The mid -range magnesium refractory raw material industry is a typical resource -based industry.In the 1980s, since the reform and opening up of China, due to the rapid increase in demand for magnesium raw materials, the entrance threshold for primary raw materials was low, resulting in the reasonable development of diamond magnesium ore.Due to economic reasons, the price of magnesium mines is about 5 times that of tertiary mines.Mine mining is extensive, the phenomenon of wealth and abandon poverty is serious, causing great waste of resources, and more serious is the disorders of the collection.It may be scattered and mined, and several large raw materials bases are constructed.The magnesium refractory raw material industry is a typical resource -based industry.
Since the reform and opening up of China, due to the rapid increase in demand for magnesium raw materials, the entrance threshold for primary raw material processing is low, which has severely damaged the reasonable development of diamond magnesium ore. The high -grade natural magnesium ore, light -fired magnesium oxide powder, or other magnesium -containing materials are raw materials. After melting in the arc furnace, it is cooled naturally, so that the square magnesium crystals will grow up from the melt. After cooling, remove the latch on the large block, and the melting block is electric magnesium. Burning material can be returned to the arc furnace.
After the selection grading, it is crushed to the granularity required by the market. The characteristics of large crystal electric melt magnesium sand products: high purity, crystal melting, high knotting, and dense structure; good thermal shock stability; good high temperature resistance strength; good slag resistance and corrosion resistance; heat conduction; heat conduction Strong performance and height insulation. Use high -temperature equipment such as vertical kiln and rotary kiln once or two -step burning process, and the burning magnesium sand burned by natural diamond magnesium ore as raw materials is called sintering magnesium sand; When the magnesium is burned at 1800 ° C, the carbon dioxide is fully renewed. Magnesium oxide forms a magnesium stone dense block, which is called heavy -sized magnesium. This kind of heavy magnesium has a high fire resistance.
Its main ingredients are magnesium oxide, and natural -grade diamond magnesium ore is made of flotation, light -burning, fine grinding, high -pressure pressure balls, and ultra -high temperature oil vertical kiln. Melons in the arc furnace. This product has high purity, large crystalline grains, dense structures, strong resistance to slag, and good thermal shock stability. It is an excellent high -temperature electrical insulation material. It is also important for making high -grade magnesium bricks, magnesium carbon bricks and irregular refractory resistance materials. raw material. Widely used in metallurgical, chemical, national defense, scientific research, aerospace and aviation, household appliances, etc.