Methods of and apparatus for cleaning coal

Details Methods of and apparatus for cleaning coal Methods of and apparatus for cleaning coal

1975-03-24

1979-11-06

Hill, Ralph J.

Classifying, separating, and assorting solids

Precedent preparation of items or materials to facilitate...

Selective differentiation

209 11, 209172, 406197, B03B 100, B03B 544

Patent

active

041735307

ABSTRACT:
Methods of and apparatus for cleaning coal in which fluorochlorocarbons are used as parting liquids. Various novel techniques, components, and combinations thereof are employed to maximize efficiency; to minimize costs and adverse environmental impacts; to make it possible to recover coal of a character which has heretofore been economically unrecoverable; to produce a superior product; and to reach other worthwhile goals.

REFERENCES:
patent: 1106195 (1914-08-01), Du Pont
patent: 2109234 (1938-02-01), Keenan
patent: 2151578 (1939-03-01), Alexander et al.
patent: 2670078 (1954-02-01), Davis

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