Method for preparing a coal slurry substantially depleted in min

Details Method for preparing a coal slurry substantially depleted in min Method for preparing a coal slurry substantially depleted in min

1975-12-22

1977-08-02

Gantz, Delbert E.

Mineral oils: processes and products

Phenolic or toxic oils

209 10, 209158, 48201, C10G 104, B03B 566

Patent

active

040394255

ABSTRACT:
A slurry of coal solids or similar carbonaceous material substantially depleted in mineral-rich particles is prepared for delivery to any desired place of use by introducing particulate coal and a suitable carrier liquid into a slurry preparation zone; passing a stream of slurry from the slurry preparation zone to a liquid-solids separator; returning a concentrated slurry stream from the separator to the slurry preparation zone; and passing a substantially clarified liquid stream from the separator to an elutriation zone, which communicates with and extends downward from the slurry preparation zone, in such a manner as to form an upward directed current in the elutriation zone. The velocity of the upward directed current is adjusted so that the heavy mineral-rich particles, which enter the slurry preparation zone with the particulate coal, pass downward through the upward directed current into a collection zone thereby resulting in the formation of a slurry in the slurry preparation zone which is substantially depleted in mineral-rich particles.

REFERENCES:
patent: 1989937 (1935-02-01), Lessing et al.
patent: 2055161 (1936-09-01), Vissac
patent: 2441820 (1948-05-01), Jenell
patent: 2859872 (1958-11-01), Hirst
patent: 3261559 (1966-07-01), Yavorsky et al.
patent: 3775071 (1973-11-01), Hoffert et al.
patent: 3856658 (1974-12-01), Wolk et al.

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