复合捕收剂浮选回收白云鄂博某尾矿中的铌及其机理分析  

Recovery of Niobium from a Tailings of the Bayan Obo Mine by Flotation with a Composite Collector and Its Mechanism

作　　者：贺宇龙 赵增武 贾艳 崔久龙 孙盘石 贺旭然 HE Yulong;ZHAO Zengwu;JIA Yan;CUI Jiulong;SUN Panshi;HE Xuran(School of Mining and Coal Engineering,Inner Mongolia University of Science and Technology,Baotou 014000,Inner Mongolia,China;School of Materials Science and Engineering,Inner Mongolia University of Technology,Hohhot 010000,Inner Mongolia,China;Inner Mongolia Autonomous Region Coal Safety Mining and Utilization Engineering Technology Research Center,Baotou 014000,Inner Mongolia,China;Inner Mongolia Collaborative Innovation Center for Green Mining and Utilization of Coal,Baotou 014000,Inner Mongolia,China;Key Laboratory of Mining Engineering in Inner Mongolia Autonomous Region,Baotou 014000,Inner Mongolia,China;Baotou Iron and Steel(Group)Co.,Ltd.Baoshan Mining Company,Baotou 041010,Inner Mongolia,China)

机构地区：[1]内蒙古科技大学矿业与煤炭学院,内蒙古包头014000 [2]内蒙古工业大学材料科学与工程学院,内蒙古呼和浩特010000 [3]内蒙古自治区煤炭安全开采与利用工程技术研究中心,内蒙古包头014000 [4]内蒙古煤炭绿色开采与绿色利用协同创新中心,内蒙古包头014000 [5]内蒙古自治区矿业工程重点实验室,内蒙古包头014000 [6]包头钢铁(集团)有限责任公司宝山矿业公司,内蒙古包头041010

出　　处：《矿产保护与利用》2024年第5期40-46,共7页Conservation and Utilization of Mineral Resources

基　　金：国家重点研发计划专项项目(0901052102);内蒙古自治区直属高校基本科研业务费项目(2023RCTD002)。

摘　　要：为提高白云鄂博铌矿物的浮选回收效率,研究了单一苯甲羟肟酸(BHA)及苯甲羟肟酸+NPs(羟肟酸类)复合捕收剂对含铌尾矿中铌的浮选分离效果及吸附机理。结果表明,复合捕收剂(BHA+NPs)对铌矿物浮选的最佳质量配比为m(NPs)∶m(BHA)=0.35∶0.65,浮选闭路实验可获得Nb_(2)O_(5)品位为3.24%、回收率为83.03%的铌精矿;与采用单一BHA相比,精矿回收率基本一致,精矿品位提高0.53百分点。复合捕收剂可以显著提高精矿中铌矿物的含量,说明其对含铌矿物具有强捕收能力。XPS分析发现,辅助捕收剂NPs的存在不能改变铌铁矿表面N元素的化学环境,NPs与BHA在铌铁矿表面共同吸附,并促进BHA在矿物表面的吸附。In order to improve the flotation recovery efficiency of niobium minerals at Bayan Obo,a study was conducted on the flotation separation efficiency and adsorption mechanism of a single benzohydroxamic acid(BHA)and a composite collector of benzohydroxamic acid+NPs(hydroxamic acids)on niobium−containing tailings.The results showed that the optimum mass ratio of the composite collector(BHA+NPs)for flotation of niobium minerals was m(NPs)∶m(BHA)=0.35∶0.65.In the closed circuit flotation experiment,a niobium concentrate with a grade of 3.24%Nb_(2)O_(5) and a recovery of 83.03%was obtained.Compared to the single BHA,the concentrate grade was increased by 0.53 percentage points.The composite collector significantly increased the content of niobium minerals in the concentrate,indicating its strong collecting ability for niobium containing minerals.XPS analysis showed that the presence of the auxiliary collector NPs did not change the chemical environment of nitrogen elements on the surface of Niobite,and NPs and BHA were co−adsorbed on the surface of niobite,promoting the adsorption of BHA on the mineral surface.

关 键 词：复合捕收剂 苯甲羟肟酸 白云鄂博 稀土浮选尾矿 铌矿物 浮选 机理分析 

分 类 号：TD955[矿业工程—选矿] TD923