Use of magnesium chloride.
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Magnesium chloride, English name is magnesium chloride, chemical formula MgCl2, usually contains six molecules of crystal water, i.e. MgCl2 · 6H2O, which is easy to deliquesce, and will be weathered in dry air and lose crystal water. It is monoclinic crystal, with salty taste and certain corrosiveness. The following is an introduction to the wide application of magnesium chloride:
1. It is an important inorganic raw material in the chemical industry, which is used to produce magnesium carbonate, magnesium hydroxide, magnesium oxide and other magnesium products, and also used as the raw material of antifreeze.
2. In metallurgical industry, it is used to produce metal magnesium (obtained by melting electrolysis), liquid chlorine and high-purity magnesia, etc. It is used to make refractories and adhesives for furnace arms. It is also the raw material for making No. 2 flux and smelting metal magnesium.
3. In the building materials industry, it is an important raw material for the production of light building materials, such as glass fiber tiles, decorative boards, sanitary wares, ceilings, floor tiles, magnesia cement, ventilation pipes, anti-theft well covers, fire doors and windows, fire boards, partition boards, artificial marble and other high-rise building supplies. In the magnesite products, it can be used as high-quality magnesium tiles, high-quality fire boards, magnesium packaging boxes, magnesium decorative boards and light walls Plates, abrasives, stoves, fireworks fixatives, etc.
4. In other fields, it can be used as food additive, protein coagulant, snow melting agent, refrigerant, dustproof agent, refractory, etc. the tofu made by brine (magnesium chloride aqueous solution) is tender and delicious compared with the tofu made by gypsum
5. Mechanical industry: in life, it can be made into mechanical packing box, triangular cushion edge, furniture, etc., which is a good material of "replacing materials with soil".
6. Transportation industry: it is used as road deicing and snowmelting agent, with fast deicing speed and low corrosiveness to vehicles, higher than the effect of sodium chloride.
7. Medicine: "brine dry" made of magnesium chloride can be used as medicine and cathartic.
8. Agriculture: it can be used as magnesium fertilizer, potassium magnesium fertilizer and cotton defoliant.