2,3-二巯基丁二酸对黄铜矿和辉钼矿浮选行为的影响  

Flotation Behavior of Chalcopyrite and Molybdenite in the Presence of 2,3-Disulfanylbutanedioic Acid

作　　者：李明阳[1] 魏德洲[1] 崔宝玉[1] 罗娜[1] 

机构地区：[1]东北大学资源与土木工程学院,辽宁沈阳110819

出　　处：《东北大学学报（自然科学版）》2015年第7期1020-1023,1041,共5页Journal of Northeastern University(Natural Science)

基　　金：国家科技支撑计划项目(2012BAB01B03)

摘　　要：以煤油为捕收剂,研究了2,3-二巯基丁二酸（DMSA）对黄铜矿和辉钼矿可浮性的影响,并通过动电位分析和量子化学计算探讨了DMSA与矿物之间的作用机理.浮选结果表明,DMSA对黄铜矿抑制作用较强,而对辉钼矿抑制很弱;获得对黄铜矿较好抑制效果时,其用量仅为硫化钠的1/9~1/13.动电位测试结果显示,DMSA在黄铜矿和辉钼矿表面均有吸附,但在黄铜矿表面的吸附作用强于辉钼矿.量子化学计算表明,DMSA与黄铜矿发生电化学作用,而不与辉钼矿发生反应.The effect of 2, 3-disulfanylbutanedioic acid（ DMSA） on the flotability of chalcopyrite and molybdenite with kerosene as a collector was investigated. The interaction mechanism between the DMSA and minerals was explored via Zeta potential analysis and quantum-chemistry calculation. Flotation results showed that DMSA has strong depression effect on chalcopyrite but slightly inhibition effect on molybdenite. Optimal separation efficiency is obtained when DMSA concentrate was only 1 /9 ~ 1 /13 of sodium sulphide. According to the results of Zeta potential test,DMSA adsorbs both on chalcopyrite and molybdenite surface,but the adsorption ability of DMSA on chalcopyrite surface is much stronger than that on molybdenite.The results of quantum-chemistry calculation indicated that electrochemical reaction only occurs between DMSA and chalcopyrite but not between DMSA and molybdenite.

关 键 词：黄铜矿 辉钼矿 浮选分离 2 3-二巯基丁二酸 动电位 前线轨道 

分 类 号：TD923.14[矿业工程—选矿]