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Abstract <p>The parameters of three-phase foam derived from coal flotation waste are studied. Liquid flotation wastes and suspensions with different concentrations of solid wastes are considered. The experimental results indicate that raising the temperature increases the expansion ratio of the foam and decreases its stability. That must be taken into account in localizing the self-ignition hotspots in coal mines. The components used in the flotational enrichment of coal impair foam formation, reducing the expansion ratio and stability of the foam. The foam parameters are investigated as a function of the proportion of solid flotation waste in the foam-forming liquid. To obtain maximum foam volume, a suspension containing 17–25 wt % solid flotation waste is recommended.</p>

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Potential of Foam from Flotation Waste for Preventing Spontaneous Coal Combustion in Mines

  • 期刊论文

  • 发表日期：

    2025年7月1日

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  • V. A. Portola,
  • A. A. Bobrovnikova,
  • E. A. Kirenberg

摘要

Abstract

The parameters of three-phase foam derived from coal flotation waste are studied. Liquid flotation wastes and suspensions with different concentrations of solid wastes are considered. The experimental results indicate that raising the temperature increases the expansion ratio of the foam and decreases its stability. That must be taken into account in localizing the self-ignition hotspots in coal mines. The components used in the flotational enrichment of coal impair foam formation, reducing the expansion ratio and stability of the foam. The foam parameters are investigated as a function of the proportion of solid flotation waste in the foam-forming liquid. To obtain maximum foam volume, a suspension containing 17–25 wt % solid flotation waste is recommended.