Preparation of deashed high solid concentration coal-water slurry
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United States of America Patent
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Jun 10, 1986
Grant Date -
N/A
app pub date -
May 17, 1984
filing date -
May 21, 1983
priority date (Note) -
Expired
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Abstract
This process, which comprises subjecting coal to gravity classification to classify into a low ash coal, a middle ash coal and a high ash coal; deashing the middle ash coal by flotation; and using the deashed middle ash coal together with the low ash coal as the materials for producing a coal-water slurry, provides a low ash content and high solid content coal-water slurry in a high coal recovery as well as economically. This coal-water slurry is able to handle, store and burn as are fuel oils.
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