Apparatus for sparging molten metal by gas injection

Details Apparatus for sparging molten metal by gas injection Apparatus for sparging molten metal by gas injection

1979-03-02

1981-09-22

Andrews, M. J.

Metallurgical apparatus

Means for melting or vaporizing metal or treating liquefied...

By means introducing treating material

261122, 164266, C22B 2106

Patent

active

042905907

ABSTRACT:
A process for sparging molten metal comprises passing gas bubbles upwardly through a series of spaced nozzles arranged in a trough or furnace, the nozzles being arranged to prevent lateral spread of emergent bubbles so as to hold down the bubble size to a controlled size and thus increase the surface area/volume relationship to a desired value.
The apparatus employed preferably is embodied in a refractory plate having a series of spaced protrusions or ribs on the upper face. Spaced gas orifices are formed in the protrusions or ribs. The lateral spread of the bubbles is checked or hindered when the gas/metal interface of growing bubbles reaches the sides of the protrusions or ribs.

REFERENCES:
patent: 23123 (1859-03-01), Stewart et al.
patent: 536904 (1895-04-01), Williams
patent: 2562813 (1951-07-01), Ogorzaly
patent: 3010712 (1961-11-01), Judge et al.

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