Process for the selective agglomeration of sub-bituminous coal fines
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United States of America Patent
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Feb 23, 1988
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N/A
app pub date -
Jul 9, 1984
filing date -
May 23, 1984
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The process involves adding a low quality oil to an aqueous slurry of sub-bituminous coal particles to act as a selective agglomerating agent. When the mixture is agitated, as by pumping it through a pipeline loop, the coal particles agglomerate and may later be separated from the minerals by screening. The low quality oil used is selected from the group consisting of bitumen, heavy oil, and emulsions thereof. In a preferred aspect, a light hydrocarbon diluent, selected from the group consisting of kerosene, naphtha, and diesel oil, is added to improve the agglomeration results.
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