Back to results
US 9,896,366 B2Granted
Alternative additives to enhance slurry dewatering
AssigneeEcolab USA Inc.
InventorCarl N. Urbani
Life of this patent
Estimating the term…
Abstract
The invention provides methods and compositions for improving dewatering of mineral slurry. The method comprises adding an R-Succinic Compound (such as octadecenyl succinic acid, hexadecenyl succinic acid, and/or dodecenyl succinic acid) to the slurry. The R-Succinic Compound removes water that would otherwise be trapped within the filtered slurry cake.
Claims16
A method of enhancing dewatering of a mineral bearing slurry in a dewatering step of a mineral processing application, the method comprising:
- adding a wash fluid to the mineral bearing slurry;
- and
- adding to the mineral bearing slurry or to the wash fluid a composition comprising at least one R-succinic compound having a structure selected from formula (I) or formula (II), a conjugate acid-base of the R-succinic compound having the structure selected from formula (I) or formula (II), an anhydride of the R-succinic compound having the structure selected from formula (I) or formula (II), or any combination thereof, wherein formula (I) is
- and
- wherein R and R′ are independent, distinct, and represent alkyl, alkenyl, or aromatic hydrocarbon groups containing 1-30 carbon atoms.
2 more elements
Dependencies are inferred from the claim text.