Method and apparatus for beneficiating coal
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United States of America Patent
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-
Apr 6, 1982
Grant Date -
N/A
app pub date -
Nov 14, 1980
filing date -
Nov 14, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method and apparatus for beneficiating a mixture of coal and a denser material are provided. The coal and ash mixture and a liquid medium are deposited into a rotating, sloping barrel having internal spiral flights and foraminous end sections. Coal and medium travel downwardly and the denser material is screwed upwardly. The positions of deposit of the mixture and the medium are adjustable, as are the rates of rotation of the barrel and the angle of the barrel.
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