Specialized metallurgical processes – compositions for use therei – Compositions – Solid treating composition for liquid metal or charge
Patent
1997-04-07
1999-02-23
Simmons, David A.
Specialized metallurgical processes, compositions for use therei
Compositions
Solid treating composition for liquid metal or charge
75315, 75314, 75313, 75303, 75503, 75504, 75507, C21C 700
Patent
active
058739246
ABSTRACT:
A desulfurization composition contains from about 3% to about 20% particulate metallic aluminum, about 5% to about 30% particulate alumina, about 0.5% to about 12% particulate hydrocarbon material or other gas generating composition and the balance lime plus impurities. Preferably aluminum dross is the source of aluminum and alumina. The desulfurization composition is injected into molten iron from a blast furnace preferably in an amount of 4 to 20 pounds desulfurizer per ton of hot metal. The desulfurizing composition can be injected as a blend or co-injected into the hot metal through a lance using a carrier gas or dumped into the hot metal as it is being poured into the ladle. At least for torpedo ladles, the desulfurization composition can be placed in the ladle before the hot metal is poured into it.
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Branion, Jr. Robert V.
Kinsman Brian Mark
Luyckx Leon A.
Young, Jr. James H.
Elve M. Alexandra
Reactive Metals & Alloys Corporation
Simmons David A.
USX Corporation
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