Coal slurry grain distribution adjustment prior to dehydration

Details Coal slurry grain distribution adjustment prior to dehydration Coal slurry grain distribution adjustment prior to dehydration

B - Operations, Transporting

03

B

209/2, 209/7

B03B 7/00 (2006.01) B03B 9/00 (2006.01)

Patent

CA 1102741

ABSTRACT OF THE DISCLOSURE A process for the preparation of sludges particu- larly as occurring in the mineral coal preparation charac- terized by a combination of the following steps: (a) classification of the solid matters con- tained in the sluge at a separating grain size dT which is in the area between 0.03 and 0.15 mm into a very fine grain size enriched sludge fraction A and a more coarse sludge fraction B; (b) adjustment of the sludge fraction B to an optimum grain size distribution for the subsequent dehydra- tion with or without preceding sorting; (c) treating of the sludge fraction A with selectively active flocculation and agglomeration agents and subsequent sorting and dehydration. -1-

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