Process for improving coal

Details Process for improving coal Process for improving coal

C - Chemistry, Metallurgy

10

L

196/11

C10L 9/02 (2006.01) C10L 9/10 (2006.01)

Patent

CA 1100070

PROCESS FOR IMPROVING COAL JAMES K. KINDIG and RONALD L. TURNER ABSTRACT OF THE DISCLOSURE In a process for improving coal wherein the raw coal is treated with a metal containing compound in order to enhance the magnetic susceptibility of certain impurity components contained in the raw coal permitting their re- moval by magnetic separation, the improvement comprising pretreating the coal by heating it to at least a tempera- ture for at least a period of time sufficient to essentially meet or exceed a time and temperature relationship ex- pressed as: Image wherein D is time in hours and T is temperature in degrees Celsius, and wherein K is preferably at least about 0.5, more preferably at least about 5, and most preferably at least about 25.

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