Process of separating solid granular metallurgical products and

Details Process of separating solid granular metallurgical products and Process of separating solid granular metallurgical products and

1977-02-28

1979-01-09

Halper, Robert

Classifying, separating, and assorting solids

Plural, diverse separating operations

Gaseous suspension and sifting

209 32, 209318, B07B 408, B07B 100

Patent

active

041337492

ABSTRACT:
A process and apparatus for separating solid granular metallurgical products. A plurality of linearly vibrating screens are housed, one over the other, each inclining more than the one above and each having a smaller mesh opening than the one above and 1.5 to 15 times larger than the desired parting size. The solids are fed onto the uppermost screen at the upper end thereof and are deflected in the direction of inclination of the screen. The finer solids initially fall through freely and on screens having smaller mesh openings and are also deflected in the direction of inclination of the screen. The coarsest solids fraction is withdrawn as overflow from the uppermost screen, finer solids fractions are withdrawn as overflow from following screens, and solids which have passed through all screens are withdrawn as a finest fraction. A gaseous fluid is flowed through at least part of the working space required for screening approximately transversely to the direction in which the solids pass through the screens. The solids having a lower specific gravity are entrained between vertically adjacent screens by the gaseous flow and gaseous fluid laden with the solids of lower specific gravity flow into a separating chamber with the solids being separated from the gas stream in the separating chamber.

REFERENCES:
patent: 1232947 (1917-07-01), Malm
patent: 2041591 (1936-05-01), Brown et al.
patent: 2210103 (1940-08-01), Stoner
patent: 2354311 (1944-07-01), Harlow
patent: 2765079 (1956-10-01), Franken
patent: 3044619 (1962-07-01), Knolle

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