Process for manufacture of ferrosilicon nitride

Details Process for manufacture of ferrosilicon nitride Process for manufacture of ferrosilicon nitride

C - Chemistry, Metallurgy

22

C

23/195, 53/52

C22C 38/02 (2006.01) C01B 21/06 (2006.01) C04B 35/584 (2006.01) C21B 7/04 (2006.01)

Patent

CA 1059728

ABSTRACT OF THE DISCLOSURE Ferrosilicon nitride, to utilized in the molten iron through of a blast furnace system, is prepared by oxidation of a blend of 1 to 100 parts by weight of a dilute solution of acid with 100 parts by weight of ferrosilicon nitride. The oxidation can be carried out in the presence of wet air at a temperature in the range of 50 to 200°C. Inorganic acids such as HCl, H2SO4, HNO3, H3PO4, H2Cr2O7 and H2CrO4 are preferred, although organic acids such as CH3COOH, H2C2O4, HCOOH, tartaric acid and citric acid are also useful.

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