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US 4,303,532 AGranted
Dewatering of slimes
AssigneeThe United States of America as represented by the Secretary of the Interior
InventorsAnnie G. Smelley, Robert W. Montgomery, Bobby J. Hamner
Life of this patent
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Abstract
Efficient dewatering of slimes is achieved by admixing the slimes with a flocculating agent, followed by mechanical manipulation to effect rapid removal of water and consolidation of solids. The required mechanical manipulation may be accomplished, e.g., by tumbling the mixture through a rotating cylindrical screen or by passing it across a vibrating screen.
Claims6
A process for dewatering of slimes consisting essentially of:
- admixing the slimes with an amount of flocculating agent sufficient to effect coagulation of the solids in the slimes,
- retaining the slimes-flocculating agent mixture for a time sufficient to form flocs of a size sufficient for moderately rapid settling,
- thereafter promptly introducing the resulting mixture of water and flocs into an inclined rotating cylindrical screen, thereby causing dynamic movement of solids, with resulting consolidation of solids, and rapid and simultaneous removal and separation of water, and
- separately collecting the resulting water and the dewatered and consolidated solids.
1 more element
Dependencies are inferred from the claim text.