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[Chemical Knowledge]：What are the upstream raw materials of raw salt? What do the downstream products contain?

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Raw salt plays an important role in the field of raw materials for chemical production, and its upstream and downstream related products are extensive. This article will discuss in detail the upstream and downstream related products of raw salt, including the main production process, use and role in industrial development.

1. of crude salt upstream product

1. Brine: The main upstream raw material of crude salt is brine, which is rich in sodium chloride. Raw salt can be obtained through evaporation, crystallization and other processes.
2. Rock salt: Rock salt is another source of raw salt, which can be obtained by mining rock salt deposits and then processing them.

2. the downstream associated products of raw salt

1. Caustic soda: Raw salt is an important raw material for the production of caustic soda, which can be obtained by electrolysis of aqueous sodium chloride solution. Caustic soda is widely used in chemical industry, papermaking, printing and dyeing, food and other fields.
2. Soda ash: Soda ash is an important inorganic chemical raw material, widely used in glass, soap, detergent, food and other industries. Raw salt can be used as one of the raw materials for the production of soda ash.
3. Chlorine gas: In the process of producing raw salt, chlorine gas can be produced by-product. Chlorine is an important chemical raw material, which can be used to produce PVC, MDI and other chemical products.
4. Hydrochloric acid: Hydrochloric acid is prepared by the reaction of crude salt and hydrogen. It is an important inorganic chemical raw material and is widely used in metal processing, food, medicine and other fields.

3. production process and use

1. production process: the production of raw salt mainly adopts evaporation crystallization method, the brine or rock salt in the water evaporation, sodium chloride crystallization precipitation.
2. Uses: Raw salt is mainly used in chemical production, and can be used as raw materials for the production of caustic soda, soda ash, chlorine, hydrochloric acid and other chemical products. In addition, raw salt is also widely used in food, medicine, printing and dyeing, leather and other fields. The role of

4. in industrial development

raw salt as an important chemical raw material plays an important role in the development of chemical industry. With the continuous development of science and technology, the production process and technology of raw salt are also constantly improving, which improves the quality and output of raw salt and provides a strong guarantee for the development of downstream industries. At the same time, with the improvement of people's awareness of environmental protection, the environmental protection requirements in the production process of raw salt are also constantly improving, which promotes the development of the industry in the direction of green and low carbon.

5. market prospects and trends

With the globalization of the economy and the continuous progress of technology, the raw salt market is facing new opportunities and challenges. In the future, the raw salt market will continue to maintain steady growth. At the same time, with the rapid development of new energy, new materials and other fields, the application fields of raw salt will continue to expand. In addition, with the strengthening of environmental protection policies and technological innovation, the raw salt production process will be more environmentally friendly and efficient, and promote the sustainable development of the industry.

In short, raw salt has an important position in the field of raw materials for chemical production, and its upstream and downstream related products are extensive, which plays a key role in the development of the chemical industry. With the continuous change and development of the market, the raw salt industry will continue to maintain steady growth and usher in a broader space for development.

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