Method of recovering coal in aqueous slurry form

Details Method of recovering coal in aqueous slurry form Method of recovering coal in aqueous slurry form

1977-09-06

1979-01-02

Novosad, Stephen J.

Mining or in situ disintegration of hard material

In situ conversion of solid to fluid

Dissolving or chemical reaction

241 1, B02C 1900, E21C 4104

Patent

active

041324480

ABSTRACT:
A method of in-situ coal recovery in slurry form from a coal deposit by first contacting the coal with a gaseous mixture of an oxygen-containing gas containing vaporized NO.sub.2, then with an aqueous alkaline solution to slurry the coal, and then recovering the slurried coal from the deposit.

REFERENCES:
patent: 1532826 (1925-04-01), Lessing
patent: 3815826 (1974-06-01), Aldrich
patent: 3850477 (1974-11-01), Aldrich et al.
patent: 3918761 (1975-11-01), Aldrich
patent: 4023193 (1977-06-01), Drinkard et al.

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