新型组合捕收剂浮选回收某铜尾矿中的微细粒锡石  

Flotation Recovery of Fine-grained Cassiterite from a Copper Tailings Using a Novel Combined Collector

作　　者：施雨航 宋宝旭 王帅 黄恩铭[1,2] 杨光 周兰 SHI Yuhang;SONG Baoxu;WANG Shuai;HUANG Enming;YANG Guang;ZHOU Lan(School of Mining Engineering,University of Science and Technology Liaoning,Anshan 114001,Liaoning,China;Intelligent Mine Research Institute of University of Science and Technology Liaoning,Anshan 114051,Liaoning,China)

机构地区：[1]辽宁科技大学矿业工程学院,辽宁鞍山114001 [2]辽宁科技大学智慧矿山研究院,辽宁鞍山114051

出　　处：《矿产保护与利用》2025年第2期102-107,共6页Conservation and Utilization of Mineral Resources

基　　金：辽宁科技大学博士启动基金项目:复杂稀有及贵金属矿产资源高效综合利用基础理论。

摘　　要：内蒙古某铜尾矿锡品位为0.47%,锡主要以锡石的形式存在,主要赋存于-0.043+0.005mm细粒级中,具有较高的回收价值。为提升锡石矿物的浮选回收率,采用实验室自制的以羟肟酸为主的新型组合捕收剂KDK-1,对该尾矿开展了浮选实验研究。首先对该尾矿进行脱泥,然后浮选除硫后浮选锡,在调整剂六偏磷酸钠120 g/t、捕收剂KDK-12000 g/t、辅助捕收剂PBL 50 g/t、起泡剂松醇油10 g/t的粗选条件下,采用“一粗三精二扫”的闭路浮选实验流程,可获得锡品位为6.07%、回收率为73.10%的锡精矿。该组合捕收剂对锡石捕收效果良好,优于丁铵黑药,可高效回收铜尾矿中锡资源,并为今后低品位微细粒锡石的高效回收和新型捕收剂的开发提供了参考。The flotation recovery of tin minerals in copper tailings with a tin grade of 0.47% was investigated through an experiment conducted in Inner Mongolia.Cassiterite,the primary form of tin,predominantly occurred in the fine grain size range of -0.043+0.005 mm and exhibited significant recovery potential.In order to improve the flotation recovery rate of cassiterite,a novel combined collector named KDK-1,composed mainly of hydroxamic acid and synthesized in the laboratory,was employed for conducting flotation experiments on the tailings.The tailings were first deslimed,followed by sulfur removal and subsequent tin flotation processes.Using 120 g/t sodium hexametaphosphate as a regulator,2000 g/t KDK-1 as a collector,50 g/t PBL as an auxiliary collector,and 10 g/t pine oil as a frother,closed circuit flotation experiments using"one rougher-three cleaners-two scavengers"process resulted in a tin concentrate with a grade of 6.07%and a recovery rate of 73.10%.The combined collector has a good collection effect on cassiterite,which is better than ammonium butyrate black,and can efficiently recover tin resources in copper tailings.It also provides a reference for the efficient recovery of low-grade fine cassiterite and the development of new collectors in the future.

关 键 词：羟肟酸 组合捕收剂 浮选 细粒锡石 铜尾矿 

分 类 号：TD923[矿业工程—选矿] TD926.4