Method for settling calcium carbonate

Details Method for settling calcium carbonate Method for settling calcium carbonate

1985-02-04

1986-06-24

Hruskoci, Peter

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

209 5, 210734, C02F 156

Patent

active

045966613

ABSTRACT:
The instant invention is directed to a method of settling fine calcium carbonate solids from a suspension comprising water and calcium carbonate, comprising adding to said suspension an effective amount of an admixture comprising: (a) an anionic polyelectrolyte; and (b) an anionic surfactant, wherein said polyelectrolyte/surfactant ratio ranges from 10:1 to 1:5, by weight.

REFERENCES:
patent: 3418237 (1968-12-01), Boothe et al.
patent: 3493501 (1970-02-01), Eck
patent: 3692673 (1972-09-01), Hoke
patent: 3776892 (1973-12-01), Bleyle
patent: 3836512 (1974-09-01), Chu et al.
patent: 4146473 (1979-03-01), Edelmann et al.
patent: 4210531 (1980-07-01), Wang et al.
patent: 4331785 (1982-05-01), Chamberlin et al.
patent: 4342653 (1982-08-01), Halverson
patent: 4509987 (1985-04-01), Farrar et al.

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