Method of and apparatus for metallurgically treating molten meta

Details Method of and apparatus for metallurgically treating molten meta Method of and apparatus for metallurgically treating molten meta

1983-05-03

1984-06-26

Rosenberg, Peter D.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 49, 266207, C21C 700

Patent

active

044564783

ABSTRACT:
Molten steel, carried in a transport ladle from a converter to a casting stage, is treated in a heating chamber which has two tubes depending from its bottom into the ladle to a depth sufficient to penetrate a slag layer and an intermediate layer atop the melt. The ladle is surrounded by a pressure vessel whose rim sealingly engages an outlying annular flange of the chamber bottom and into which high-pressure gas is admitted to drive part of the melt into the heating chamber. Each of these two tubes is initially closed at its lower end by a fusible sheet-metal cap which prevents the entry of slag into the heating chamber but melts upon immersion into the hot metal bath. Treatment gas may be introduced into the chamber via one of these tubes.

REFERENCES:
patent: 3689046 (1972-09-01), DeBie
patent: 3798025 (1974-03-01), Ramachandran

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