There are several kinds of fused magnesia

There are three main types of fused magnesia; 1、 Ordinary fused magnesia, II. low silicon and high calcium fused magnesia, III. large crystalline fused magnesia;

1. Ordinary fused magnesia products are mainly made by melting magnesite or calcined magnesia with a content of more than 47% in the arc at high temperature. Periclase has large grain size, compact structure, strong slag resistance and excellent volume stability at high temperature. Main uses of fused magnesia: fused magnesia is a good raw material for high-grade basic bricks, carbon-containing products and unshaped refractory materials.

2. Low-silicon and high-calcium fused magnesia products are mainly made of low-silicon magnesite as raw material by smelting in high temperature electric furnace. Its characteristics are that the ratio of calcium to silicon is greater than 2, the grains are fully developed, and the bulk density of grains is more than 3.50g/cm3. Low-silicon and high-calcium point fused magnesia is mainly used as a good raw material for medium-frequency induction furnace smelting, high-manganese steel, stainless steel, high-gong steel, high-grade basic bricks, carbon-containing products and amorphous refractory materials.

3. Production process of large-crystal fused magnesia: large-crystal fused magnesia is mainly produced by melting selected super-grade natural magnesite or high-quality high-purity light-burned magnesium particles in electric arc furnace. This product has high purity, large crystal grain, compact structure, strong slag resistance, and good thermal shock stability. It is an excellent high-temperature electrical insulation material, and also an important raw material for making high-grade magnesia brick, magnesia-carbon brick and amorphous refractory. It is widely used in metallurgy, chemical industry, national defense, scientific research, aerospace, household electrical components, etc.

Features of large crystalline fused magnesia: high purity, large melting of crystalline particles, high melting point, dense texture; Good thermal shock stability; It has good high-temperature bending strength; It has good slag resistance and corrosion resistance; Strong thermal conductivity and high insulation.

Use of large-crystal fused magnesia product: large-crystal fused magnesia is used as lining refractory for steelmaking furnace, and is a high-quality high-grade basic refractory raw material for manufacturing refractory bricks and unshaped refractory materials; It can also be used as filler to make thermocouples and thermal insulation materials (household appliances, etc.); It can also be used for ceramic raw materials and sintering aids as well as metallurgy, building materials, chemical industry, national defense, medical equipment, etc.