What is the difference between fused magnesia and large crystalline fused magnesia

Molten magnesia is mainly produced by smelting magnesite ore with a content of more than 47% in electric arc furnace. The chemical indexes of fused magnesia can be divided into 6 items; 1. Magnesium oxide content; 2. Silicon dioxide content; 3. Iron oxide content; 4. Aluminum oxide content; 5. Caustic soda; 6. Body density; The fused magnesia product has high purity, large crystal grain, compact structure, strong slag resistance, and good thermal shock stability. It is an excellent high-temperature electrical insulating material, and also an important raw material for producing high-grade magnesia bricks, magnesia-carbon bricks and amorphous refractory materials. The fused magnesia is mainly used for auxiliary refractory materials such as gunning materials, ramming materials, and special refractory bricks such as flow steel brick, magnesia brick, magnesia-chrome brick, etc, It can also be used as refractory lining on vacuum and non-vacuum induction furnaces and electric arc furnaces. It is an ideal raw material for making magnesium oxide crucibles, furnace liners and various high-temperature bushings

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 metallurgical, building materials, chemical, national defense, medical equipment and other fused magnesia products. The main features of fused magnesia products are complete structure, dense organization, high melting point (up to 2800 ℃), stable chemical properties, high pressure resistance, strong insulation, scouring resistance, corrosion resistance, and is an important raw material for metallurgy, building materials, light industry, furnace lining and bulk materials, as well as steel, cement, glass Non-ferrous metal smelting and other industries are indispensable important refractory materials. Production process of large-crystal fused magnesia: large-crystal fused magnesia is mainly prepared by melting 91% - 92% magnesium oxide and 0 mm - 3 mm magnesium oxide 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.