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

Separation of clay from coal

Patent ·
OSTI ID:6874524
A method of separating fine coal particles from refuse particles comprising the step of: (a) providing a coal filter cake (b) forming a slurry of fine coal particles and refuse particles in a liquid mixture comprising water and organic liquid, (c) contacting said coal filter cake with said slurry, whereby a major portion of said water and a major portion of said refuse pass through said filter cake and a major portion of said organic liquid and a major portion of said fine coal particles pass across the top of said filter cake.
Assignee:
Conoco Inc.
Patent Number(s):
US 4437982
OSTI ID:
6874524
Country of Publication:
United States
Language:
English