文献类型：期刊文章

作　　者：蓝丽红[1] 陈建华[2] 李玉琼[2] 蓝平[1] 杨卓[1] 艾光湧[1]

机构地区：[1]广西民族大学化学化工学院,广西高校化学与生物转化过程新技术重点实验室,南宁530006 [2]广西大学资源与冶金学院,南宁530004

出　　处：《Transactions of Nonferrous Metals Society of China》

基　　金：Projects(51464006,51164001)supported by the National Natural Science Foundation of China;Project(GJR201147-12)supported by Guangxi Higher Education Institutes Talent Highland Innovation Team Scheme,China;Project(2012MDZD038)supported by the Key Scientific Research Project of Guangxi University for Nationalities,China

年　　份：2016

卷　　号：26

期　　号：1

起止页码：272-281

语　　种：中文

收录情况：AJ、CAS、CSA、CSA-PROQEUST、CSCD、CSCD2015_2016、EBSCO、EI、IC、INSPEC、JST、SCI(收录号：WOS:000368817300030)、SCI-EXPANDED(收录号：WOS:000368817300030)、SCIE、SCOPUS、WOS、ZGKJHX、普通刊

摘　　要：Six kinds of galena with different impurities were synthesized and the effects of impurities on the floatability of galena were investigated. The thermodynamic and kinetic parameters on the galena surface were measured using microcalorimetry, and the adsorption configuration and energy of butyl xanthate on the surfaces of galena with different impurities were simulated by density functional theory. Flotation experiments showed that Ag and Bi significantly promoted the recovery of galena, while Zn, Sb, Mn, and Cu reduced the recovery of the flotation. Microthermokinetic results indicated that the absolute value of xanthate adsorption heat was directly proportional to the flotation recovery of galena. Adsorption heat and reaction rate coefficients of xanthate on galena containing Ag or Bi were larger than those on pure galena, but smaller on galena containing Cu or Sb. Additionally, the relationship between the heat of unsaturated adsorption of xanthate and the adsorption energy of impurity atom on galena surface was investigated.

关 键 词：GALENA impurity effect  floatation  XANTHATE ADSORPTION MICROCALORIMETRY density functional theory  

分 类 号：TD952] TD923.1