Classifying – separating – and assorting solids – Plural – diverse separating operations – Sifting and stratifying
Patent
1984-09-21
1986-03-04
Lutter, Frank W.
Classifying, separating, and assorting solids
Plural, diverse separating operations
Sifting and stratifying
209423, 209466, 209486, 209500, 209502, 209498, B03B 520
Patent
active
045740461
ABSTRACT:
A centrifugal jig to beneficiate ore by separating a heavier particulate fraction from a lighter particulate pulp. The jig provides a rotor with a vertical cylindrical jig screen rotating in a fluid filled hutch to support a vertical jigging bed. The jigging bed is pulsed sequentially as it is rotated past plural spaced pulsing elements positioned in the hutch externally of the jigging screen. Pulsing may be by pressurized air in the form of fine bubbles, by pressurized fluid or a combination of both. Pulp material is fed at the bottom of the jigging screen to move upwardly thereacross with the lighter gangue material exiting above the screen for exhaustion and the heavier mineral bearing fraction exiting through the screen for subsequent recovery from the bottom periphery of the hutch area. The jig may be used as a bedded centrifuge or in the fashion of a traditional jig especially as when provided with ragging. A particular impeller type seal is provided to lessen fluid exit between the adjacent relatively movable surfaces of rotor and hutch.
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Bergman Keith S.
Lithgow Thomas M.
Lutter Frank W.
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