Method and apparatus for coal separation using fluorinated hydro

Details Method and apparatus for coal separation using fluorinated hydro Method and apparatus for coal separation using fluorinated hydro

1978-07-31

1979-12-11

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 9, 209 10, 209 11, 209172, 299 8, 299 12, 406197, B03B 544, B03B 900

Patent

active

041782313

ABSTRACT:
Coal is separated in a gravity separator using a fluorinated hydrocarbon parting liquid. The cleaned coal is burned and the ash mixed with recovered parting liquid and returned to the gravity separator. Additives may be dispersed in the parting liquid to alter the physical and/or chemical characteristics of the products. The additive may be a dustproofing or a waterproofing agent.

REFERENCES:
patent: 2109234 (1938-02-01), Keenan
patent: 2670078 (1954-02-01), Davis
patent: 3348675 (1967-10-01), Tveter
patent: 3637263 (1972-01-01), Wasp

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