Experimental Study on Separation of Ultra-fine Copper-Molybdenum Bulk Concentrate by Pulsating High Gradient Magnetic Separation
Chalcopyrite is paramagnetic and molybdenite is diamagnetic,and thus they are separatable through high gra-dient magnetic separation.A SLon-100 periodic pulsating high gradient magnetic separator was used to separate a roughing con-centrate of chalcopyrite-molybdenite co-flotation from Jinduicheng Molybdenum Industry,which assays 14.42％Cu and 12.40％Mo,with-0.019 mm ultra-fine fraction weighting 83.80％.The results showed that under the conditions of a pulsa-ting stroke of 5 mm,a pulsating frequency of 150 r/min,a rod diameter of 1.5 mm in matrix,a slurry flow rate of 2.0 cm/s,a roughing magnetic induction of 1.6 T and a scavenging magnetic induction of 1.7 T,a copper concentrate with a yield of 48.64％,Cu grade of 22.82％,Mo grade of 4.40％,and Cu recovery of 77.82％and a molybdenum concentrate with a yield of 51.36％,Cu grade of 6.16％,Mo grade of 19.96％,and Mo recovery of 82.73％were respectively obtained via one roughing and one scavenging pulsating high gradient magnetic separation process.This effective separation for the ultra-fine chalcopyrite-molybdenite concentrate demonstrated the availability of pulsating high gradient magnetic separation technology for separating the ultra-fine copper-molybdenum concentrate,providing a valuable reference for the environment-friendly separation of similar copper-molybdenum bulk concentrates.
pulsating high gradient magnetic separationultra-fine copper-molybdenum separationseparation process
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维普
