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US 12,330,988 B2Granted
Composition and method for the dewatering of aqueous suspensions
AssigneeSolenis Technologies, L.P.
InventorsZhaoqing Liu, Susete T. Breviglieri
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Abstract
Compositions and methods are provided for the recovery of minerals from mineral suspension, such as lime generated in Kraft pulping processes. More particularly, the composition comprises polyalkoxylate co-polymers, alkyleneamine alkoxylates, and optionally anionic surfactants, that when added to mineral dewatering process, aids in the recovery of the mineral.
Claims18
A composition for dewatering an aqueous suspension of minerals and water comprising:
- a) one or more polyoxyethylene-polyoxypropylene co-polymers,
- b) one or more alkyleneamine alkoxylates selected from the group consisting of alkoxylated ethylenediamine, diethylenetriamine, polyethylenepolyamine, propylenediamine, butylenediamine, hexylenediamine, and combinations thereof;
- and
- c) a lime mud suspension.
1 more element
A method for dewatering a lime mud suspension comprising:
- providing a lime mud suspension;
- adding to the lime mud suspension a composition comprising a) one or more polyoxyethylene-polyoxypropylene co-polymers, and b) one or more alkyleneamine alkoxylates selected from the group consisting of alkoxylated ethylenediamine, diethylenetriamine, polyethylenepolyamine, propylenediamine, butylenediamine, hexylenediamine, and combinations thereof;
- wherein the one or more polyoxyethylene-polyoxypropylene co-polymers comprise from about 5% to about 99% by weight actives of the total composition and the one or more alkyleneamine alkoxylates comprise from about 1% to about 95% by weight actives of the total composition;
- and
- dewatering the lime mud suspension.
2 more elements
Dependencies are inferred from the claim text.