Particle separation and drying apparatus

Details Particle separation and drying apparatus Particle separation and drying apparatus

1993-10-13

1995-10-24

Dawson, Robert A.

Liquid purification or separation

With heater or heat exchanger

34 58, 34132, 134109, 2103601, 210369, 210373, 210374, 210375, 2103801, 210391, 210396, 210402, 210408, 2104161, B01D 3306, B01D 3518

Patent

active

054607175

ABSTRACT:
An apparatus which performs solids particles separation from a liquids/solids slurry, and subsequent drying of such solids particles, within a single enclosure. Further processing functions, such as reslurry washing, plug washing, crystal growth and other reactions, can also be carried out within that single enclosure. The single enclosure comprises a partly perforated centrifuge drum which can be rotated about a vertical axis at a fast speed at which the centrifugal effects on material in the drum are substantial so that partly dried solids collect in a substantially cylindrical form on the side wall of the drum, and a slow speed at which the centrifugal effects on material in the drum are negligible; a stripping mechanism which is displaceable within the drum, when the drum is rotated at slow speed, for dislodging solids which have been built up on the side wall of the drum during rotation at high speed; and means for heating at least a bottom part of the drum on which partly dried solids collect when dislodged by the stripping mechanism from the side wall of the drum. The solids can themselves thus be heated, or otherwise processed, to cause evaporation therefrom of any remaining liquid.

REFERENCES:
patent: 2953250 (1966-09-01), Jung et al.
patent: 3446431 (1966-09-01), Marchal et al.
patent: 3998391 (1976-12-01), Daub
patent: 4000074 (1976-12-01), Evans
patent: 4220538 (1980-09-01), Zeppenfeld et al.
patent: 4412865 (1983-11-01), Schmidt
patent: 4691448 (1987-09-01), Alstetter et al.
patent: 4770772 (1983-11-01), Kuwajima et al.
patent: 5183568 (1993-02-01), Lescovich

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