It is made of fused magnesia with low silicon, high calcium and high purity and large crystal fused magnesia as the main raw materials, together with high-purity graphite with large scales, metal and Boride and other composite fillers, and is combined with thermosetting and thermoplastic phenolic resin. The product has the characteristics of high density, high strength, and high purity, good resistance to mechanical erosion of molten steel, and excellent resistance to high temperature and oxidation resistance. Fused magnesia
