How many types of fused magnesia are there

There are three main types of fused magnesia sand; 1、 Ordinary fused magnesia, 2. Low silicon high calcium fused magnesia, 3. Large crystalline fused magnesia;

1. Ordinary fused magnesia products are mainly made by using magnesite or lightly burned magnesia with a content of over 47% as the main raw material and melting it at high temperature in an electric arc. Magnesite has large grains, dense structure, slag resistance, and high temperature volume stability. The main use of fused magnesia is as a good raw material for high-grade alkaline bricks, carbon containing products, and unshaped refractory materials.

2. The low silicon and high calcium fused magnesia products are mainly made from low silicon magnesite as raw material and melted in a high-temperature electric furnace. Its characteristics are a calcium silicon ratio greater than 2, sufficient grain development, and a particle volume density greater than 3.50g/cm3. Low silicon high calcium point melting magnesia is mainly used as a good raw material for medium frequency induction furnace melting, high manganese steel, stainless steel, high gong steel, high-grade alkaline bricks, carbon containing products, and amorphous refractory materials. Electric fused magnesia manufacturer

3. Production process of large crystalline fused magnesia: Large crystalline fused magnesia is mainly produced by melting selected special grade natural magnesite or high-quality high-purity lightly burned magnesium particles in an electric arc furnace. This product has large crystal grains, dense structure, slag resistance, and good thermal shock stability. It is an excellent high-temperature electrical insulation material and an important raw material for producing magnesia bricks, magnesia carbon bricks, and amorphous refractory materials. Widely used in metallurgy, chemical industry, national defense, scientific research, aerospace, household appliance components, etc.

Characteristics of large crystalline fused magnesia products: large melting of crystalline particles, high point structure, and dense structure; Good thermal shock stability; Has good high-temperature flexural strength; Has good slag resistance and corrosion resistance; Thermal conductivity and height margin.

Application of large crystalline fused magnesia products: Large crystalline fused magnesia is used as a refractory material for the lining of steelmaking furnaces and is a high-quality alkaline refractory raw material for manufacturing refractory bricks and amorphous refractory materials; It can also be used as a filling material for making thermocouples and thermal junction materials (such as household appliances); It can also be used as a ceramic raw material and sintering aid, as well as in metallurgy, building materials, chemical industry, national defense, equipment, etc.