Large crystal fused magnesia calcium sand production process

The fused magnesia-calcium sand products mainly use graphite as raw material to prepare MgO-CaO fused aluminum-chromium sand with different CaO contents. The anti-CaO-SiO2 slag properties of the samples were compared by the rotary method. It affects the slag corrosion resistance and slag hanging performance. When the CaO content is the same, the slag hanging performance of the fused magnesia calcium sand is better when all aggregates are added, but the slag corrosion resistance performance is poor. Electrical grade magnesia powder, 97 electrofusion Magnesia-calcium sand, 98 fused magnesia-calcium sand only when the fused magnesia-calcium sand aggregate and powder are added in a certain proportion, that is, when the slag-hanging performance and the corrosion resistance are balanced, the residual thickness of the MgO-CaO-C brick is limited. Large. The fused magnesia-calcium sand product has the characteristics of excellent corrosion resistance and high alkaline slag penetration resistance, and good spalling resistance. The products are mainly used for ladle slag line of electric furnace and converter and refining furnace lining.

The fused magnesia-calcium sand is mainly made of magnesite ore with a content of more than 47% and melted in an electric arc furnace. The chemical indicators of fused magnesia-calcium sand can be divided into 6 major items; 1. Magnesium oxide content; 2. Silicon dioxide content; 3. Ferric oxide content; 4. Aluminum oxide content; 5. Caustic soda; 6. Body Dense; fused magnesia-calcium sand products have high purity, large crystal grains, dense structure, strong slag resistance, good thermal shock stability, and are an excellent high-temperature electrical insulating material. And an important raw material for unshaped refractories.

 Fused aluminum chrome sand

The main features of fused magnesia-calcium sand products: fused magnesia-calcium sand products are characterized by complete structure, dense organization, high melting point (up to 2800 ° C), stable chemical properties, high compressive strength, strong insulation performance, erosion resistance, corrosion resistance It is an important raw material for metallurgy, building materials, light industry, furnace lining and bulk materials, and an indispensable important refractory material for steel, cement, glass, non-ferrous metal smelting and other industries.

Main uses of fused magnesia-calcium sand: fused magnesia-calcium sand can be mainly used for auxiliary refractories such as gunning material and ramming material, as well as flow steel mouth bricks, magnesia bricks, magnesia-chrome bricks, electrical grade magnesia powder, 97 fused magnesia Calcium sand, 98 fused magnesia-calcium sand and other special refractory bricks can also be used as refractory linings on vacuum and non-vacuum induction furnaces and electric arc furnaces.

Large crystal fused magnesia-calcium sand production process: Large crystal fused magnesia-calcium sand is mainly made of 91%-92% magnesium oxide and 0mm-3mm magnesium oxide particles, which are melted in an electric arc furnace. The product has high purity, large crystal grains, compact structure, strong slag resistance, and good thermal shock stability. It is an excellent high-temperature electrical insulating material, and is also an important material for making high-grade magnesia bricks, magnesia-carbon bricks and unshaped refractories. raw material. Widely used in metallurgy, chemical industry, national defense, scientific research, aerospace, household electrical components, etc.

Features of large crystal fused magnesia-calcium sand: high purity, large melting crystal grains, high point structure, compact structure; good thermal shock stability; good high temperature flexural strength; good slag resistance and corrosion resistance; Strong thermal conductivity and high insulation.

Product use of large crystal fused magnesia-calcium sand: large crystal fused magnesia-calcium sand is used as the lining refractory material of steelmaking furnace. It is used for making 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, chemicals, national defense, medical equipment, etc.