Method of making activated carbon

Details Method of making activated carbon Method of making activated carbon

C - Chemistry, Metallurgy

01

B

252/24

C01B 31/10 (2006.01) C01B 31/14 (2006.01)

Patent

CA 1082673

TITLE A METHOD OF MAKING ACTIVATED CARBON ABSTRACT OF THE DISCLOSURE Activated carbon is made by forming a slurry of carbonaceous and non-carbonaceous fine particles, preferably finely divided non-caking coal, in a suspension liquid, preferably water. A liquid lyophobic to the suspension liquid and the non-carbonaceous fine particles and lyophilic to the carbonaceous fine particles, which is preferably carbonizable, is added to the slurry; and the resulting mixture agitated to preferentially agglomerate the carbonaceous fine particles while the non-carbonaceous fine particles remain substantially unagglomerated in the slurry. The agglomerated fine particles of carbonaceous material are thereafter separated from the mixture, and carbonized and activated, preferably by heating to greater than about 450°C. and preferably greater than 500°C. in the presence of steam, to form activated carbon.

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