Metallurgical apparatus – Means for melting or vaporizing metal or treating liquefied... – Slag refining means
Patent
1984-11-29
1985-09-10
Andrews, Melvyn J.
Metallurgical apparatus
Means for melting or vaporizing metal or treating liquefied...
Slag refining means
210179, 266227, B01D 3518
Patent
active
045401632
ABSTRACT:
A power driven press for recovering aluminum from aluminum dross is disclosed. The press has a receptacle for containing dross. The receptacle has at least one inclined sidewall and at least one passageway extending through its bottom. The passageway is sized and configured to permit the passage of free aluminum but inhibit the passage of a network of solid particles contained within the dross. Ram means for mechanically compacting the dross is also provided. The ram means applies a compressive force on the dross towards the inclined sidewall of the receptacle to force coalescence and separate a substantial portion of the free aluminum from the dross and pass it through the passageway provided in the receptacle's bottom. The ram means is provided with a ramming surface which faces the inclined sidewall surface of the receptacle. The ramming surface is inclined at an angle which is slightly less than that of the sidewall surface. As such, these surfaces cooperate during compaction to inhibit upward displacement of the dross around the ram means but enhance downward movement of the free aluminum in the dross towards and through the bottom passageway. A power source for reciprocally driving the ram into and out of the receptacle is also provided, as is means for collecting the free aluminum passing through the bottom passageway.
REFERENCES:
patent: 4057232 (1977-11-01), Ross et al.
patent: 4191559 (1980-03-01), van Linden et al.
patent: 4286985 (1981-09-01), van Linden et al.
patent: 4386956 (1983-06-01), Roth et al.
van Linden Jan H. L.
Whitehead James S.
Aluminum Company of America
Andrews Melvyn J.
Smith Brian D.
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