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US 4,009,024 AGranted
Process for regeneration and reuse of steelmaking slag
AssigneeKoppers Company, Inc.
InventorA. Leslie Miller
Life of this patent
Estimating the term…
Abstract
A process for the regeneration of slag involves treating the slag after the steel has been removed from the steelmaking heat. Oxygen and a fluid hydrocarbon fuel are lanced into the molten slag to reduce metal oxides in the slag to their metallic state and to purify the slag. After the treatment, the metal constituents are removed from the slag treating vessel and the molten slag can be used for another steel heat.
Claims15
A method of treating molten steelmaking slag comprising:
- i. isolating molten steelmaking slag from a steel heat;
- ii. simultaneously introducing sufficient oxygen and a fluid hydrocarbon fuel into the molten slag to reduce the oxides of iron, manganese, phosphorus and silicon to their elemental state to form a contaminated liquid steel;
- and,
- iii. recovering the contaminated steel so produced.
1 more element
Dependencies are inferred from the claim text.