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silicon nitride is a gray (dark brown) powder bar or gray granular material, si3n4 as the main component accompanied free iron and small amounts of other ingredients mixture. it is a new high-quality refractory material, and has good opening properties, the sintering assistant, corrosion resistance and low cost. after adding metal melt silicon nitride can get a good room temperature and low temperature strength, good corrosion resistance, thermal shock and wear resistance. silicon nitride powder is mainly used for tamping plug in large blast furnace, a small amount of material is used for iron runner  or other unshaped refractories; grain-oriented silicon nitride is mainly used for oriented silicon steel or other steels which uses nitride to improve the strength (eg hrb400 rebar). product is suitable for stainless steel smelting, special alloy steel smelting, special refractories, defense industry, electronic industry and other smelting, casting industries.

physical and chemical index

we can adjust the composition and granularity according to user’s needs.

packge

half of tons bag