Uses: used for making magnesium, disinfectant, frozen brine, ceramics, and for filling fabric, paper making, etc. The solution mixed with magnesium oxide can become a hard and wear-resistant magnesium cement. 1. It is an important inorganic raw material in the chemical industry, used for the production of magnesium carbonate, magnesium hydroxide, magnesium oxide and other magnesium products, and also used as raw materials for antifreeze, etc. 2, in the metallurgical industry for the production of metal magnesium, high purity magnesia, etc. 3. In the building materials industry, it is an important raw material for the production of light building materials such as glass fiber tile, decorative board, sanitary ware, ceiling, floor tile, magnesium oxygen cement, ventilation pipe, anti-theft manhole cover, fireproof doors and Windows, fireproof board, partition board, and the production of artificial marble and other high-rise building supplies. In magnesite products can do high quality magnesium tile, high quality fireproof board, magnesium packing box, magnesium decoration board, light wall board, grinding tools, stoves, fireworks primer agent, etc. 4. In other fields, it can be used as food additive, protein coagulant, snow melting agent, refrigerant, dustproof agent, refractory material, etc. 5· Metallurgical industry: used for manufacturing refractory materials and the adhesive of building furnace arms, and is the raw material for manufacturing No.2 flux and smelting magnesium metal.