METHOD OF OBTAINING POTASSIUM CHLORIDE FROM POTASSIUM-CONTAINING ORES Russian patent published in 2000 - IPC

FIELD: floatation of potassium chloride. SUBSTANCE: method includes grinding, removal of slime accompanied by obtaining slime, sands (+25 mm) and salt finely- dispersed product which is preliminarily thickened to density of 60 to 70% of solid and conditioned with emulsion of amine and apolar reagent; then suspension is liquefied by circulating salt solution to density of 8 to 12% and is floated in pneumatic pulsating floatation machine obtaining final concentrate and tailings. EFFECT: reduced expenses for obtaining slimeless finely-dispersed product; possibility of obtaining quality concentrate in floatation.