Address: Chenjia village, Dashiqiao, Yingkou, Liaoning
Production process of fused magnesia
The invention relates to a method for smelting high-temperature refractories, in particular to a production process for electric fused magnesia.
Magnesium oxide is magnesia, can be made from magnesite, brucite, dolomite, serpentine, olivine and other minerals. Magnesium oxide can be calcined and decomposed into magnesia with magnesite and brucite as raw materials. It crystallizes differently because of different calcination temperatures. Magnesium oxide calcined at 600-1000 degrees Celsius is called active magnesia. Magnesium oxide calcined at 1400-1800 degrees Celsius is called dead magnesia. The above two kinds of magnesia are also called light magnesia, commonly known as furnace magnesia. .
At present, the production process of fused magnesia is generally using electric furnace for smelting, direct smelting magnesia ore, the shortcomings are large power consumption, and the existing process for each ton of qualified fused magnesia smelting (purity higher than 96.5%) also needs to consume 80 kilograms of carbon fine rods, relevant information ("special refractories", "magnesia technology", "magnesia technology"), The results of High Temperature Refractories show that cubic crystals can be formed from lightweight magnesia heated by arc, that is, heavy magnesia with melting point of 2800 C, or fused magnesia. The magnesia produced by the furnace can be recrystallized by electric furnace melting, and the fused magnesia can be produced.