Method of flocculating clay-containing waste slurries

Details Method of flocculating clay-containing waste slurries Method of flocculating clay-containing waste slurries

1990-10-11

1992-04-14

Hruskoci, Peter

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

210728, 210730, 210732, 210734, 210907, 209 5, C02F 156

Patent

active

051045516

ABSTRACT:
A process for improving a solid/liquid separation of tails from acidulated or non-acidulated liquors obtained by leaching phosphate ores or waste comprising: adding a mixture of dissolved polymers of hydroxyalkyl cellulose and polyoxyethylene into an aqueous slurry of leached phosphate wastes to obtain flocks of phosphatic clay wastes; allowing said flocks to settle into an agglomerated mass; decanting luqiid from insoluble residues to obtain tails having a solid content from about 55 to 70%.

REFERENCES:
patent: 2937143 (1960-05-01), Goren
patent: 3020231 (1962-02-01), Colwell et al.
patent: 3338828 (1967-08-01), Clark
patent: 4251363 (1981-02-01), Chamberlain et al.
patent: 4265770 (1981-05-01), Thomas
patent: 4931190 (1990-06-01), Laros

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