COLLECTOR FOR FLOTATION OF LOAMY MINERALS FROM POTASSIUM ORES Russian patent published in 2012 - IPC B03D1/01 

FIELD: process engineering.

SUBSTANCE: invention relates to removal of loamy slimes from potassium ores by flotation. Proposed method comprises the use of collector selected from the group of ethoxylated fat amines of formula where R₁ and R₂ are independent hydrocarbon groups with 1-22 carbon atoms, n is the number exceeding on the average 15, preferably 20, and smaller than 100, preferably 80, more preferably 60, all the more preferably 50, furthermore preferably 40, and more preferably 35, and of formula where R₃ is hydrocarbon group with 8-22 carbon atoms, preferably 12-22, and more preferably 16-22, z is the number 1-3, preferably 1-2, and more preferably 1; X, Y and Y' are independent alkyl group with 1-4 carbon atoms, preferably methyl or group -(EO)_sH wherein EO is ethylene oxide group, s is the number, on the average, 5-50, preferably 7-50, mote preferably 9-45, all the more preferably 9-40, and furthermore preferably 11-35, while sum of all s makes, on the average, 15 or more, preferably 20 or more, and smaller than 100, preferably 80, more preferably 60, all the more preferably 50, furthermore preferably 40, and furthermore preferably 35 provided the, at least one of X, Y and Y' is the group -(EO)_sH.

EFFECT: higher efficiency of slime removal.

6 cl, 6 tbl, 3 ex