Method of manufacturing a pumpable coal/liquid mixture

Details Method of manufacturing a pumpable coal/liquid mixture Method of manufacturing a pumpable coal/liquid mixture

1983-06-01

1986-07-08

Rosenbaum, Mark

Solid material comminution or disintegration

Processes

With application of fluid or lubricant material

241 24, 241 29, 241101B, B02C 1912

Patent

active

045988730

ABSTRACT:
In order to enable a reduction of the percentage of liquid in a liquid/coal pumping mixture the coal is dry-ground in a first grinding stage (1) to provide a relatively coarse particle size and then a fraction of the coarse ground coal is then dry-ground in a second grinding stage (9) to a relative fine particle size. The fine ground fraction is then mixed with the remainder of the coarse-ground fraction (7) and with the liquid.

REFERENCES:
patent: 2826370 (1958-03-01), Weston
patent: 3497142 (1970-02-01), Nelson
patent: 3773268 (1973-11-01), Bond
patent: 4132365 (1979-01-01), Verschuur
patent: 4265407 (1981-05-01), Kessler et al.
patent: 4282006 (1981-08-01), Funk
"Development and Evaluation of Highly-Loaded Coal Slurries", R. S. Scheffee and E. T. McHale, 2nd International Symposium on Coal-Oil-Mixture Combustion, Nov. 27-29, 1979, Danvers, Mass., U.S.A.
"Herstellung, Transport und Verbrennung von Kohle/Wasser-Suspension", O. Schwarz and H. Merten, Brennstof-Warme-Kraft, vol. 18, No. 10, pp. 474-478, 1966.

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