"Light burning powder" is a product of natural magnesite or brucite lightly burned at about 900 C. It is commonly known as light burning powder. Magnesium oxide is the main chemical composition of light burning powder. Magnesium oxide in general sense refers to magnesium oxide produced by chemical method. Magnesium carbonate or magnesium hydroxide is produced by chemical method using magnesium-containing raw materials, and magnesium oxide is obtained by calcination. Therefore, the so-called magnesia, in general, is the purity, particle size, and other indicators and light-burned powder have significant differences.

Uses: Used in rubber, plastics, wires, cable dyes, paints, glass, ceramics, chemical reagents, medicine, food additives, etc. 1. Metallurgical industry: used for manufacturing refractory materials and adhesives for masonry arm, and as raw materials for manufacturing No. 2 flux and smelting magnesium metal.

2. Chemical industry: Mainly used in the production of various magnesium salts, such as magnesium oxide, magnesium hydroxide, magnesium carbonate, also used as raw materials for antifreeze.

3. Building materials: Made of hard corrosion-resistant magnesia-oxygen cement with magnesite (MgO), it can make marble, bitter earth tile, floor, ceiling, decorative board, fire-proof board, shed bracket, partition board, magnesite well cover, bathtub, doors and windows frame and movable house, etc.

4. Machinery Industry: In daily life, using magnesite can be made into mechanical packing box, triangular cushion edge and furniture, etc., which is a good material for "substituting soil for material".

5. Food industry: Bean curd made from brine (magnesium chloride aqueous solution) is more tender and delicious than that made from stone, and some food additives.

6. Traffic industry: used as road deicing and snow melting agent, the speed of deicing is fast, the corrosiveness of vehicles is small, higher than the effect of sodium chloride. ?

7. Pharmaceutical: Made of magnesium chloride "dried brine" can be used as medicine.

8. Agriculture: It can be used as magnesium fertilizer, potassium magnesium fertilizer and cotton defoliant. Light burning powder: magnesite calcined at 750-1100 temperature is called "light burning". Its product is called light burning magnesia powder. Since magnesite burning decreases by about 50%, the content of MgO in the ore can be almost doubled by light burning. In this sense, light burning is an effective means of MgO enrichment. In addition, light burning is also a preparatory operation for magnesite thermal separation and some heavy separation. Light burning magnesia has high activity and is alive. Ideal raw material for producing high bulk density magnesia.

Light burnt magnesia mainly produces cementitious materials, such as magnesia cement, building materials for insulation and sound insulation, as well as ceramic raw materials. After chemical treatment of light burnt magnesia, a variety of magnesium salts can be made and used for medicine.