煤炭工程 ›› 2014, Vol. 46 ›› Issue (6): 121-124.doi: 10.11799/ce201406041

• 研究探讨 • 上一篇    下一篇

高灰细泥对煤炭分级浮选的影响研究

梁龙,彭耀丽,谭佳琨,谢广元   

  1. 中国矿业大学化工学院
  • 收稿日期:2013-07-17 修回日期:2013-10-26 出版日期:2014-06-10 发布日期:2014-06-16
  • 通讯作者: 彭耀丽 E-mail:peng_yaoli@163.com

Impact of high ash ultra-fine slime on classified flotation of coal

  • Received:2013-07-17 Revised:2013-10-26 Online:2014-06-10 Published:2014-06-16

摘要:

采用两种煤样分别进行常规混合浮选和分级浮选,运用多项式拟合的方法建立了浮选精煤产率、精煤灰分、浮选完善度与药剂用量的函数关系。通过对这一数学模型的分析表明对于裕隆煤样,分级浮选可明显改善浮选效果,而对于汶上煤样,分级浮选效果不佳。通过高灰细泥与不同粒度精煤颗粒静电作用的差异对这一现象进行了解释。

关键词: 煤泥, 分级浮选, 多项式拟合, 静电作用, 药剂用量

Abstract:

Two different coal samples were selected to perform traditional mixed flotation and classified flotation respectively and polynomial matching was utilized to build the functions of concentrate yield, concentrate ash content and flotation perfect degree with drug dosage. Through the analysis of this mathematic model it indicated that for Yulong coal sample classified flotation showed obvious advantage while for Wenshang coal sample classified flotation was not effective. Electrostatic interaction between high ash ultra-fine slime and coal particles of different size was analyzed to explain this phenomenon.

Key words: coal slime, classified flotation, polynomial matching, electrostatic interaction, drug dosage

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