Process for producing high concentration coal-water slurry
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United States of America Patent
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Nov 17, 1987
Issued Date -
N/A
app pub date -
Aug 7, 1986
filing date -
Dec 3, 1981
priority date (Note) -
Expired
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Abstract
A high-concentration coal-water slurry of a coal concentration as high as 71 percent by weight at a viscosity of 2,000 cp (at 25.degree. C.) can be produced by first coarsely crushing a starting coal, further pulverizing 95 to 30 percent by weight of the coarsely crushed thus obtained, subjecting the finely pulverized coal thus obtained, together with the remainder of the coarsely crushed coal, to crushing in a wet-type crusher, and pulverizing and adjusting the coal particles to a particle size constitution of 20 to 30 percent by weight of 200-mesh size and larger and 80 percent by weight or less of 350-mesh size and smaller.
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