Everyone knows that industrial salt is inedible, so some people ask, what is industrial salt for? What is the use? To talk about the use of industrial salt, we must first mention its nickname - "the mother of the chemical industry". The main products of the basic chemical industry, such as hydrochloric acid, caustic soda, soda ash, ammonium chloride, chlorine, etc., are mainly made of industrial salt as raw materials produced. Not only that, but industrial salt has great uses in different industries.

1. Application in chemical industry

The chemical industry is the basic industry of the national economy. Three acids (sulfuric acid, hydrochloric acid, nitric acid) and two alkalis (soda ash, caustic soda) are the basic chemical industries, and among them, hydrochloric acid, soda ash, and caustic soda are produced with salt as the main raw material, and each 1 ton of soda ash or caustic soda consumes 1.2 ~1.4 tons of raw salt, in industrialized developed countries, chemical salt generally accounts for more than 90% of the total salt consumption.

2. Application in dye industry

The raw materials commonly used in the dye industry such as caustic soda, soda ash and chlorine are directly produced from salt, while hydrochloric acid, sodium sulfide, hydrosulfite, etc. are chemical products obtained by deep processing of salt; in addition, a large amount of salt is directly consumed. Therefore, the dye industry is one of the industries that is very closely related to the salt industry in addition to the chlor-alkali industry. And almost every step in the dye production process consumes a certain amount of salt.

3. Application in metallurgical industry

Industrial salt is used as chlorinated roasting agent and quenching agent in metallurgical industry, and also as desulfurizing agent and clarifying agent for processing metal ores. Immersion of steel products and steel rolled products in a salt solution can harden the surface and remove the oxide film. Salt chemical products are used in pickling of strip steel and stainless steel, baking auxiliaries such as aluminum smelting and electrolysis of sodium metal, as well as refractory materials in smelting.

4. Application in tanning industry

A large amount of cortex is required. In the process of storage and transportation, in order to prevent or inhibit the erosion of microorganisms, the raw leather needs to undergo antiseptic treatment, so as not to reduce the quality of the leather. The commonly used anti-corrosion method in the tanning industry is the benefit of salt drying. At the same time, it is used as a commonly used catalyst in carburizing chemical heat treatment. In the process of heat treatment, quenching with salt water can also obtain ideal results.

5. Application in petroleum industry

In the process of oil well drilling, in order to protect the integrity of the rock salt layer core, it is necessary to add salt to the mud as a stabilizer, and use the salt chemical product barium sulfate to increase the weight of the drilling mud and act as a regulator. When refining petroleum, in order to remove the water mist in gasoline, salt is used as a dehydrating agent. In the kerosene refining process, the salt is used as a filter layer to remove the impurities. There are also many salt chemical products that are also widely used in the petroleum industry.

The above is the relevant introduction about the use of industrial salt, have you understood it? Hope to help you!