Large crystal electric fused magnesite is made from selected special grade natural magnesite or high purity caustic calcined magnesium particles, fused in arc furnace to forming. It has high purity, large crystal grain, compact structure, strong resistance to slag material,and good thermal shock resistance. it is an excellent electrical insulation material used in high temperature, and important raw material for production of high-grade magnesia brick, magnesia carbon brick and monolithic refractories. Large crystal fused magnesium is mainly used for refractory material, gunning materials, fused ramming material, repairing, daub, refractory clay, masonry material, etc.