Process for pneumatic stirring of a bath of molten metal

Details Process for pneumatic stirring of a bath of molten metal Process for pneumatic stirring of a bath of molten metal

1982-03-04

1983-08-09

Rosenberg, Peter D.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

C21C 534, C21C 710

Patent

active

043976840

ABSTRACT:
A process of pneumatic stirring of a bath of molten metal according to which a stirring fluid is injected through permeable refractory elements arranged at the bottom of a crucible containing the bath, in which the used stirring fluid is, at least temporarily, an organic liquid such as hydrocarbon.
The process is advantageously used on a bath of molten pig iron during refining of the same by oxygen, and in which the organic liquid is replaced immediately after decarburization of the bath by an inert gas such as argon or nitrogen.
The process thus permits an efficient stirring of the bath of molten metal without the risk of polluting the metal either by hydrogen or nitrogen.

REFERENCES:
patent: 3640702 (1972-02-01), Karinthi
patent: 3817744 (1974-06-01), Leroy
patent: 3854932 (1974-12-01), Bishop
patent: 4369060 (1983-01-01), Metz

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