Desulfurization agent

Details Desulfurization agent Desulfurization agent

1990-03-14

1992-01-07

Andrews, Melvyn J.

Specialized metallurgical processes, compositions for use therei

Compositions

Solid treating composition for liquid metal or charge

75310, 75312, C21C 7064

Patent

active

050787845

ABSTRACT:
The desulfurization agent for molten iron is made up of 70 to 95% commercial calcium carbide, 5 to 25% silicon dioxide, 0 to 10% of a metal oxide; and 0 to 5% calcium fluoride. The metal oxides are iron oxides and manganese oxides. The desulfurizing agent has been found to reduce the amount of calcium carbide in the resulting slag.

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"Desulfurization of Hot Metal with Burnt Lime", Tatsuo Ohya, et al., Steelmaking Proceedings, 1977, pp. 90-97.
"Hot Metal Desulfurization-N. American Experience with CaD", H. A. Corver et al., Iron and Steel Engineer, May 1980, pp. 53-55.
"The Activity of Iron Oxide in (CaO+CaF.sub.2 +SiO.sub.2 +Fe.sub.x O) Slags", M. J. U. T. van Wijngaarden et al., Transactions of the ISS, Feb. 1988, I&SM-49-56.

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