Method for desulfurizing a molten iron by injection

Details Method for desulfurizing a molten iron by injection Method for desulfurizing a molten iron by injection

C - Chemistry, Metallurgy

21

C

53/99

C21C 7/064 (2006.01) C21C 1/02 (2006.01)

Patent

CA 1212239

ABSTRACT OF THE DISCLOSURE Injection-desulfurization of a molten iron is carried out at a lower cost by using, as a desulfurizing agent, powdered CaCO3 obtained by pulverizing limestone. This injection- desulfurization also can be attained by using as the desulfurizing agent, a powdery mixture in which a main ingredient is said powdered calcium carbonate and which has added thereto: (a) not more than 30% by weight of powdered quicklime, or (b) 5 ? 20% by weight of a carbonaceous material and 2 ? 15% by weight of at least one of halides of alkali and alkaline earth metals, or (c) 5 ? 20% by weight of a carbonaceous material, 2 ? 15% by weight of at least one of halides of alkali and alkaline earth metals and not more than 30% by weight of powdered quicklime.

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