Purpose: Additive for taphole mixes and other dry refractory mixtures for blast furnaces and foundry units. Alloying material for production of special steels
Effect: increased corrosion resistance to liquid metal/slag, improved sintering characteristics, enhanced resistance of refractory linings
Form-Factor: Custom blends, packaged for dosing

Silicon nitride improves corrosion resistance and resistance to liquid cast iron and slag, while iron silicides provide good sintering ability of the refractory mixture. This composition is widely used in taphole refractory mixes abroad. NFS® is produced by technological combustion in a nitrogen environment under high pressure and temperature