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[Chemical Knowledge]：Production and manufacturing method and process flow of zirconium tetrachloride

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The manufacturing method
of zirconium tetrachloride
1. Introduction

Zirconium tetrachloride (ZrCl4) is an important chemical raw material, widely used in ceramics, electronics, aerospace and other fields. With the continuous development of science and technology, the manufacturing method of zirconium tetrachloride is constantly improved and optimized. This paper will introduce the manufacturing method of zirconium tetrachloride, including raw material preparation, reaction process, post-treatment and so on.

2. Raw Material Preparation

The main raw materials for manufacturing zirconium tetrachloride are zircon (ZrSiO4) and carbon, as well as chlorinating agents (such as chlorine). Zircon is a common zirconium ore, which contains zirconium oxide (ZrO2) and silicon dioxide (SiO2). In order to obtain high purity zirconium tetrachloride, it is necessary to select high quality zircon as raw material.

3. reaction process

1. carbon reduction method

carbon reduction method is a common four zirconium chloride manufacturing method. In this method, zircon is mixed with carbon and then subjected to a reduction reaction at a high temperature to produce zirconium carbide (ZrC). The zirconium carbide then reacts with chlorine to form zirconium tetrachloride. The reaction equation is as follows:

ZrSiO4 2C → ZrC 2SiO2 CO (high temperature)
ZrC 2Cl2 → ZrCl4 C (high temperature)

2. Electrolytic method

Electrolytic method is a more advanced zirconium tetrachloride manufacturing method. In this method, zircon is reacted with sodium hydroxide to form sodium zirconate, and then sodium metal and zirconium tetrachloride are formed by electrolysis of sodium chloride solution. The reaction equation is as follows:

ZrSiO4 +2NaOH → Na2ZrO3 SiO2 + H2O
Na2ZrO3 +4NaCl + 3H2O → 2NaOH + ZrCl4 +4NaCl + H2 (electrolysis)

4. post-treatment
Zirconium tetrachloride produced by the
reaction needs to be post-treated to obtain a high purity product. The post-treatment process includes distillation, condensation, crystallization and other steps to remove impurities and improve product quality. In addition, the production equipment needs to be cleaned and maintained to ensure the smooth progress of the production process.
Precautions for
5.

In the manufacturing process of zirconium tetrachloride, the following matters need to be paid attention to:

1. Control the reaction temperature and time to ensure the smooth progress of the reaction;
2. Select high quality raw materials to improve Product quality;
3. Strengthen the maintenance and cleaning of production equipment to prevent equipment failure and product quality problems;
4. Strengthen safety management in the production process, to prevent the occurrence of accidents.

6. conclusion

zirconium tetrachloride is an important chemical raw material, widely used in various fields. This article introduces the manufacturing method of zirconium tetrachloride, including raw material preparation, reaction process, and post-treatment. In the actual production process, it is necessary to select the appropriate manufacturing method according to the specific situation, and strictly control the production process to ensure product quality and production safety.

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