Classifying – separating – and assorting solids – Fluid suspension – Liquid
Patent
1982-03-30
1984-05-29
Lacey, David L.
Classifying, separating, and assorting solids
Fluid suspension
Liquid
209454, 209500, 138 41, 239DIG18, B03D 568
Patent
active
044513593
ABSTRACT:
Gold flakes and small nuggets are separated from heavy sand by fluidizing the mixture with an upwardly flowing water column having a very uniform velocity across its section. The upwardly flowing water column has sufficient flow to fluidize the suspended material but not enough to carry the heavy sand over the top of the column. Heavy sand is withdrawn from the upper portion of the fluidized mixture to leave the gold below the withdrawal point.
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patent: 4119276 (1978-10-01), Nelson
patent: 4344459 (1982-08-01), Nelson
Dicke, Jr. Allen A.
Lacey David L.
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