Abstract: Regard the sodium oleate as collector,the regulatory effects of ultrasonic treatment on the interactions among hematite,quartz,and chlorite mixed ores were investigated in both direct and reverse flotation systems. The experimental results indicate that under suitable ultrasonic conditions,the interaction of chlorite in the hematite flotation system can be effectively regulated. When a 200 W ultrasonic power is used to treat the mixed ore containing 10% chlorite for 1 minute,the iron recovery in the concentrate of the direct flotation system increases by 3. 89 percentage points,and that in the reverse flotation system increases by 3. 67 percentage points. Simultaneously,the regulatory mechanism of ultrasonic treatment on the interactions among hematite,quartz,and chlorite was analyzed through SEM-EDS detection,specific surface area analysis,and reagent adsorption amount detection. The research findings reveal that ultrasonic treatment can desorb the fine chlorite particles coated on the hematite surface,which is conducive to the adsorption of flotation reagents on the mineral surface and promotes both the recovery of hematite and the removal of chlorite,thus providing significant theoretical support for the flotation separation of low-grade and complex hematite resources containing chlorite. 

Key words: hematite,chlorite,ultrasonic treatment,cover,interaction effects