煤炭工程 ›› 2024, Vol. 56 ›› Issue (5): 202-210.doi: 10.11799/ce202405030

• 研究探讨 • 上一篇    下一篇

旋流微泡浮选柱处理难浮煤泥的研究现状

卢啟发,谷 瑞,孙祥云,李超群,王 强,梁 龙   

  1. 中国矿业大学 化工学院,江苏 徐州 221116
  • 收稿日期:2022-12-19 修回日期:2023-04-13 出版日期:2023-05-20 发布日期:2025-01-03
  • 通讯作者: 梁龙 E-mail:lianglong1218@sina.com

Research Status of difficult-to-float coal slime treatment with cyclone micro bubble flotation column#br#

  • Received:2022-12-19 Revised:2023-04-13 Online:2023-05-20 Published:2025-01-03
  • Contact: Long Liang E-mail:lianglong1218@sina.com

摘要:

旋流微泡浮选柱气泡尺寸小、泡沫二次富集作用强,在微细煤泥浮选时比传统浮选设备具有更好的分选效果。但对于其他难浮煤泥,如固体浓度高、粒度组成宽的浮选入料,尤其是很多配煤入选的选煤厂出现煤质波动时,旋流微泡浮选柱的浮选效果并不理想,这些问题限制了旋流微泡浮选柱的应用。因此,综述了旋流微泡浮选柱结构改进方面的研究进展,分析了不同结构的旋流微泡浮选柱针对三种难浮煤泥(微细煤泥、高浓度煤泥和宽粒级煤泥)的分选效果,并针对不同难浮煤泥提出了结构优化措施,以指导旋流微泡浮选柱有效分选多变的浮选入料。

关键词: 柱浮选, 微细煤泥, 高浓度煤泥, 宽粒级煤泥, 结构改进, 浮选效果

Abstract:

The cyclonic micro bubble flotation column has better separation effect than the traditional flotation equipment in the separation of fine coal slime due to its small bubble size and strong secondary enrichment effect of foam. However, for other coal slimes that are difficult to float, such as flotation feed with high solid concentration and wide particle size composition, especially when coal quality fluctuates in many coal preparation plants, the flotation effect of cyclonic microbubble flotation is not ideal, which limits the application of cyclonic microbubble flotation column. In this paper, the research progress in improving the structure of cyclonic microbubble flotation column is summarized, and the separation effects of cyclonic microbubble flotation with different structures on three kinds of difficult to float slimes (coal slime with ultra-fine particles, with high solid concentration and with wide particle size) are analyzed. The results show that the cyclonic microbubble flotation column can meet the requirements of wide particle size fraction and high concentration flotation, and retain its good separation effect for fine slime through structural improvement.

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