Device for washing metal-containing sludges

Details Device for washing metal-containing sludges Device for washing metal-containing sludges

1994-10-04

1995-10-24

Coe, Philip R.

Cleaning and liquid contact with solids

Apparatus

With heating, cooling or heat exchange means

134111, 134132, B08B 304

Patent

active

054601959

ABSTRACT:
A device for washing metal-containing sludges, comprising a screw feeder cylinder bearing blades placed between the turns and rotatably supported in both senses on its horizontal axis within a fixed cylinder containing a washing fluid. The fluid is circulated between the inside of the screw feeder cylinder and the gap between the same and the fixed cylinder. The exhausted washing fluid is removed and is replaced within the fixed cylinder by fresh washing fluid, according to the adjustment of a level control. The screw feeder cylinder is caused to rotate in both senses so as to cause the sludge to be washed to go forward and backward so meeting the washing fluid inside the cylinder itself according to a predetermined washing program. After such a program has been completed, the sludge now washed is removed after filtering.

REFERENCES:
patent: 847781 (1907-03-01), Judge et al.
patent: 1435285 (1922-11-01), Foster et al.
patent: 2288742 (1942-07-01), Rangohoff
patent: 2314871 (1943-03-01), De Back
patent: 3243264 (1966-03-01), Hickey
patent: 3961637 (1976-06-01), Owen, Sr.
patent: 4445523 (1984-05-01), Bruning et al.
patent: 4848107 (1989-07-01), Stoll

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