Method of separating vermiculite from the associated gangue

Details Method of separating vermiculite from the associated gangue Method of separating vermiculite from the associated gangue

1978-10-23

1981-01-27

Halper, Robert

Classifying, separating, and assorting solids

Electrostatic

Attracting

B03C 700

Patent

active

042473900

ABSTRACT:
A method of separating vermiculite from the associated gangue is disclosed in which the ore is fed to the top of a rotating support comprising a grounded conductive underlayer and a nonconductive overlayer and the ore particles are pinned to the rotating support by ion bombardment. The gangue tends to separate first from the roll while the vermiculite particles have a greater tendency to remain pinned to the roll and can be collected as a separate fraction.

REFERENCES:
patent: 865711 (1907-09-01), Kitsee
patent: 1744967 (1930-01-01), Johnson
patent: 2445227 (1948-07-01), Masse
patent: 2559076 (1951-07-01), Johnson
patent: 3322275 (1967-05-01), Breakiron
patent: 3370703 (1968-02-01), Carpenter
patent: 3477568 (1969-11-01), Madrid
patent: 3897330 (1975-07-01), Rhys
patent: 3941685 (1976-03-01), Sigewald
patent: 3970546 (1976-07-01), Webb
Electrostatic Sep. of Mixed Granular Solids, Ralston, 1961, pp. 136, 140, 141, pp. 70, 67.
Electrostatic Sep. of Granular Matls., Bulletin 603, Bu. of Mines, 1962, p. 96.

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