METHOD FOR FLOTATION ENRICHMENT OF SYLVINITE ORES Russian patent published in 2022 - IPC B03D1/02 B03B1/00 

FIELD: mineral processing.

SUBSTANCE: proposed invention relates to the field of mineral processing and can be used in the chemical industry, in particular in the technology of flotation enrichment of sylvinite ores to increase the efficiency of flotation and/or reduce the consumption of flotation reagents. Method for flotation enrichment of sylvinite ore includes crushing, grinding, desliming, conditioning ore suspension with flotation reagents, carrying out the froth flotation process with subsequent separation of froth and chamber flotation products. When conditioning an ore suspension with flotation reagents, first a depressant pre-treated with ultrasound is introduced into it, and conditioning is carried out with a depressant solution. After that, the composition of reagents of the “collector-foamer-activator” composition, pre-treated with ultrasound, is introduced into the ore suspension, conditioning is continued, after which the froth flotation process is carried out. Sonication of the depressant solution is carried out with a frequency of 22±1.65 kHz, a power of 168-336 W, a duration of 1.5-2.5 minutes. The sonication of the composition of the reagents of the "collector-foamer-activator" composition is carried out with a frequency of 22±1.65 kHz, a power of 252-420 W, a duration of 2.5-3 minutes. The composition of the reagents composition "collector-blower-activator" contains the following ratio of components, % wt.: collector - emulsion of high molecular weight amine hydrochloride 0.80; foaming agent - glycol ether of composition 2,2,4-trimethyl-pentadiol-1,3-monoisobutyrate 0.20-0.30; activator - catalytic gas oil 0.30; water is the rest.

EFFECT: increasing the efficiency of flotation of sylvinite ores, namely, increasing the degree of extraction of potassium chloride into flotation concentrate while reducing the consumption of flotation reagents.

9 cl, 1 tbl, 7 ex