use of a polyquaternary polymer; potassium ore foam flotation method for the recovery of potassium minerals; and pulp

摘要

summary use of a polyquaternary polymer; potassium ore foam flotation method for the recovery of potassium minerals; and pulp the present invention relates to the use of a polyquaternary polymer obtainable by reaction between (i) a dialkylamine having the structure r1r2nh, wherein r1 and r2 are independently hydrocarbyl groups having 1-3 carbon atoms; (ii) a bifunctional compound selected from the group consisting of epihalohydrins, diepoxides, epihalohydrin precursors and epoxides which, under alkaline conditions, are readily converted to the corresponding epoxy compounds and mixtures thereof; and (iii) optionally a polyfunctional amine selected from the group consisting of ammonia, primary amines, alkylenediamines having 2-6 carbon atoms and polyalkylene polyamines having the structure h2n- [r3- n (r4)] y-r3 -nh2, where y is an integer from 1 to 5, r3 is an alkylene radical having 2 to 6 carbon atoms and r4 is selected from the group consisting of hydrogen, a hydrocarbyl group having 1-3 atoms carbon and a β-aminoalkyl group having from 2 to 6 carbon atoms; as depressant in a method of potassium ores foam flotation.