Process for using foamed slag in stainless steel production

Details Process for using foamed slag in stainless steel production Process for using foamed slag in stainless steel production

1993-12-01

1995-03-07

Rosenberg, Peter D.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

420 71, 420116, C21C 700

Patent

active

053954203

ABSTRACT:
In the production of stainless steels, it is possible to use foamed slag, with great advantages, by using a metal charge with specific carbon and silicon contents, by insufflating limestone and carbon, by controlling the amount of employed oxygen and by maintaining the basicity index of the slag within specific values.

REFERENCES:
patent: 2422299 (1947-06-01), Fink
patent: 3366474 (1968-01-01), Akita
patent: 3483671 (1969-12-01), Wiemer
patent: 3615348 (1971-10-01), Tanczyn
patent: 3791819 (1974-02-01), Loutzenhiser
patent: 4247307 (1981-01-01), Chang
patent: 4587807 (1986-05-01), Suzuki
patent: 4741746 (1988-05-01), Chao et al.
patent: 5263317 (1993-11-01), Watanabe et al.
Patent Abstracts of Japan, "Method for Producing Chromium-Contained Steel," vol. 13, No. 504, Nov. 13, 1989.
Patent Abstracts of Japan, "A Method for Adding Chromium to Arc Furnace," vol. 12, No. 263, Jul. 22, 1988.

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