Method and apparatus for thickening lime sludge

Details Method and apparatus for thickening lime sludge Method and apparatus for thickening lime sludge

1991-04-22

1992-09-22

Dawson, Robert A.

Liquid purification or separation

Processes

Separating

210391, 210396, 210402, 210408, 210413, 210777, 210791, 210797, B01D 3306, B01D 3346

Patent

active

051494485

ABSTRACT:
A drum filter for thickening lime sludge in which the lime sludge is thickened on a filter layer (precoat) formed by the lime sludge on the filter periphery. The filter is provided with high pressure liquid nozzles continuously reciprocating in the longitudinal direction of the drum in such a way that, during each rotation of the drum, part of the filtering layer is continuously detached and drops into a vat containing the lime sludge.

REFERENCES:
patent: 2403021 (1946-07-01), Peterson et al.
patent: 2839194 (1958-06-01), Lopker et al.
patent: 3075646 (1963-01-01), Giesse
patent: 3521751 (1970-07-01), Holthuis
patent: 4303524 (1981-12-01), Richards et al.
patent: 4547295 (1985-10-01), Carr, Jr. et al.
patent: 4725292 (1988-02-01), Williams
patent: 4795558 (1989-01-01), LaValley
patent: 4952325 (1990-08-01), Clifford
patent: 4995991 (1991-02-01), Ljokkoi et al.

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