黄铜矿与磁黄铁矿浮选分离行为及机理研究  

Study on Mechanism of Action of Xanthate in Flotation Separation of Chalcopyrite and Pyrrhotite

作　　者：曾维能 任浏祎[1,2] 曹雨琪 曾尚林 ZENG Weineng;REN Liuyi;CAO Yuqi;ZENG Shanglin(School of Resources and Environment Engineering,Wuhan University of Technology,Wuhan 430070,China;Hubei Key Laboratory of Mineral Resources Processing and Environment,Wuhan 430070,China;Changsha Research Institute of Mining and Metallurgy Co.,Ltd.,Changsha 410012,China)

机构地区：[1]武汉理工大学资源与环境工程学院,武汉430070 [2]矿物资源加工与环境湖北省重点实验室,武汉430070 [3]长沙矿冶研究院有限责任公司,长沙410012

出　　处：《有色金属（选矿部分）》2020年第6期30-35,共6页Nonferrous Metals（Mineral Processing Section）

基　　金：国家自然科学基金资助项目(51604041);湖北省自然科学基金资助项目(2019CFB533)。

摘　　要：通过黄铜矿与磁黄铁矿的单矿物浮选试验,研究矿浆pH值、捕收剂丁基黄药、抑制剂石灰对其浮选行为的影响。利用红外光谱、循环伏安测试技术,研究黄铜矿与磁黄铁矿浮选分离的机理。单矿物浮选试验结果表明,黄铜矿和磁黄铁矿浮选分离的最佳条件为pH=10,丁基黄药浓度为20mg/L,石灰浓度为300mg/L。红外光谱测试结果表明,丁基黄药在矿物表面氧化生成双黄药并通过化学作用吸附在矿物表面,石灰在磁黄铁矿表面生成氢氧化钙和硫酸钙的钙膜。循环伏安测试结果表明,在未添加丁基黄药时黄铜矿表面氧化生成疏水的硫单质和硫化铜,磁黄铁矿表面会生成亲水的氢氧化物。Through the single mineral flotation test of chalcopyrite and pyrite,the effects of pH value,xanthate as a collector,lime as inhibitor on flotation behavior were studied.The mechanism of flotation separation was studied by infrared spectroscopy and cyclic voltammetry.The results of single mineral flotation test showed that the optimal conditions for the flotation separation of chalcopyrite and pyrrhotite were pH=10,the concentration of butyl xanthate was 20 mg/L,and the concentration of lime was 300 mg/L.The results of infrared spectroscopy indicated that the butyl xanthate was oxidized on the surface of the mineral to form a double xanthate and adsorbed on the mineral surface by chemical adsorption.The lime formed a calcium film composed of calcium hydroxide and calcium sulfate on the surface of the pyrrhotite.Cyclic voltammetry showed that the surface of the chalcopyrite was oxidized to form hydrophobic elemental sulfur and copper sulfide without the addition of butyl xanthate,and a hydrophilic hydroxide was formed on the surface of the pyrrhotite.

关 键 词：黄铜矿 磁黄铁矿 浮选 红外光谱 循环伏安 

分 类 号：TD923[矿业工程—选矿]