Classifying – separating – and assorting solids – Precedent preparation of items or materials to facilitate... – Selective differentiation
Patent
1989-09-26
1990-12-04
Focarino, Margaret A.
Classifying, separating, and assorting solids
Precedent preparation of items or materials to facilitate...
Selective differentiation
266169, 75 1R, 75118, 75 1067, 209 10, 209 16, 209 46, 209 63, 209 66, 2091271, 209131, B03B 700, B03C 500, C22B 1110
Patent
active
049751824
ABSTRACT:
The invention consists of forming an aqueous slurry of water and particles of ore carrying both metals and/or minerals which are passed at relatively high speed along an electrically isolated path in contact with electrically insulating materials and in the presence of air. This generates a positive electrostatic charge in the water droplets and enclosed particles and a negative charge in the electrically insulating materials through which they are being driven. The water droplets and hence the particles become differentially charged so that when they pass over an oppositely charged negative field, they are driven into the lower oppositely charged field body by the strong force of electrical attraction and the relatively weaker force of gravity. Should the negative collector contain an amalgamating material such as mercury and the ore, as an example contain gold, electrons are exchanged providing instant amalgamation of the surface of the gold. The electrostatic charge is maintained throughout the process until precipitation of the particles is completed.
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DCRS (Barbados) Ltd.
Focarino Margaret A.
Wacyra Edward M.
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