刚果(金)某锂辉石选矿试验研究  

Experimental study of the beneficiation of a spodumene in the DRC

作　　者：张书超 代定 盛涛 Zhang Shuchao;Dai Ding;Sheng Tao(Zhejiang Huayou Cobalt Co.,Ltd.)

机构地区：[1]浙江华友钴业股份有限公司

出　　处：《黄金》2024年第9期52-56,共5页Gold

摘　　要：刚果(金)某锂辉石Li_(2)O品位0.86%,属于低品位难选锂矿石。为实现该锂辉石高效综合利用,对其开展浮-磁联合试验研究。研究结果表明:在磨矿细度-0.074 mm占比75.0%,碳酸钠用量500 g/t,氯化钙用量140 g/t,氢氧化钠球磨机内用量700 g/t、浮选槽内用量200 g/t,捕收剂组合A(氧化石蜡皂与油酸质量比为1∶3)用量1650 g/t条件下进行一粗两扫三精一磁闭路试验,可获得Li_(2)O品位为5.67%、Li_(2)O回收率为77.71%的脱磁产品,Li_(2)O品位为4.51%、Li_(2)O回收率为10.51%的磁性产品。试验指标良好,为锂辉石资源综合利用提供重要参考依据。A spodumene from the Democratic Republic of Congo(DRC)has a Li_(2)O grade of 0.86%,classifying it as a low-grade and refractory lithium ore.To achieve efficient and comprehensive utilization of this spodumene,a joint flotation-magnetic separation test was conducted.The results indicate that under the conditions of grinding fineness of-0.074 mm accounting for 75.0%,the addition of 500 g/t sodium carbonate,140 g/t calcium chloride,700 g/t sodium hydroxide in the ball mill,and 200 g/t sodium hydroxide in the flotation cell,along with 1650 g/t of reagent combination A(a mixture of oxidized paraffin soap and oleic acid in a mass ratio of 1∶3),a closed-circuit test with roughing once,scavenging twice,cleaning three times,and magnetic separation once produced a non-magnetic product with a Li_(2)O grade of 5.67%and a Li_(2)O recovery rate of 77.71%.Additionally,a magnetic product with a Li_(2)O grade of 4.51%and a Li_(2)O recovery rate of 10.51%was obtained.The test results are favorable,providing a valuable reference for the comprehensive utilization of spodumene resources.

关 键 词：锂辉石 组合捕收剂 选别流程 浮-磁联合 药剂添加地点 

分 类 号：TD923[矿业工程—选矿]