Calcium-slag additive for steel desulfurization and method for m

Details Calcium-slag additive for steel desulfurization and method for m Calcium-slag additive for steel desulfurization and method for m

1983-03-28

1984-04-24

Rosenberg, Peter D.

Specialized metallurgical processes, compositions for use therei

Compositions

Loose particulate mixture containing metal particles

75 53, C22B 910

Patent

active

044445903

ABSTRACT:
A calcium-slag additive for use in desulfurization of molten steel contains, by weight, 10-25 percent calcium metal, 30-50 percent fluorspar, 10-30 percent aluminum oxide and 10-30 percent calcium oxide. The calcium-slag is produced by forming a molten mixture of lime, fluorspar and aluminum in a graphite-lined induction furnace and heating the mixture to 1300.degree.-1600.degree. C. to form a calcium-aluminum alloy phase floating on a calcium-slag phase, and tapping the calcium-slag from the bottom of the furnace and rapidly cooling the same to form a solid calcium-slag material.

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patent: 4060406 (1977-11-01), Jones
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patent: 4209325 (1980-06-01), Cooper
patent: 4286984 (1981-09-01), Luyckx
patent: 4317678 (1982-03-01), Faulring

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