Modern Mining ›› 2024, Vol. 40 ›› Issue (03): 167-170.
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In order to improve the flotation index in Anqian Concentrator，the positive flotation test of high intensity magnetic separation concentrate was carried out. The effects of pH value，collector TD-II dosage，flotation machine speed and flotation temperature on flotation index were studied，and the contact angle of hematite and quartz single minerals was tested. The test results show that the raw ore with iron grade of 21.42% is under the conditions of pH value of 6.0，TD-II dosage of 900 g/t，flotation machine speed of 2 000 r / min and flotation temperature of 35 ° C，the iron concentrate with concentrate yield of 41.38%，iron grade of 43.54% and iron recovery of 84.11% was obtained by closed-circuit test of one rough⁃ ing，one cleaning and two scavenging.The collector TD-II can significantly increase the contact angle of he⁃ matite，and does not change the contact angle of quartz. The collector TD-II has good selectivity for hema⁃ tite. The results of this study can provide a basis for the optimization of flotation index of the plant.
