Method for separating particulate materials

Details Method for separating particulate materials Method for separating particulate materials

1978-11-22

1983-09-20

Hill, Ralph J.

Classifying, separating, and assorting solids

Fluid suspension

Liquid

209 11, B03B 544

Patent

active

044054521

ABSTRACT:
Particulate materials of different density are separated from one another by placing them in non-reactive liquefied gas of intermediate density whereby the lighter material floats and the heavier material sinks. A pressure field may be established in the liquefied gas to enhance the particulate separation process. The method is especially suited for separating and removing oxide and other particulate contaminants from metal and alloy powders.

REFERENCES:
patent: 2109234 (1938-02-01), Keenan
patent: 2165607 (1939-07-01), Blow
patent: 2730235 (1956-01-01), Swimmer
patent: 2896922 (1959-07-01), Pohlman
patent: 3133876 (1964-05-01), Klass
patent: 3180691 (1965-04-01), Wunsch et al.
patent: 3578162 (1971-05-01), Jepsen
patent: 3992288 (1976-11-01), Kling
patent: 3997435 (1976-12-01), Farnum et al.
O'Connell, "Properties of Heavy Liquids", Transactions of the Society of Mining Engineers, (pp. 126-132), Jun. 1963.

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