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[Chemical Knowledge]：Manufacturing method and process of chlorine salt

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Chlorine salt has important application value in the field of chemical production raw materials, especially in the pharmaceutical, pesticide, dye and other industries. In this paper, the manufacturing method of chlorine salt is introduced in detail, including raw material preparation, reaction process, post-treatment and matters needing attention.

1. Raw Material Preparation

1. Chlorine: Chlorine is the main raw material for the manufacture of chlorine salt, usually industrial grade chlorine, with high purity requirements.
2. Metal salt: The kind of the metal salt depends on the kind of the target chloride salt, such as sodium chloride, potassium chloride and the like.
3. Solvent: As required, water or other organic solvents can be selected as the reaction medium.

2. Reaction Process

The chlorine salt manufacturing process primarily involves the reaction of chlorine gas with an aqueous solution of a metal salt. The following are the specific steps:

1. The metal salt is formulated into a certain concentration of aqueous solution.
2. Under the condition of stirring, slowly introduce chlorine gas to control the reaction speed and avoid local over-concentration leading to side reactions.
3. During the reaction, the pH value of the solution is kept within a suitable range to ensure that the chlorine gas reacts fully with the metal salt.
4. After completion of the reaction, the insoluble matter was removed by filtration to obtain an aqueous chloride salt solution.

3. post-treatment

1. evaporation and concentration: the chloride salt aqueous solution is subjected to evaporation and concentration to obtain a chloride salt concentrate.
2. Crystallization: The concentrated solution was cooled and crystallized to obtain a chloride salt crystal.
3. Centrifugation: The chloride salt crystals were separated from the mother liquor by centrifugation.
4. Drying: The chloride salt crystals are dried to obtain the final chloride salt product.

4. Precautions

1. Chlorine is toxic, and safety operation procedures must be strictly observed during operation to ensure production safety.
2. pH value should be closely controlled during the reaction to avoid by-products.
3. The heating speed should be controlled during the evaporation and concentration process to avoid splashing the solution.
4. The cooling rate should be controlled during the crystallization process to obtain better crystal morphology.

Through the above steps, we can manufacture the required chlorine salt products. In the actual production process, it also needs to be optimized and adjusted according to specific product types and production conditions. In short, the manufacturing process of chlorine salt needs to strictly control the operating conditions of each link to ensure product quality and production safety.

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