acid ②) for heating and digestion Initial steaming, distillation temperature 80-90 ℃, distillation time 2.5 h;

[0028] (2) Chlorine gas is passed for 2 times of re-steaming: the germanium tetrachloride produced by the initial steaming is transferred to the double-steam distillation still, and analytically pure hydrochloric acid is added and chlorine gas is introduced for one-time heating and re-steaming, and the amount of analytically pure hydrochloric acid added is: The volume of germanium tetrachloride is 1.2 times, t...

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Abstract

The invention relates to the technical field of hydrometallurgy, in particular to a technological method for purifying and preparing high pure germanium tetrachloride and removing organic impurities. The technological method is implemented according to the following steps: adding crude germanium tetrachloride, produced by carrying out chloridizing distillation on germanium concentrate, into concentrated sulfuric acid, and carrying out predistillation while heating; adding analytically pure hydrochloric acid into germanium tetrachloride produced by the predistillation, introducing chlorine, and carrying out primary re-steaming; carrying out secondary re-steaming on the germanium tetrachloride produced by the primary re-steaming by repeating the step (2) ; adding concentrated sulfuric acid into germanium tetrachloride produced by the secondary re-steaming, and then carrying out secondary digestion distillation; transferring germanium tetrachloride produced by the secondary digestion distillation, adding analytically pure concentrated sulfuric acid into the transferred germanium tetrachloride, heating and purifying by rectification. The method is used to realize the aim of further removing organic impurities while efficiently purifying the germanium tetrachloride, and solve the problems that products of a method, which takes germanium-containing lignite as a raw material and adopts the conventional production technology to prepare the high pure germanium tetrachloride, are not qualified, and the like.

Description

technical field [0001] The invention relates to the technical field of hydrometallurgy, in particular to a process method for removing organic impurities and purifying to prepare high-purity germanium tetrachloride. Background technique [0002] Optical fiber communication has become one of the main pillars of the modern communication era. The application of fiber grade germanium tetrachloride in the production of optical fibers, replacing silicon with germanium not only expands the wavelength range of transmitted light, but also further reduces the loss of light in the transmission process. Increase the transmission distance of the signal. The purity of germanium tetrachloride directly affects the quality of the optical fiber and the transmission of optical signals. The quality of high-purity germanium tetrachloride is mainly judged by the content of metal impurities and the infrared transmittance. The non-ferrous metal industry standard (YS / T 13-2007) divides high-purity...

Claims

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Application Information

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IPC IPC(8): C01G17/04
CPCC01G17/04C01P2002/82C01P2006/80
Inventor 柳廷龙刘汉保许金斌徐云江杨再垒普世坤杨正国
Owner YUNNAN LINCANG XINYUAN GERMANIUM IND
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