工程科学学报，第38卷，第9期：1221-1226,2016年9月 Chinese Journal of Engineering,Vol.38,No.9:1221-1226,September 2016 D0l:10.13374/j.issn2095-9389.2016.09.004:http://journals.ustb.edu.cn 磨矿介质对典型硅酸盐矿物浮选的影响及机理 呼振峰12)四，孙传尧) 1)北京科技大学土木与环境工程学院，北京1000832)北京矿治研究总院，北京102600 ☒通信作者，E-mail:hu_zhf@(bgrimm.com 摘要研究在湿式磨矿条件下，十二胺和油酸钠作为捕收剂时，锆球和铁球作为磨矿介质对典型硅酸盐矿物浮选的影响. 通过对矿物表面动电位和X射线光电子能谱检测，分析磨矿介质对硅酸盐矿物浮选影响的机理.研究表明：十二胺作为捕收 剂，低于最佳浮选pH值时，锆球湿磨锆英石、绿柱石、锂辉石和石英的浮选回收率均高于铁球湿磨，H值继续升高，锆球湿磨 和铁球湿磨这四种硅酸盐矿物的浮选回收率相近：在H值2~12范围内，锆球湿磨和铁球湿磨长石的浮选回收率相近：油酸 钠作为捕收剂，相同H值条件下，锆球湿磨锆英石、绿柱石、锂辉石、长石和石英的浮选回收率大多低于铁球湿磨.检测结果 表明：锆球湿磨时，低于最佳浮选H值条件下，锆英石、绿柱石、锂辉石和石英表面电位低于铁球湿磨，因而十二胺作为捕收 剂时这四种矿物的浮选回收率高于铁球湿磨：铁球湿磨时，油酸钠作为捕收剂，锆英石、绿柱石、锂辉石、长石和石英表面F 含量明显增加，对这五种矿物起到活化作用，因而浮选回收率高于锆球湿磨. 关键词湿式磨矿：磨矿介质：硅酸盐：浮选 分类号TD913 Effects and mechanism of different grinding media on the flotation behaviors of typical silicate minerals HU Zheng feng,SUN Chuan-yao) 1)School of Civil and Environmental Engineering,University of Science and Technology Beijing,Beijing 100083,China 2)Beijing General Research Institute of Mining and Metallurgy,Beijing 102600,China Corresponding author,E-mail:hu_zhf@bgrimm.com ABSTRACT The flotation behavior of typical silicates was studied at wet grinding conditions with different grinding media (iron ball and zircon ball)when dodecylamine or sodium oleate was chosen as a collector.The mechanism of these systems was systematically il- lustrated through measuring the zeta potential of pure minerals and micro scanning by X-ray photoelectron spectroscopy (XPS).When dodecylamine is chosen for a collector,below the optimum pH value,the recoveries of zircon,beryl,spodumene and quartz are higher by zircon balls as grinding media than those by iron balls.Above the optimum pH value,the recoveries of these four silicates are very similar whether by iron balls or zircon balls.However,different grinding methods have little effects on the recovery of feldspar.The recoveries of these five silicates with iron balls as grinding media are higher than those with zircon as grinding media when sodium ole- ate is chosen as a collector.The results show that the zeta potential of zircon,beryl,spodumene and quartz is higher by zircon balls, compared with iron balls.So the recoveries of these four minerals are higher by zircon balls versus iron balls when dodecylamine is chosen as a collector.The Fe content on the surface of these five minerals is higher significantly by wet grinding with iron balls,com- pared with zircon balls.So the recovery of the former grinding methods is higher than the latter because of activation by iron ions. KEY WORDS grinding:silicate minerals:flotation:mechanisms 磨矿对矿物的浮选有着重要的意义，而磨矿过程是一个复杂的物理、化学及物理化学过程.国内外某 收稿日期：2015-10-23 基金项目：低品位钽铌资源低能耗强化综合回收技术研究资助项目(2012BAB10B01)工程科学学报，第 38 卷，第 9 期: 1221--1226，2016 年 9 月 Chinese Journal of Engineering，Vol． 