Classifying – separating – and assorting solids – Stratifiers – With pneumatic treatment
Patent
1980-12-08
1981-10-13
Hill, Ralph J.
Classifying, separating, and assorting solids
Stratifiers
With pneumatic treatment
209486, 209493, 209502, 209506, B03B 400
Patent
active
042946930
ABSTRACT:
Virgin ore in granular form is enriched by air flotation classification separating at least a large part of the gangue. Suspension of the ore is effected immediately as supplied to the inlet section of the classification trough by copious upward flow of air from the air-diffusing floor plates after which separation is accomplished as the suspension flows through the trough. An adjustable gate in the partition which separates the inlet section of the plenum from the classifier section is adjusted to maintain a relatively very high pressure and consequent copious air flow as compared with the pressure of the plenum from which air is supplied in more moderate quantities to the diffuser floor of the classification trough downstream of the partition. The trough is free of any obstruction that would impede the flow of gangue to its discharge end. Flotation air is supplied to the plenum only at the inlet section and a bleeder valve regulates the total flow to the air-diffusing floor plates of the apparatus. Either cross or longitudinal riffles may be employed in the trough floor as required to handle particular materials. The latter also offering continuous operation which may be enhanced by a shaker or vibrating conveyor action to move settled ore toward the discharge end of the apparatus.
REFERENCES:
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patent: 3777887 (1973-11-01), Johnston
Darbo Howard H.
Hill Ralph J.
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