Process and agent for the desulphurization of iron based melts

Details Process and agent for the desulphurization of iron based melts Process and agent for the desulphurization of iron based melts

C - Chemistry, Metallurgy

21

C

53/365, 53/95

C21C 7/04 (2006.01) C21C 1/02 (2006.01)

Patent

CA 1102555

ABSTRACT OF THE DISCLOSURE A carbonate, carbide based desulphurizing agent for iron based melts, containing an alkaline earth carbonate, a reducing metal carbide with supplementary carbon substantially absent and, optionally, a free reducing metal. The carbide may be one or more of those of Ca, Ba, Mg, Al, Ti, B, or Li. The illustrated carbonates are CaCO3, MgCO3, BaCO3 and dolomite and the illustrated reducing metals are Al, Mg and Ca. When introduced into the melt, gas is transiently evolved and subsequently captured by the carbide and reducing metal which promotes mixing. Oxides liberated in the process effect desulphurization of the melt.

298052

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