脉动高梯度磁选分离微细铜钼混合精矿试验研究  

Experimental Study on Separation of Ultra-fine Copper-Molybdenum Bulk Concentrate by Pulsating High Gradient Magnetic Separation

作　　者：杨康宁 曾剑武 杨晶 黄会春 谢金成 邵延海[1] 陈禄政[1] YANG Kangning;ZENG Jianwu;YANG Jing;HUANG Huichun;XIE Jincheng;SHAO Yanhai;CHEN Luzheng(Faculty of Land Resource Engineering,Kunming University of Science and Technology,Kunming 650093,China;SLon Magnetic Separator Co.,Ltd.,Ganzhou 341000,China)

机构地区：[1]昆明理工大学国土资源工程学院,云南昆明650093 [2]赣州金环磁选科技装备股份有限公司,江西赣州341000

出　　处：《金属矿山》2024年第2期171-176,共6页Metal Mine

基　　金：国家自然科学基金项目(编号:52104255,52264029);云南省基础研究计划项目(编号:202201AU070139)。

摘　　要：黄铜矿(顺磁性)和辉钼矿(逆磁性)存在微弱的磁性差异,可以通过高梯度磁选分离。采用SLon-100型周期式脉动高梯度磁选机,对金堆城钼业某铜钼混合浮选粗精矿(铜、钼品位分别为14.42%和12.40%、-0.019 mm产率83.80%)进行了黄铜矿与辉钼矿分离试验研究。结果表明,在脉动冲程为5 mm、脉动冲次为150 r/min、棒介质直径为1.5 mm、矿浆流速为2.0 cm/s、粗选磁感应强度为1.6 T、扫选磁感应强度为1.7 T的条件下,经1粗1扫脉动高梯度强磁选,获得了产率48.64%、铜品位22.82%、钼品位4.40%和铜回收率77.82%的铜精矿,及产率51.36%、铜品位6.16%、钼品位19.96%和钼回收率82.73%的钼精矿,实现了有效的微细粒铜钼矿物分离。研究结果证明了脉动高梯度磁选分离微细粒铜钼混合精矿的有效性,可以为类似铜钼混合精矿的绿色分离提供指导。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.

关 键 词：脉动高梯度磁选 微细铜钼分离 分离工艺 

分 类 号：TD924[矿业工程—选矿]