铝酸盐荧光粉中绿粉与蓝粉的浮选研究  

Flotation Study of Green-emitting Phosphors and Blue-emitting Phosphors in Aluminate Phosphor

作　　者：苏冕 梅光军[1] 于明明 雷泽锐 SU Mian;MEI Guangjun;YU Mingming;LEI Zerui(School of Resource and Environmental Engineering,Wuhan University of Technology,Wuhan 430070,China;School of Resource and Environmental Engineering,Jiangxi University of Science and Technology,Ganzhou 341000,China;Collaborative Innovation Center for Development and Utilization of Rare Metal Resources Co-sponsored by Ministry of Education and Jiangxi Province,Jiangxi University of Science and Technology,Ganzhou 341000,China)

机构地区：[1]武汉理工大学资源与环境工程学院,湖北武汉430070 [2]江西理工大学资源与环境工程学院,江西赣州341000 [3]江西理工大学稀有稀土资源开发与利用省部共建协同创新中心,江西赣州341000

出　　处：《金属矿山》2023年第12期149-153,共5页Metal Mine

基　　金：中国科协青年人才托举工程项目(编号:2022QNRC001);江西省自然科学基金项目(编号:20224BAB204038);江西理工大学稀土资源开发与利用省部共建协同创新中心开放课题项目(编号:JXUST-XTCX-2022-05);省部共建特色金属材料与组合结构全寿命安全国家重点实验室项目(编号:2022GXYSOF11)

摘　　要：荧光粉中的稀土氧化物具有极高的回收利用价值。为实现细粒级稀土铝酸盐荧光粉绿粉(Ce,Tb)MgAl_(11)O_(19)和蓝粉BaMgAl_(10)O_(17):Eu^(2+)的分离,对其进行了浮选试验,探究了pH值、药剂种类和用量对荧光粉浮选回收效率的影响。试验结果表明在酸性条件下,相比海藻酸钠和硅酸钠,木质素磺酸钠(SL)对蓝粉的抑制效果更好。在pH=5、抑制剂SL用量12500g/t、分散剂碳酸钠用量26500 g/t、捕收剂十二烷基硫酸钠用量5000 g/t的条件下,可得到回收率为68.04%、稀土氧化物品位15.79%的绿粉精矿和回收率为68.46%、稀土氧化物品位6.85%的蓝粉精矿。Rare-earth oxides in phosphors are of great value for recycling.To achieve the separation of the fine-grained rare-earth aluminate phosphor green-emitting phosphors(Ce,Tb)MgAl_(11)O_(19) and blue-emitting phosphors BaMgAl_(10)O_(17):Eu^(2+),flotation tests were conducted in this study to investigate the effects of pH,agent type and dosage on the flotation recovery efficiency of phosphor.The test results showed that under acidic conditions,sodium lignosulfonate(SL)was more effective in inhibiting the blue-emitting phosphors compared to sodium alginate and sodium silicate.Under the conditions of pH=5,inhibitor SL dosage 12500 g/t,dispersant sodium carbonate dosage 26500 g/t and trap sodium dodecyl sulfate dosage 5000 g/t,greenemitting phosphors concentrate with 68.04%recovery and 15.79%grade of rare earth oxides and blue-emitting phosphors concentrate with 68.46%recovery and 6.85%grade of rare earth oxides could be obtained.

关 键 词：铝酸盐荧光粉 浮选 木制素磺酸钠 稀土氧化物 

分 类 号：TD923[矿业工程—选矿]