东北大学学报:自然科学版 ›› 2014, Vol. 35 ›› Issue (2): 286-289.DOI: 10.12068/j.issn.1005-3026.2014.02.030

• 资源与土木工程 • 上一篇    下一篇

硅藻土、钠长石及石英的可浮性研究

高莹,韩跃新,陈晓龙,朱一民   

  1. (东北大学 资源与土木工程学院, 辽宁 沈阳110819)
  • 收稿日期:2013-06-21 修回日期:2013-06-21 出版日期:2014-02-15 发布日期:2013-11-22
  • 通讯作者: 高莹
  • 作者简介:高莹(1983-),女,辽宁沈阳人,东北大学博士研究生;韩跃新(1961-),男,内蒙古赤峰人,东北大学教授,博士生导师;朱一民(1964-),女,辽宁沈阳人,东北大学教授.
  • 基金资助:
    国家高技术研究发展计划项目(2012AA030314);辽宁省高等学校创新团队项目(LT2012007).

Floatability Study of Diatomite,Albite and Quartz

GAO Ying, HAN Yuexin, CHEN Xiaolong, ZHU Yimin   

  1. School of Resources & Civil Engineering, Northeastern University, Shenyang 110819, China.
  • Received:2013-06-21 Revised:2013-06-21 Online:2014-02-15 Published:2013-11-22
  • Contact: HAN Yuexin
  • About author:-
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摘要: 实验考察了十二胺对硅藻土、钠长石、石英的捕收能力.通过ζ-电位、红外光谱检测对十二胺与硅藻土、钠长石、石英的作用机理进行了分析.浮选实验结果表明,pH为55~105,十二胺浓度为238×10-4mol/L时,钠长石和石英单矿物浮选回收率分别在92%和97%以上,而硅藻土的回收率在5%以下.ζ-电位分析结果表明,pH为55~105时,十二胺在钠长石和石英表面的吸附明显强于在硅藻土表面的吸附,这与浮选结果一致.红外光谱分析结果表明,pH为55时,十二胺在硅藻土、钠长石、石英表面均存在物理吸附、氢键作用,且在硅藻土表面的吸附强度相对弱,导致其可浮性差.

关键词: 硅藻土提纯, 十二胺, 浮选, 吸附机理, 回收率

Abstract: The flotation behavior of diatomite, albite and quartz was studied using laurylamine as the collector, and the acting mechanism of the collector with the minerals was analyzed by Zeta potential measuring and FTIR spectrum analyzing methods. The mineral flotation test results indicate that the recoveries of the albite and quartz were above 92 wt.% and 97 wt.%, and the recovery of diatomite was below 5 wt.%, in a slurry of pH ranging from 55 to 105 at a laurylamine concentration of 238×10-4mol/L. Zeta potential analysis indicates that the action between the laurylamine and the diatomite surfaces in a slurry of pH ranging from 55 to 105 is weaker than that between the laurylamine and albite/quartz sufaces, which confirms the flotation results of the minerals. The IR spectrum analysis shows that hydrogen bond and electrostatic adsorptions occur between the laurylamine and the diatomite, albite and quartz surfaces in a slurry of pH 55. However, these actions between the laurylamine and the diatomite surfaces are weaker than those between the laurylamine and albite/quartz sufaces, resulting in its bad floatability.

Key words: diatomite purification, laurylamine, flotation, adsorption mechanism, recovery

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