东北大学学报（自然科学版）

东北大学学报:自然科学版 ›› 2015, Vol. 36 ›› Issue (7): 1020-1024.DOI: 10.12068/j.issn.1005-3026.2015.07.023

• 资源与土木工程 • 上一篇    下一篇

2，3-二巯基丁二酸对黄铜矿和辉钼矿浮选行为的影响

李明阳， 魏德洲， 崔宝玉， 罗娜   

  1. (东北大学 资源与土木工程学院， 辽宁 沈阳110819)
  • 收稿日期:2014-04-28 修回日期:2014-04-28 出版日期:2015-07-15 发布日期:2015-07-15
  • 通讯作者: 李明阳
  • 作者简介:李明阳(1985-)，男，山东济宁人，东北大学博士研究生; 魏德洲(1956-)，男，河南南阳人，东北大学教授，博士生导师.
  • 基金资助:
    国家科技支撑计划项目(2012BAB01B03).

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

LI Ming-yang， WEI De-zhou， CUI Bao-yu， LUO Na   

  1. School of Resources & Civil Engineering， Northeastern University， Shenyang 110819， China.
  • Received:2014-04-28 Revised:2014-04-28 Online:2015-07-15 Published:2015-07-15
  • Contact: WEI De-zhou
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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.

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

Abstract: 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.

Key words: chalcopyrite, molybdenite, flotation separation, 2, 3-disulfanylbutanedioic acid, Zeta potential, frontier orbital

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