Description of Ferrosilicon Nitride:

Ferro Silicon Nitride is a mixture of Si3N4 as the main component, accompanied by free iron, non-nitride ferrosilicon and a small amount of other components. Ferrosilicon nitride is divided into two types according to its use: ferrosilicon nitride for refractory materials and ferrosilicon nitride for steelmaking. Ferro-silicon nitride for refractory materials is an off-white or dark brown powder, and ferro-silicon nitride for steel-making is an off-white granular material.

Ferrosilicon nitride is mainly used in the plugging mud of large blast furnaces, and a small amount is used in iron trench materials or other amorphous refractory materials; Granular ferrosilicon nitride is mainly used for oriented silicon steel or other steel grades that use nitrides to improve strength.

Technical Parameter of Ferrosilicon Nitride:

For refractories:

Type Brand Chemical Composition/wt%
Si3N4 TSi TN Fe Al Ca H2O
Ordinary ferrosilicon nitride NPFeSiN-A 75~80 49~51 30~32 13~15 ≤1.5 ≤1.0 ≤0.1
NPFeSiN-B 70~75 48~50 28~30 14~17
Stable ferrosilicon nitride NWFeSiN 68~75 45~48 27~30 11~14
Specification: the particle size of ordinary ferrosilicon nitride is 200 mesh, that of stable ferrosilicon nitride is 325 mesh, and the passing rate is 90%

For steelmaking:

Type Brand Chemical Composition/wt%
TSi TN Fe Al Ca P S Cr Mn Ti C
Normal LPFeSiN 49~51 30~32 13~15 ≤1.5 ≤1.0 ≤0.05 ≤0.02 / / / ≤0.1
High Purity LGFeSiN 49~51 30~32 13~15 ≤0.1 ≤0.1 ≤0.05 ≤0.02 ≤0.1 ≤0.1 ≤0.05 ≤0.1

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