N-丁氧基丙基-S-[2-(肟基)丙基]二硫代氨基甲酸酯对黄铜矿的浮选行为及吸附机理  

Flotation behavior and adsorption mechanism of BOPHPDT to chalcopyrite

作　　者：肖静晶 XIAO Jing-jing(Hunan Key Laboratory for the Design and Application of Actinide Complexes,School of Chemistry and Chemical Engineering,University of South China,Hengyang 421001,China;School of Chemistry and Chemical Engineering,Central South University,Changsha 410083,China;Hunan Academy of Forestry,Changsha 410004,China)

机构地区：[1]南华大学化学化工学院,天然锕系元素配合物设计及应用湖南省重点实验室,衡阳421001 [2]中南大学化学化工学院,长沙410083 [3]湖南省林业科学院,长沙410004

出　　处：《中国有色金属学报》2021年第8期2247-2257,共11页The Chinese Journal of Nonferrous Metals

基　　金：南华大学校级科研基金资助项目(2017XQD16)。

摘　　要：考察了N-丁氧基丙基-S-[2-(肟基)丙基]二硫代氨基甲酸酯(BOPHPDT)对黄铜矿的浮选行为,研究其与八种金属离子的作用,采用微浮选、接触角、原位电化学扫描(SECM)、X射线光电子能谱(XPS)对BOPHPDT浮选黄铜矿的吸附机理进行研究。结果表明:BOPHPDT对黄铜矿的浮选优于丁黄药,优选pH值范围为4~10,其吸附于黄铜矿表面增大其接触角,增强其表面疏水性。XPS分析进一步表明,BOPHPDT分别通过其分子中NH—C=S和C=N—OH官能团与黄铜矿表面形成Cu—N、Cu—S和Cu—O键化学吸附于黄铜矿表面。The flotation behavior of N-butoxypropyl-S-[2-(hydroxyimino)propyl]dithiocarbamate ester(BOPHPDT)to chalcopyrite was investigated,the interactions between BOPHPDT and eight metal ions were researched,and the adsorption mechanism of BOPHPDT to chalcopyrite was studied by employing micro-flotation,contact angle,in-situ SECM,XPS.The results demonstrate that BOPHPDT exhibits superior flotation performance for chalcopyrite in comparison with xanthate and the preferable pH values for its attachment to chalcopyrite surfaces are from 4 to 10,and it adsorbs on chalcopyrite surface to increase its contact angle and enhance its surface hydrophobicity.XPS further elucidates that BOPHPDT might be chemisorption to chalcopyrite surface through its NH—C=S and C=N—OH groups to form Cu—N,Cu—S and Cu—O bonds,respectively.

关 键 词：N-丁氧基丙基-S-[2-(肟基)丙基]二硫代氨基甲酸酯 黄铜矿 浮选 吸附机理 

分 类 号：TQ311[化学工程—高聚物工业] O63[理学—高分子化学]