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[Chemical Knowledge]：Manufacturing method and process of barium chloride

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The manufacturing method
of barium chloride
1. Introduction

barium chloride is an important inorganic salt chemical products, widely used in glass, ceramics, electronics, medicine, chemical and other fields. Due to its unique physical and chemical properties, the production method of barium chloride has attracted much attention. This paper introduces the manufacturing method of barium chloride in detail, including raw material preparation, reaction process, post-treatment and product quality control.

2. Raw Material Preparation

The manufacture of barium chloride mainly requires chlorides and barium salts as raw materials. Commonly used chlorides are ammonium chloride, hydrochloric acid, etc., barium salts are mainly barium carbonate, barium sulfate, etc. In order to ensure the purity and quality of the product, strict screening and quality control of raw materials are required.

3. reaction process

1. Neutralization method

mixing barium carbonate and hydrochloric acid according to a certain proportion to carry out neutralization reaction to generate barium chloride and carbon dioxide gas:

BaCO3 2HCl → BaCl2 CO2 ↑ H2O

pH value needs to be controlled during the reaction process to ensure complete reaction and avoid corrosion of equipment by over acid and over alkali.

2. double decomposition method

barium sulfate and ammonium chloride are mixed according to a certain proportion to carry out the double decomposition reaction to generate barium chloride and ammonium sulfate:

BaSO4 2NH4Cl → BaCl2 (NH4)2SO4

This method needs to control the reaction temperature and time to ensure the smooth progress of the reaction.

4. post-treatment
After the
reaction is completed, the product needs to be post-treated, including filtering, washing, drying and other steps, to obtain a pure barium chloride product. In the filtration and washing process, it is necessary to remove unreacted raw materials, by-products and impurities to ensure product quality. Temperature and time should be controlled during the drying process to avoid product agglomeration and decomposition.

5. product quality control

In order to ensure the quality of barium chloride products, it is necessary to detect the purity, particle size, color and other indicators of the product. Common detection methods include chemical analysis, spectral analysis, particle size analysis, etc. For unqualified products, rework or scrap is required to ensure product quality.

6. environmental protection and safety

in the production process of barium chloride, will produce a certain amount of waste gas, waste water and solid waste. In order to ensure environmental protection and safety, these wastes need to be properly disposed. Waste gas can be treated by absorption, adsorption and other methods, waste water can be purified by chemical precipitation, biological treatment and other methods, and solid waste can be used for resource utilization or safe landfill. In addition, in the production process, it is necessary to strictly abide by the safety operation procedures to ensure the safety of employees and equipment.

7. Conclusion The manufacturing method of

barium chloride mainly includes raw material preparation, reaction process, post-treatment and product quality control. In the actual production process, it is necessary to select the appropriate production method according to the specific situation, and strictly control the process parameters to ensure product quality and environmental protection and safety. With the continuous progress of science and technology, the manufacturing method of barium chloride will be continuously improved and optimized, which will provide strong support for improving product quality and reducing production costs.

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