Classifying – separating – and assorting solids – Plural – diverse separating operations – Sifting and stratifying
Patent
1983-04-11
1985-06-25
Hart, Charles
Classifying, separating, and assorting solids
Plural, diverse separating operations
Sifting and stratifying
209458, 209202, 210474, B07B 900
Patent
active
045252700
ABSTRACT:
Heavy minerals such as gold, silver, platinum, etc., along with gemstones such as diamonds, rubys, sapphires, etc., occuring in nature in the free state or having been mechanically released by crushing, screening and/or sorting into a free state, can be separated from the common material, into which they are mixed, by applying water to the mixture of materials and allow their different specific gravities to separate them into the bottom of a grooved trough. In the novel mineral concentrator described, to minimize the loss of water, a recirculating pump re-uses the same water from a reservoir repeatedly. The free minerals and gemstones settle out of the main water flow and are trapped into grooves and other pockets and crevices. Some of the pump's water flow is allowed into a feed hopper to wash down the hopper's walls, and in conjunction with shaped apertures in the hopper bottom, automatically regulate the flow of material entering the main trough or sluice. All of the lighter material which leaves the sluice section, passes into a filter bag which retains the particulate matter, thus separating the waste material from the water which is left in a clean condition.
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