Process for draining overflow foam slag

Details Process for draining overflow foam slag Process for draining overflow foam slag

1995-07-12

1997-06-24

Andrews, Melvyn

Specialized metallurgical processes, compositions for use therei

Processes

Producing or treating free metal

75 1061, 75582, C21C 554

Patent

active

056413360

ABSTRACT:
The invention relates to a furnace (1) for melting metal-bearing substances and/or production of liquid metal (4) of the type in which said metal (4) has above it a layer of slag (5) liable to be affected by a "foaming" phenomenon, in which a side wall of said furnace comprises an orifice (17) opening into an adjacent tank (22) capped with a vault (25), said tank (22) being capable of collecting a proportion of said slag (5) by overflowing through said orifice (17) when said foaming phenomenon takes on proportions that risk causing damage to said furnace (1).
The invention also relates to a process for the production of liquid metal employing such a furnace.

REFERENCES:
patent: 2997288 (1961-08-01), Schwechheimer et al.
patent: 3614082 (1971-10-01), Tsymbal
patent: 4444378 (1984-04-01), Reese
patent: 5050185 (1991-09-01), Bourge et al.
patent: 5279639 (1994-01-01), Kemeny et al.
patent: 5487081 (1996-01-01), Becker
Patent Abstract Of Japan JP 58073714; Apr. 1983.

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