芳香基黄原酸盐的合成及其对黄铜矿的浮选性能  

Synthesis of Two Aromatic Xanthates and Their Flotation Properties on Chalcopyrite

作　　者：钟宏[1] 曾强 王帅[1] ZHONG Hong;ZENG Qiang;WANG Shuai(College of Chemistry and Chemical Engineering,Central South University,Changsha 410083,China)

机构地区：[1]中南大学化学化工学院,湖南长沙410083

出　　处：《矿产保护与利用》2020年第2期17-22,共6页Conservation and Utilization of Mineral Resources

基　　金：国家高技术研究发展计划(2013AA064101)。

摘　　要：以苯甲醇、对甲基苯酚、二硫化碳和氢氧化钾为原料合成两种互为同分异构体的芳香基黄原酸盐——苯甲基黄原酸钾(BzX)和对甲基苯基黄原酸钾(MPX),并对其进行了结构表征。结果表明,二硫化碳与苯甲醇或对甲基苯酚优化的摩尔比为4 GA6FA 1,MPX优化的反应温度为30℃时,BzX优化的反应温度为25℃。采用单矿物浮选试验考查了两种药剂对黄铜矿的浮选性能,结果表明,BzX的浮选性能优于MPX。采用DFT计算和红外光谱分析考察了药剂在黄铜矿表面的吸附机理,证实了两种药剂在黄铜矿表面的吸附以化学吸附为主。Potassium benzyl xanthate(BzX)and potassium 4-methylphenyl xanthate(MPX),which are isomers of each other,were synthesized via the reaction of benzyl alcohol or p-methylphenol,carbon disulfide,and potassium hydroxide,and characterized by a variety of techniques.The results showed that the optimal molar ratio of carbon disulfide to benzyl alcohol or p-methylphenol was 4GA6FA1 and the optimal synthesis temperature for BzX was 30℃,and the optimal synthesis temperature for BzX was 25℃.The flotation performance and adsorption mechanism of BzX,MPX on the chalcopyrite were investigated.Flotation results and DFT theoretical calculations indicated that BzX exhibited better collecting performance compared with MPX.The adsorption mechanism of agents on the chalcopyrite surface was investigated by DFT calculation and infrared spectrum analysis.The results showed that the adsorption of the two collectors on the malachite surface was mainly chemical adsorption.

关 键 词：芳香基黄原酸盐 同分异构体 浮选 黄铜矿 DFT计算 

分 类 号：TD923.1[矿业工程—选矿] TD952.1