Desulphurizing agent for iron melts

Details Desulphurizing agent for iron melts Desulphurizing agent for iron melts

C - Chemistry, Metallurgy

21

C

53/110, 53/99

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

Patent

CA 1115061

ABSTRACT A desulphurizing agent for ferrous melts particularly of pig iron, molten cast iron and molten steel, comprising calcium carbine mixed with a calcium carbonate in the form of limestone diamide which includes 8 to 12% by weight of carbon present in a finely divided state, the proportion of the limestone diamide being from 2 to 40% by weight with the mixture containing a bituminous coal or high-volatile coal in an amount such that the total carbon content of the desulphurizing agent lies between about 5% and 12% by weight. The agent may be introduced into the appropriate melts, using an air lance, by stirring in an oscillating ladle, using mechanical stirring equipment, or introducing the agent into the melting aggregate for the melt. Preferably, the coal is Flammkohle or Gaskohle.

311239

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