田菁胶对镜铁矿/石英浮选分离效果及作用机理研究  

Study on the Action Mechanism of Sesbania Gum on the Flotation Separation of Specularite/Quartz

作　　者：张鹏鹏 杨诚 高翔鹏 王海川 李明阳 ZHANG Pengpeng;YANG Cheng;GAO Xiangpeng;WANG Haichuan;LI Mingyang(School of Metallurical Engineering,Anhui University of Technology,Maanshan 243032,China;Key Laboratory of Metallurgical Emission Reduction&Resources Recycling,Ministry of Education,Anhui University of Technology,Maanshan 243032,China)

机构地区：[1]安徽工业大学冶金工程学院,安徽马鞍山243032 [2]安徽工业大学冶金减排与资源综合利用教育部重点试验室,安徽马鞍山243032

出　　处：《金属矿山》2023年第8期125-130,共6页Metal Mine

基　　金：安徽省高等学校科学研究重点项目(编号:2022AH050305);省部共建复杂有色金属资源清洁利用国家重点实验室开放基金项目(编号:CNMRCUKF2202);金属矿山安全与健康国家重点实验室开放课题(编号:2022-JSKSSYS-07)。

摘　　要：镜铁矿在自然界中常与石英伴生,为提高镜铁矿/石英反浮选分离效果,通过单矿物浮选试验、Zeta电位分析、吸附量测试以及X射线光电子能谱(XPS)研究了新型植物胶类抑制剂田菁胶在镜铁矿/石英浮选分离中的效果及吸附机理。单矿物浮选试验表明田箐胶粉对镜铁矿具有明显的选择抑制效果,在p H=10、抑制剂浓度30 mg/L条件下,镜铁矿回收率仅为22%,石英仍保持较高可浮性,回收率高达78%,两矿物回收率差异为56个百分点;Zeta电位及吸附量试验表明田菁胶在镜铁矿上的吸附强度明显高于石英;XPS结果证明产生抑制的主要原因是田菁胶中的羟基与镜铁矿表面的Fe产生了化学吸附。Specularite is commonly associated with quartz in the nature.In order to promote the separation efficiency of specularite/quartz reverse flotation though single mineral flotation test,Zeta potential analysis,an adsorption capacity test,and X-ray photoelectron spectroscopy(XPS)to investigate the flotation separation effect and adsorption mechanism of sesbania gum,a novel plant gum depressant,in specularite and quartz flotation.Single mineral flotation test shows that sesbania gum has obvious selective depression effect on specularite.Under the optimal flotation conditions of pH=10 and depressant concentration of 30 mg/L,the recovery rate of specularite only is 22%while quartz still keeps in high floatability and the recovery rate of quartz is 78%.At this time,the difference between the recovery rates of the two minerals is 56%;Zeta potential and adsorption capacity tests showed that the adsorption degree of sesbania gum on specularite was significantly stronger than that on quartz surface;XPS results showed that the main reason for the depression was the chemisorption of the hydroxyl group and Fe in the sesbania gum.

关 键 词：镜铁矿 石英 田箐胶 浮选 

分 类 号：TD923[矿业工程—选矿]