文献类型：期刊文章

作　　者：陈建华[1] 蓝丽红[2,3] 廖幸锦[1]

机构地区：[1]广西大学资源与冶金学院,南宁530004 [2]广西大学化学化工学院,南宁530004 [3]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

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

基　　金：Project(51164001) supported by the National Natural Science Foundation of China;Project(0991082) supported by the Science and Technology Department of Guangxi,China;Project(GJR201147-12) supported by Guangxi Higher Education Institutes Talent Highland Innovation Team Scheme,China

年　　份：2013

卷　　号：23

期　　号：3

起止页码：824-831

语　　种：中文

收录情况：AJ、CAS、CSA、CSA-PROQEUST、CSCD、CSCD2013_2014、EBSCO、EI、IC、INSPEC、JST、SCIE、SCOPUS、WOS、ZGKJHX、普通刊

摘　　要：Pseudo glycolythiourea acid（PGA） was synthesized and used as depressant for flotation separation of Cu and Mo.The results indicate that a low amount of PGA has strong depression effect on chalcopyrite.Mo grade of 26.17% and recovery of 89.83% were achieved with rougher and scavenger one time and cleaners twice,while the recovery of Mo was deceased by 2% when Na2S was used as depressant.Measurement on adsorption of PGA on the mineral surface indicates that PGA and xanthate were adsorbed on mineral surface by competition,and PGA was adsorbed on chalcopyrite surface much stronger than on molybdenite surface.FTIR results indicate a chemical absorption process for PGA on chalcopyrite surface and a physical adsorption process on molybdenite surface.The frontier orbital calculation shows that the S atom is an active center,and the depression of PGA can be explained with the Fermi level of energy based on the electrochemical mechanism.

关 键 词：pseudo glycolythiourea acid（PGA）  CHALCOPYRITE MOLYBDENITE depressant  Cu-Mo separation  competitive adsorption  

分 类 号：TD923] TD95