Removal of mineral matter including pyrite from coal

Details Removal of mineral matter including pyrite from coal Removal of mineral matter including pyrite from coal

1973-06-25

1976-11-23

Dees, Carl F.

Fuel and related compositions

Liquid fuels

Aluminum or heavy metal, other than lead, containing

201 17, 423461, C10L 910, C10B 5700, C01B 3102

Patent

active

039934551

ABSTRACT:
Mineral matter, including pyrite, is removed from coal by treatment of the coal with aqueous alkali at a temperature of about 175.degree. to 350.degree. C, followed by acidification with strong acid.

REFERENCES:
patent: 200663 (1877-11-01), Morey
patent: 2162221 (1939-06-01), Kasehagen et al.
patent: 2346151 (1944-04-01), Burk et al.
patent: 2739105 (1956-03-01), Ford et al.
patent: 2878163 (1959-03-01), Hutchings
patent: 3214346 (1965-10-01), Mason et al.
patent: 3393978 (1968-07-01), Murphy et al.

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