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U.S. Department of Energy
Office of Scientific and Technical Information

Process for dewatering coal slurries

Patent ·
OSTI ID:6371800
The invention concerns a method for optimization of the coal slurry dewatering process. Through a regulation of the fine grain content, it is possible to keep the filter cake at a constant level and thus to maximize the dewatering process. A separation of the slurry into a predominantly relatively fine grain fraction and a relatively coarse grain fraction, with the division point being between about 0.03 and 0.15 mm, is carried out, with a formation of a coal agglomerate from the fine grain fraction, and a dehydration of both the coarse grain fraction and the coal agglomerate from the fine grain fraction.
Assignee:
Bergwerksverband Gmbh (Germany, Federal Republic Of)
Patent Number(s):
US 4257879
OSTI ID:
6371800
Country of Publication:
United States
Language:
English