Decarburization of a metal melt

Details Decarburization of a metal melt Decarburization of a metal melt

1975-01-06

1976-11-09

Rosenberg, Peter D.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 59, C21C 534

Patent

active

039908887

ABSTRACT:
In a process for reducing the carbon content of an iron, cobalt or nickel based alloy containing carbon and at least 10% by weight chromium by introducing into the molten alloy, through at least one inner section of a tuyere which comprises at least two concentric tubes, essentially pure steam or steam and any inert gas belonging to the group consisting of nitrogen, argon, helium, neon and xenon, blockage of gas inlet is avoided by passing a gas mixture containing between 5 and 30% by volume of gaseous oxygen through an outermost section of the tuyere.

REFERENCES:
patent: 3330645 (1967-07-01), De Moustier
patent: 3751242 (1973-08-01), Knuppel
patent: 3779534 (1973-12-01), Leroy
patent: 3844768 (1974-10-01), Leroy
patent: 3867136 (1975-02-01), Eriksson
patent: 3898079 (1975-08-01), Eriksson

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