Classifying – separating – and assorting solids – Precedent preparation of items or materials to facilitate... – Sorting special items or sorting by methods and apparatus...
Patent
1982-04-02
1983-11-22
Hill, Ralph J.
Classifying, separating, and assorting solids
Precedent preparation of items or materials to facilitate...
Sorting special items or sorting by methods and apparatus...
209 44, 209459, 241 24, B03B 552
Patent
active
044167687
ABSTRACT:
Ground ore is processed in a series of three spiral concentrators wherein the initial spiral is operated to reject a tailing of a predetermined low value, the second spiral is operated to maximize the removal of locked middlings, and the third spiral is operated to obtain a concentrate of a predetermined value.
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Thompson et al., "The Humphreys Spiral", Engineering and Mining Journal, Aug. 1950, pp. 87-89.
Hill Ralph J.
Krayer William L.
Quebec Cartier Mining Company
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