Distribution of magnesia manufacturers

Magnesia is calcined from magnesite, brucite or magnesium hydroxide extracted from seawater at high temperature. It is the general name of the products that magnesite and other magnesia materials reach the sintering process after high temperature treatment. Magnesia produced by calcination with natural magnesite as raw material by one or two step calcination process with high-temperature equipment such as shaft kiln and rotary kiln is called sintered magnesia; The price of concentrate powder, which is made of magnesite and other materials after being melted in the electric arc furnace to the molten state and cooled, is called seawater magnesia.

Magnesia is one of the refractory materials, which is used to manufacture various magnesia bricks, magnesia-alumina bricks, ramming materials, furnace repair materials, etc., and contains many impurities, which is used to pave the steel furnace bottom, etc. High-purity magnesia is produced by flotation purification of natural magnesite ore and calcination in light burning, fine grinding, ball temperature oil shaft kiln. It is an indefinite refractory material for brick making.

The properties of magnesia can be divided into chemical properties and physical properties. The chemical properties of magnesia mainly refer to that magnesia is mainly composed of periclase MgO, periclase is one of the common minerals in cement clinker, and periclase can coexist with the four main minerals C3S, C2S, C3A and C4AF in cement clinker. Therefore, periclase has good corrosion resistance for cement clinker.

Magnesia is a general term for the products that magnesite and other magnesia raw materials are processed to the sintering degree by the shaft kiln, rotary kiln and other high-temperature equipment in a single or two-step calcination process. There are different classifications of magnesia, among which the magnesia fired from natural magnesite is called sintered magnesia; Magnesite and other raw materials are melted in the electric arc furnace to reach the melting state and cooled, which is called fused magnesite; The magnesia extracted from seawater is called seawater magnesia.

Seawater magnesia and sintered magnesia. The production process of high-purity magnesia abroad is advanced and has high purity, but the overall advantage has not been formed due to the high production cost.

The operation of high-purity magnesia market is stable, the downstream demand has not changed for the time being, and the manufacturer's quotation has also remained stable.

Magnesia can be divided into natural magnesia and seawater magnesia or synthetic magnesia. Natural magnesia mainly comes from natural magnesite, but it is difficult to obtain high-purity products due to the quality of raw ore. So far, seawater magnesia has become the main source of magnesia used in industrialized countries. The theoretical content of MgO in magnesite is 47.3%, and the other impurities include CaO, SiO2, iron, etc.