油酸钠浮选体系中硅线石与石英的分离机理  

Separation Mechanism of Sillimanite and Quartz in Sodium Oleate Flotation System

作　　者：牛艳萍 李亚 许洪峰 印万忠[3] 王英凯 张旭 NIU Yanping;LI Ya;XU Hongfeng;YIN Wanzhong;WANG Yingkai;ZHANG Xu(The Research Center of Experimental Testing for Geology and Minerals in Heilongjiang Province,Harbin 150030,China;Heilongjiang Mining Group Co.,Ltd.,Harbin 150036,China;School of Resources&Civil Engineering,Northeastern University,Shenyang 110819,China)

机构地区：[1]黑龙江省地质矿产实验测试研究中心,哈尔滨150030 [2]黑龙江省矿业集团有限责任公司,哈尔滨150036 [3]东北大学资源与土木工程学院,沈阳110819

出　　处：《有色金属（选矿部分）》2021年第1期122-127,共6页Nonferrous Metals（Mineral Processing Section）

基　　金：矿物加工科学与技术国家重点实验室开放基金资助项目(BGRIMM-KJSKL-2017-11)。

摘　　要：通过硅线石与石英的浮选规律试验、浮选药剂的溶液化学分析、矿物表面的动电位测定、红外光谱(FTIR)分析和X射线光电子能谱(XPS)分析,探讨硅线石和石英的分离机理。结果表明,在弱碱性矿浆中,元素Fe以形成氢氧化物沉淀形式在硅线石和石英表面吸附,与油酸根阴离子能够产生化学作用,说明元素Fe能够活化油酸钠与硅线石、石英表面的吸附作用;柠檬酸中阴离子可以消除元素Fe的活化作用,去活后的石英与油酸钠不会发生明显的吸附作用,而硅线石表面的元素Al仍然可以与油酸根阴离子发生化学作用,使硅线石仍然具有较好的可浮性,增加了硅线石和石英的浮游差,从而产生比较好的分离效果。Through the flotation test of sillimanite and quartz,solution chemical analysis of flotation reagent,infrared spectroscopy(FTIR)and X-ray photoelectron spectroscopy(XPS)analysis to study the separation mechanism of sillimanite and quartz.The results show that the element Fe is adsorbed on the surface of the sillimanite and quartz in the form of a hydroxide precipitation weak alkaline pulp,and can react with the oleate anion,indicating that the element Fe can activate the adsorption of sodium oleate on the surface of sillimanite and quartz.The anion in citric acid can eliminate the activation of the element Fe,and the deactivated quartz and sodium oleate will not have obvious adsorption,while the element Al on the surface of the sillimanite can still chemically interact with the oleate anion,so that the sillimanite still has good flotability,and the difference in flotation between sillimanite and quartz is increased,thereby producing a better separation effect.

关 键 词：硅线石 石英 浮选 X射线光电子能谱分析 

分 类 号：TD923.1[矿业工程—选矿]