Abstract:The rate of KCl recovery by froth flotation using low-grade carnallite is 70%-85%.Herein, a novel frother, dipropylene glycol butyl ether (DPNB), was prepared to increase the flotation efficiency of KCl recovery systems. DPNB could be applied at only half the dosage of the conventional frother methyl isobutyl carbinol (MIBC) and achieve a KCl recovery rate of 94.8%-98.6% with a high KCl grade (63.2%-66.5%).To date, these results are the best reported for pneumatic flotation. DPNB had a 10% higher maximum dynam… Show more
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