Introduction of high purity magnesia and development of high purity magnesia industry

Magnesite magnesite and other magnesite raw materials through shaft kiln, rotary kiln and other high temperature equipment calcining or two-step calcining process to reach the level of sintering products collectively. There are different classifications of magnesite, among which the magnesite fired from natural magnesite is called sintered magnesite. The magnesite which is formed after melting in an arc furnace is called electrofused magnesite. The magnesium oxide obtained from seawater is called seawater magnesia. Magnesia can be divided into electrofused magnesia, medium-grade magnesia, high-purity magnesia and refired magnesia, etc. High-purity magnesite refers to the high-purity magnesite with magnesium oxide content above 96%, which is produced by flotation of natural extra-grade magnesite and calcined by vertical kiln of light burning, fine grinding, pressing ball and ultra-high temperature oil. High purity magnesia is mainly used to produce high purity magnesia brick, direct combination magnesia chrome brick, converter and electric furnace spray material, converter surface repair material, tundish spray material.

China is rich in magnesite resources in the world, with a total reserve of 3 billion tons of ore, ranking first in the world. Thanks to the unique advantages of raw materials, China's high purity magnesite production is given priority to with magnesite stone, low production cost, product quality is stable, has the congenital advantage, at the same time, China is the world's major steel producing countries, have the world refractories market, China has now become the world's largest producer of high purity magnesia, and consumer and high purity magnesia products exporter, the products sell well in Europe, Japan, America, Korea and other parts of the world.

The iron and steel industry is an important downstream end market of high purity magnesia. The development of the iron and steel industry determines the price and market scale of high purity magnesia and plays a decisive role in its development. China's steel production has long been among the top in the world, driving the huge demand for high-purity magnesia, making China the producer and consumer of high-purity magnesia in the world.