东北大学学报（自然科学版）

东北大学学报:自然科学版 ›› 2014, Vol. 35 ›› Issue (6): 903-907.DOI: 10.12068/j.issn.1005-3026.2014.06.032

• 资源与土木工程 • 上一篇    下一篇

菱锰矿与石英浮选行为及其机理研究

冯雅丽1，杨志超1，李浩然2，张旭1   

  1. (1北京科技大学 土木与环境工程学院， 北京100083； 2中国科学院过程工程研究所 生化工程国家重点实验室， 北京100190)
  • 收稿日期:2013-04-14 修回日期:2013-04-14 出版日期:2014-06-15 发布日期:2014-04-11
  • 通讯作者: 冯雅丽
  • 作者简介:冯雅丽(1967-)，女，北京人，北京科技大学教授，博士生导师.
  • 基金资助:
    国际海域资源调查与开发专项(DY125-15-T-08)；国家高技术研究发展计划项目(2012AA062401).

The Flotation Behavior and Mechanism of Rhodochrosite and Quartz

FENG Yali1， YANG Zhichao1， LI Haoran2， ZHANG Xu1   

  1. 1Civil ＆ Environment Engineering School， University of Science ＆ Technology Beijing， Beijing 100083， China; 2State Key Laboratory of Biochemical Engineering， Institute of Process Engineering， Chinese Academy of Sciences， Beijing 100190， China.
  • Received:2013-04-14 Revised:2013-04-14 Online:2014-06-15 Published:2014-04-11
  • Contact: FENG Yali
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摘要： 研究了十二胺对菱锰矿与石英分离的浮选行为，以及调整剂水玻璃和六偏磷酸钠对菱锰矿和石英浮选的影响.结果表明，在pH=7～12时，十二胺对两种矿物都具有良好的捕收性；水玻璃和六偏磷酸钠均抑制石英而活化菱锰矿.人工混合矿浮选表明，在pH=7时六偏磷酸钠为调整剂，菱锰矿与石英可浮性相当，不可分离.紫外分光光度法结果表明，Mn2+在pH=7时可与石英发生静电吸附.红外分析结果显示，水玻璃可吸附于石英和菱锰矿表面，六偏磷酸钠可吸附于菱锰矿表面.

关键词: 菱锰矿, 石英, 浮选, 十二胺, 水玻璃, 六偏磷酸钠

Abstract: The flotation separation behavior of rhodochrosite and quartz was studied， and the effect of sodium silicate and sodium hexametaphosphate on flotation separation of rhodochrosite and quartz was investigated in dodecylamine flotation system. The results show that dodecylamine has good collecting ability for rhodochrosite and quartz in pH range of 7~12. Meanwhile， sodium silicate and sodium hexametaphosphate can remarkably activate the flotation performance of rhodochrosite. Conversely， quartz is inhibited by sodium silicate and sodium hexametaphosphate. The flotation tests of mixed minerals show that it is difficult to achieve the flotation separation of rhodochrosite and quartz when sodium hexametaphosphate is used as modifier at pH 7. UV spectrophotometry tests show that electrostatic adsorption exists between Mn2+ and quartz at pH 7. The FTIR measurements indicate that sodium silicate can adsorb on the rhodochrosite and quartz surfaces， sodium hexametaphosphate can adsorb on the rhodochrosite surface.

Key words: rhodochrosite, quartz, flotation, dodecylamine, sodium silicate, sodium hexametaphosphate

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