Electric fused magnesia is a high-purity oxide formed by high-temperature melting of high-quality magnesite ore in an electric arc furnace. Its main characteristics are: complete structure, dense structure, high melting point (up to 2800 ℃), stable chemical properties, high pressure resistance, strong insulation performance, erosion resistance, and corrosion resistance. It is an important raw material for metallurgy, building materials, light industry, furnace lining, and bulk materials, and an indispensable refractory material for industries such as steel, cement, glass, and non-ferrous metal smelting.