Electric fused magnesia is primarily produced by smelting magnesite ore with a content of over 47% in an electric arc furnace. The chemical objectives of fused magnesia can be divided into six major 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 particles, fine structure, strong slag resistance, and good thermal shock stability. It is an excellent high-temperature electrical insulation material, and is also an important material for manufacturing high-grade magnesia bricks, magnesia carbon bricks, and amorphous refractory materials.
The main characteristics of fused magnesia products: fused magnesia products are characterized by sound structure, fine organization, high melting point (up to 2800 ℃), stable chemical functions, high compressive strength, strong insulation, erosion resistance, and corrosion resistance. They are important materials for metallurgy, building materials, light industry, furnace lining, and bulk materials, and are also important refractory materials for professions such as steel, cement, glass, and nonferrous metal exercise.
Main uses of fused magnesia: fused magnesia is mainly used for auxiliary refractory materials such as gunning materials and ramming materials, as well as special refractory bricks such as flow steel brick, magnesia brick, magnesia chrome brick, etc. It can also be used as refractory furnace lining in vacuum and non vacuum induction furnaces and electric arc furnaces. It is an ideal material for manufacturing magnesium oxide crucibles, furnace liners, and various high-temperature bushings.
Production process of large crystal fused magnesia: Large crystal fused magnesia is mainly produced by melting 91% - 92% magnesium oxide and 0 mm - 3 mm standard magnesium oxide particles in an electric arc furnace. This product has high purity, large crystal particles, fine structure, strong slag resistance, and good thermal shock stability. It is an excellent high-temperature electrical insulation material, and is also an important material for manufacturing high-grade magnesia bricks, magnesia carbon bricks, and amorphous refractory materials. Widely used in metallurgy, chemical industry, national defense, scientific research, aerospace, household electrical components, etc.
Features of large crystal fused magnesia products: high purity, large melting crystalline particles, high melting point, fine texture; Good thermal shock stability; Excellent high-temperature bending strength; Excellent slag resistance and corrosion resistance; Strong thermal conductivity and high insulation.
Use of large crystal fused magnesia product: Large crystal fused magnesia is used for lining refractory materials of steel making furnaces. It is a high-quality basic refractory material for manufacturing refractory bricks and unshaped refractory materials; It can also be used as a filler in the manufacture of thermocouples and thermal insulation materials (household appliances, etc.); It can also be used for ceramic materials and sintering aids, as well as metallurgy, building materials, chemical engineering, national defense, medical devices, etc.
