Liquid purification or separation – Processes – Making an insoluble substance or accreting suspended...
Patent
1999-02-23
2000-09-26
Simmons, David A.
Liquid purification or separation
Processes
Making an insoluble substance or accreting suspended...
210728, 210729, 210773, C02F 152, C02F 154
Patent
active
061238554
ABSTRACT:
The present invention relates to dewatering of an aqueous slurry of calcium carbonate. More particularly, the present invention relates to the use of non-ionic surfactants in dewatering aqueous slurries of an aragonitic precipitated calcium carbonate. Calcium carbonate slurries dewatered using the non-ionic surfactants of the present invention have higher weight percent solids, decreased dispersant demand, and result in higher productivity.
REFERENCES:
patent: 4207186 (1980-06-01), Wang et al.
patent: 4596661 (1986-06-01), Gill et al.
patent: 4741838 (1988-05-01), Sharpe, Jr.
Hansen Colin Wayne
Wener, I Christopher Alan
Minerals Technologies Inc.
Morris Terry B.
Morrison Betsey J.
Powell Marvin J.
Simmons David A.
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