Forming cement as a by-product of coal liquefaction
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United States of America Patent
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Aug 20, 2013
Grant Date -
Apr 19, 2012
app pub date -
Jun 22, 2011
filing date -
May 24, 2007
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Abstract
The present disclosure provides methods and systems for coal liquefaction and obtaining a cement by-product. A method of obtaining a cement by-product of coal liquefaction may include exposing a coal to a hydrogenated vegetable oil in the presence of a coal-derived solvent to form a slurry, elevating the temperature of the slurry to facilitate liquefying the coal and liberating a volatile matter, separating the insoluble components from the slurry, heating the insoluble components to liberate a volatile matter and an entrained solvent, blending the insoluble components with a calcareous material and roasting the blend in a kiln at a temperature greater than 1000 degrees Celsius to obtain a clinker, and grinding the clinker to obtain a cement.
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