Treatment of coal
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United States of America Patent
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Feb 1, 2011
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N/A
app pub date -
Feb 1, 2006
filing date -
Nov 5, 1999
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Abstract
Process for treating coal to enhance its rank, wherein the temperature of the material is gradually increased in a controlled set of atmospheres, to allow for the reduction of surface and inherent moisture and the controlled reduction of volatile matter while maintaining the coal's natural structural integrity. The process reduces the time, capitalization, and production costs required to produce coal of enhanced rank, thus substantially increasing the cost effectiveness and production rate over prior processes.
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