黑龙江What are the types of magnesia?

Magnesia has high purity, large crystalline particles, and dense structure. It is a high-quality high-temperature electrical insulating material. In 97, fused magnesia, what are the types of magnesia? Which one is better, Pisha

1、 The product with a content of 90%, 91%, and 92% of calcined magnesia is sintered from magnesite in a high-temperature shaft kiln. The content of MgO is high, usually between 90 and 93%. It is the raw material for producing ordinary magnesia bricks and amorphous refractory materials.

2、 The medium grade magnesia content of 94% and 95% is selected from super grade and first grade magnesite ores, which are made by light burning, fine grinding, ball pressing, and high-temperature shaft kiln sintering. Magnesia has low impurity content, high bulk density, and good slag resistance. Suitable for manufacturing medium grade magnesia bricks or magnesia based amorphous refractory materials.

3、 The product with a high purity magnesia content of 97% is made of high-grade magnesite ore through light burning, fine grinding, dry ball pressing, and ultra-high temperature oil shaft kiln sintering. The MgO content is greater than 97%, the impurity content is low, and the crystals form direct bonding, with a dense structure. It is an ideal raw material for producing high-grade alkaline bricks.

4、 The product with a content of 98% fused magnesia is made by melting super grade magnesite or light burned magnesia in an electric arc furnace at high temperature. Periclase has large grain size, dense structure, strong slag resistance, and excellent high-temperature volume stability. It is a good raw material for advanced alkaline bricks, carbon containing products, and amorphous refractory materials.

5、 Light burned magnesia is produced by calcining magnesite in a reverberatory kiln, with a high Mg0 content and strong chemical activity. It is a raw material for the production of high-quality magnesia and synthetic spinel sand by two-step calcination, and can be used to manufacture magnesia cement. It is also an important raw material for ceramics, building materials, and chemical industries.