Apparatus for the recovery of liquid aluminium by compression of

Details Apparatus for the recovery of liquid aluminium by compression of Apparatus for the recovery of liquid aluminium by compression of

1985-06-10

1986-03-11

Andrews, Melvyn J.

Metallurgical apparatus

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

By separating metal in a molten mass from undesired...

100116, B30B 906

Patent

active

045750564

ABSTRACT:
The present invention relates to a process and apparatus for the recovery of liquid aluminium by compression of hot dross.
The process comprises placing the dross in a die up to a height which depends on the diameter of said die and which is lower at the center than at the periphery of the die, and then applying to the dross a punch which is moved downwardly at a speed which is lower in proportion to a lower level of concentration of liquid aluminium in the dross.
The apparatus comprises a cylindrical die (10) provided with an insert member at each of its ends. The die rests on a base (3) which has an annular groove (4) on its upper face; the lower insert member (7) is of a diameter that is at least equal to the inside diameter of the groove and in any case less than the outside diameter and has a continuous upper face of conical shape; the space (16) between the wall surface of said insert member and the internal wall surface of the die is of a constant width and is disposed facing the groove.
The invention is used in the aluminium industry when there is a need to treat dross in an economical fashion and under good conditions in regard to health.

REFERENCES:
patent: 2278135 (1942-03-01), Osborn
patent: 4057232 (1977-11-01), Ross et al.
patent: 4137073 (1979-01-01), Singleton
patent: 4386956 (1983-06-01), Roth et al.

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