The difference between calcined magnesia and large crystal fused magnesia

The calcined magnesia is mainly made of 46% magnesite ore, which is calcined at 1600 ℃ - 1800 ℃ through a layer of coal and a layer of magnesite in the iron sheet kiln. The production process is that two tons of ore produce one ton of calcined magnesia, which is divided into three grades; 1、 The calcined magnesia in front of the kiln is mainly red brown. The calcined magnesia is characterized by high fire resistance.

Purposes of reburning magnesia products: the products are used for magnesia bricks, magnesia alumina bricks, magnesia chrome bricks, gunning materials, castables, dry materials, coating materials, furnace repairing materials, asphalt, casting, fire protection and insulation materials, flux accessories, electrical steelmaking furnaces, heating furnaces, rotary furnaces, steelmaking, electric furnace bottoms and ramming furnace linings.

Large crystal fused magnesia is mainly made by melting 0-3 grains of magnesia with content above 90% 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 an important raw material for making high-grade magnesia bricks, magnesia carbon bricks, and unshaped refractories. It is widely used in metallurgy, chemical industry, national defense, scientific research, aerospace, household electrical components, etc.

Characteristics of large crystal fused magnesia products: high purity, large melting of crystalline particles, high point structure, dense structure; Good thermal shock stability; 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 products: large crystal fused magnesia is used as lining refractory of steelmaking furnace, and is a high-quality high-grade alkaline refractory material for making refractory bricks and unshaped refractories; 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.