煤炭工程 ›› 2020, Vol. 52 ›› Issue (9): 143-146.doi: 10.11799/ce202009029

• 研究探讨 • 上一篇    下一篇

药剂C-1对氧化煤浮选的促进机理研究

陈阳,解维伟   

  1. 1. 中国矿业大学(北京)
    2. 中国矿业大学(北京)化学与环境工程学院
  • 收稿日期:2020-03-26 修回日期:2020-06-09 出版日期:2020-09-15 发布日期:2020-11-24
  • 通讯作者: 解维伟 E-mail:xwwcumtb@126.com

Study on the Mechanism of Agent C-1 on the Flotation Effect of Oxidized Coal

  • Received:2020-03-26 Revised:2020-06-09 Online:2020-09-15 Published:2020-11-24

摘要: 针对氧化煤浮选效率低难以回收利用的问题,研制了一种新型捕收剂C-1。首先,将表面活性剂(酯类表面活性剂、Span80)和单馏程非极性烃类油按不同比例混合,通过浮选试验结果确定最佳质量比为5%。然后,将C-1应用于氧化煤浮选试验,对比其与传统药剂的浮选效果,得到最佳药剂使用量,利用红外光谱和润湿热测量等手段研究了C-1对氧化煤浮选的促进机理。结果表明,C-1通过化学吸附与氧化煤表面的含氧官能团结合,提高煤粒表面疏水性,使煤粒与气泡结合更稳定,从而提高精煤产率、可燃体回收率及浮选完善指标。当C-1用量1200g/t,仲辛醇用量150g/t时,精煤产率为 64.51%,精煤灰分最低为 11.96%,浮选完善指标为 37.87%,此时氧化煤的浮选效果最佳。

关键词: 氧化煤, 浮选, 复合药剂, 红外光谱, 润湿热

Abstract: Abstract: A study is made of the promoting effect on flotation of oxidized coal product by agent C-1,compared with the flotation effect of traditional agents. Promoting mechanism of agent C-1 by Infrared Spectroscopy and Wetting Heat. The result show that the agent C-1 can be chemically adsorbed on the oxygen-containing functional groups on the surface of the oxidized coal, thereby improving the hydrophobic property of the surface of the coal particles. It significantly improves the yield of clean coal, the recovery rate of combustibles, and the perfection of flotation, and reduces the ash content of clean coal. When the amount of foaming agent is 100g / t and the amount of agent C-1 is 1200g / t, the minimum coal ash content is 12.02%, the flotation perfection index is36.35%, and the flotation effect is the best.

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