Application of a New Depressor DLW-4 to Reverse Flotation of the Magnetic Mixed Concentrate from Anqian

Abstract

Abstract: In order to test the properties and floating behavior of a new depressor DLW-4 synthesized by Northeastern University，one roughing-one cleaning-three scavenging flotation process was conducted on the Magnetic Mixed Concentrate (MMC）of Anqian Mining Company in Anshan Iron and Steel Group.The results indicated that，at the slurry temperature of 40 ℃，optimum separation index could obtained with NaOH dosage of 800 g/t，depressor DLW-4 of 342 g/t，activator CaCl₂ dosage of 600 g/t，collector RA-715 of 480 g/t.Iron concentrate with iron grade of 68.08% and recovery of 88.20% is obtained via one roughing-one cleaning-three scavenging closed circuit flotation operation to dealing with MMC，Fe grade of which is 47.74%.Compared with regular depressor starch，DLW-4 could gain better reverse flotation indexes with relative fewer reagent dosage，and thus have promotional value.

Key words: Novel depressor DLW-4, Magnetic mixed concentrate, Reverse flotation

PAN Peng-Fei, ZHU Yi-Min, XU Dong-Lin, LI Wei, LI Yan-Jun, HAN Yue-Xin. Application of a New Depressor DLW-4 to Reverse Flotation of the Magnetic Mixed Concentrate from Anqian[J]. Metal Mine, 2015, 44(06): 74-77.

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Application of a New Depressor DLW-4 to Reverse Flotation of the Magnetic Mixed Concentrate from Anqian

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