Pure magnesite, light burned magnesia (containing natural magnesite or sea (brine) water) or sintered magnesia are usually used to melt in the electric arc furnace, and the melt is naturally cooled. The periclase crystal is crystallized and grown from the melt. Due to the use of high-purity raw materials, the content of silicate impurities is low, so the direct bonding degree of periclase crystal is high

It can give full play to the good properties of periclase. From magnesia carbon brick Fused magnesia In use with sintered magnesia, it is found that since slag erosion starts from the crystal interface of periclase, the corrosion resistance of fused periclase large crystals is much stronger than that of sintered periclase microcrystals. The fused magnesia is often used as the raw material of high-grade magnesia carbon refractory products.