Method of and apparatus for metallurgical treatment of a melt

Specialized metallurgical processes – compositions for use therei – Processes – Electrothermic processes

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75129, 75130R, 75130BB, 266216, C22C 3308

Patent

active

044215550

ABSTRACT:
A system for treating, normally refining, a metallurgical melt has a melt-containing vessel having below the level of the melt an at least gas-pervious wall portion. A finely divided treatment solids is suspended in a treatment gas and this suspension is introduced through the pervious wall portion into the melt and reacting the melt with the gas and solids. The wall portion has openings oriented so that the gases and particles can pass into the vessel through them, but the molten metal therein cannot enter them. A plurality of such gas-and particle-pervious inserts are provided in the base of the crucible. They can be individually controlled relative to respective sensors provided above the melt. Thus exothermically reacting gases and/or particles are fed in under cold spots, or endothermically reacting gases and/or particles are fed in under hot spots.

REFERENCES:
patent: 3343829 (1967-09-01), Coates
patent: 3484232 (1969-12-01), Karinthi
patent: 3619172 (1971-11-01), Lutgen

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