煤炭工程 ›› 2013, Vol. 45 ›› Issue (11): 105-107.doi: 10.11799/ce201311035

• 研究探讨 • 上一篇    下一篇

不同细泥组分对煤泥浮选的影响

梁龙,谭佳琨,谢广元,彭耀丽   

  1. 中国矿业大学化工学院
  • 收稿日期:2013-01-29 修回日期:2013-02-27 出版日期:2013-11-10 发布日期:2013-11-11
  • 通讯作者: 彭耀丽 E-mail:peng_yaoli@163.com

The impact of different ultra-fine slime on coal flotation

  • Received:2013-01-29 Revised:2013-02-27 Online:2013-11-10 Published:2013-11-11

摘要:

将煤泥当中-0.074 mm的细泥按密度分为三个组分:-1.4 kg/L,1.4~1.8 kg/L,+1.8 kg/L。将这三种不同的细泥分别掺入到+0.074 mm的原煤中进行分步释放试验,并与原煤以及+0.074 mm原煤的分步释放试验结果进行比较,结果表明-1.4 kg/L密度级细泥会促进原煤中+0.074 mm的粗粒煤泥的浮选,而1.4~1.8 kg/L,+1.8 kg/L密度级细泥会抑制+0.074 mm粗粒煤泥的浮选,且二者的抑制程度相当。

关键词: 煤泥浮选, 细泥, 分步释放, 药剂吸附

Abstract:

The ultra-fine particles which is finer than 0.074 mm in coal slime were divided into three parts: -1.4 kg/L, 1.4~1.8 kg/L and +1.8 kg/L. The three parts were added to the raw coal slime coarser than 0.074 mm respectively. And then timed-release flotation experiments were conducted for these three samples, along with the raw sample and the +0.074 mm raw sample. The results of these five experiments were compared together. It showed that the -1.4kg/L ultra-fine slime would promote the flotation of +0.074 mm raw coal slime whereas the 1.4~1.8 kg/L and +1.8 kg/L ultra-fine slime were harmful to it and the extent of their harm was similar.

Key words: coal slime flotation, ultra-fine slime, timed-release flotation, agent adsorption

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