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<p>Unlike the conventional mechanical flotation cells, the flotation column and Jameson flotation cell effectively enrich coal across a broader particle size range. This study provides a novel investigation of negative bias conditions, a previously unexplored aspect in flotation systems, by comparing the performances of the flotation column and Jameson cell in the absence of a froth zone for coarse particle flotation. Experiments were conducted on raw coal with high ash content, using three particle size ranges: -500 + 300&#xa0;μm, -300 + 212&#xa0;μm, and -212 + 106&#xa0;μm. A two-level three factorial design was employed to assess the effects of particle size, collector dosage, and bias rate on flotation performance. The impact of these parameters on combustible recovery and ash content was quantified through empirical modeling. Results indicated that the optimal particle size for both systems was -212 + 106&#xa0;μm, with the Jameson cell demonstrating superior kinetics compared to the flotation column. Notably, the Jameson cell achieved up to a 40% reduction in ash content relative to the flotation column, with maximum combustible recovery (19.18%) observed under finer particle size, higher bias ratio, and increased collector dosage. This work highlights the critical importance of detailed, parameter-specific comparisons of advanced flotation technologies, especially under negative bias conditions, providing valuable insights into their industrial applications.</p>

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Comparison of Flotation Column and Jameson Cell Performance for High Ash Coal Flotation

  • 期刊论文

  • 发表日期：

    2025年4月22日

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  • Sevgi Karaca,
  • Ali Uçar,
  • Oktay Şahbaz

摘要

Unlike the conventional mechanical flotation cells, the flotation column and Jameson flotation cell effectively enrich coal across a broader particle size range. This study provides a novel investigation of negative bias conditions, a previously unexplored aspect in flotation systems, by comparing the performances of the flotation column and Jameson cell in the absence of a froth zone for coarse particle flotation. Experiments were conducted on raw coal with high ash content, using three particle size ranges: -500 + 300 μm, -300 + 212 μm, and -212 + 106 μm. A two-level three factorial design was employed to assess the effects of particle size, collector dosage, and bias rate on flotation performance. The impact of these parameters on combustible recovery and ash content was quantified through empirical modeling. Results indicated that the optimal particle size for both systems was -212 + 106 μm, with the Jameson cell demonstrating superior kinetics compared to the flotation column. Notably, the Jameson cell achieved up to a 40% reduction in ash content relative to the flotation column, with maximum combustible recovery (19.18%) observed under finer particle size, higher bias ratio, and increased collector dosage. This work highlights the critical importance of detailed, parameter-specific comparisons of advanced flotation technologies, especially under negative bias conditions, providing valuable insights into their industrial applications.