Refining iron in a converter

Details Refining iron in a converter Refining iron in a converter

1979-03-26

1980-09-30

Rosenberg, P. D.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 59, C21C 534

Patent

active

042253411

ABSTRACT:
Molten iron is refined in a converter whose bottom has tuyeres with coaxial ducts. An oxidising gas such pure oxygen is blown through the inner duct while a protective fluid such as a hydrocarbon is blown through the outer duct. During tipping of the converter from a sampling position to an emptying position after the blow, entry of molten metal is prevented by blowing fluids through the ducts, at least one of the fluids being a gas substantially consisting of CO.sub.2. If a corrective blow is necessary after sampling, this may be carried out by blowing an oxidising gas through the inner ducts and CO.sub.2 (alone or with hydrocarbons) through the outer ducts.

REFERENCES:
patent: 3330645 (1967-07-01), De Moustier
patent: 3706549 (1972-12-01), Knuppel
patent: 3779534 (1973-12-01), Leroy

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