Patent ID: 8534464
Filing Date: 2013-09-17
Classification: B03D

Abstract:
1. A method for separating off insoluble components from sylvinite by suspending the sylvinite in saturated salt lye, adding a flocculant to the suspension, and subsequently adding a frother to the resultant composition, wherein the frother comprises at least one alcohol which has a hydrocarbon radical of 6 to 16 carbon atoms, and wherein, in addition to at least one alcohol, the frother further comprises at least one ether or ester, wherein a) the at least one ether corresponds to formula 1 b) the at least one ester is derived from monobasic or polybasic carboxylic acids having 2 to 30 carbon atoms and monohydric or polyhydric alcohols having 1 to 30 carbon atoms, or c) the at least one ether or ester is cyclic, wherein the ring size is from 6 to 30 carbon atoms.