38，No． 9: 1221--1226，September 2016 DOI: 10． 13374 /j． issn2095--9389． 2016． 09． 004; http: / /journals． ustb． edu． cn 磨矿介质对典型硅酸盐矿物浮选的影响及机理 呼振峰1，2) ，孙传尧2) 1) 北京科技大学土木与环境工程学院，北京 100083 2) 北京矿冶研究总院，北京 102600  通信作者，E-mail: hu_zhf@ bgrimm． com 摘 要 研究在湿式磨矿条件下，十二胺和油酸钠作为捕收剂时，锆球和铁球作为磨矿介质对典型硅酸盐矿物浮选的影响． 通过对矿物表面动电位和 X 射线光电子能谱检测，分析磨矿介质对硅酸盐矿物浮选影响的机理． 研究表明: 十二胺作为捕收 剂，低于最佳浮选 pH 值时，锆球湿磨锆英石、绿柱石、锂辉石和石英的浮选回收率均高于铁球湿磨，pH 值继续升高，锆球湿磨 和铁球湿磨这四种硅酸盐矿物的浮选回收率相近; 在 pH 值 2 ～ 12 范围内，锆球湿磨和铁球湿磨长石的浮选回收率相近; 油酸 钠作为捕收剂，相同 pH 值条件下，锆球湿磨锆英石、绿柱石、锂辉石、长石和石英的浮选回收率大多低于铁球湿磨． 检测结果 表明: 锆球湿磨时，低于最佳浮选 pH 值条件下，锆英石、绿柱石、锂辉石和石英表面电位低于铁球湿磨，因而十二胺作为捕收 剂时这四种矿物的浮选回收率高于铁球湿磨; 铁球湿磨时，油酸钠作为捕收剂，锆英石、绿柱石、锂辉石、长石和石英表面 Fe 含量明显增加，对这五种矿物起到活化作用，因而浮选回收率高于锆球湿磨． 关键词 湿式磨矿; 磨矿介质; 硅酸盐; 浮选 分类号 TD913 Effects and mechanism of different grinding media on the flotation behaviors of typical silicate minerals HU Zheng-feng1，2)  ，SUN Chuan-yao 2) 1) School of Civil and Environmental Engineering，University of Science and Technology Beijing，Beijing 100083，China 2) Beijing General Ｒesearch Institute of Mining and Metallurgy，Beijing 102600，China  Corresponding author，E-mail: hu_zhf@ bgrimm． com ABSTＲACT The flotation behavior of typical silicates was studied at wet grinding conditions with different grinding media ( iron ball and zircon ball) when dodecylamine or sodium oleate was chosen as a collector． The mechanism of these systems was systematically il￾lustrated through measuring the zeta potential of pure minerals and micro scanning by X-ray photoelectron spectroscopy ( XPS) ． When dodecylamine is chosen for a collector，below the optimum pH value，the recoveries of zircon，beryl，spodumene and quartz are higher by zircon balls as grinding media than those by iron balls． Above the optimum pH value，the recoveries of these four silicates are very similar whether by iron balls or zircon balls． However，different grinding methods have little effects on the recovery of feldspar． The recoveries of these five silicates with iron balls as grinding media are higher than those with zircon as grinding media when sodium ole￾ate is chosen as a collector． The results show that the zeta potential of zircon，beryl，spodumene and quartz is higher by zircon balls， compared with iron balls． So the recoveries of these four minerals are higher by zircon balls versus iron balls when dodecylamine is chosen as a collector． The Fe content on the surface of these five minerals is higher significantly by wet grinding with iron balls，com￾pared with zircon balls． So the recovery of the former grinding methods is higher than the latter because of activation by iron ions． KEY WOＲDS grinding; silicate minerals; flotation; mechanisms 收稿日期: 2015--10--23 基金项目: 低品位钽铌资源低能耗强化综合回收技术研究资助项目( 2012BAB10B01) 磨矿对矿物的浮选有着重要的意义，而磨矿过程 是一个复杂的物理、化学及物理化学过程． 国内外某