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<p>The rapid advancement of mining technology has exacerbated dust pollution in open-pit mines. Currently, dust suppressants face issues such as short wetting duration, limited functionality, high costs, and secondary pollution. In this study, an innovative road dust suppressant was developed. The formulation included polyacrylamide as the binding agent, calcium chloride to serve as the hygroscopic component, sucrose as the moisture-retaining agent, and alkyl glycoside functioning as the surfactant. The performance evaluation of this suppressant revealed a pH value of 7.82, a viscosity of 17.8 mPa·s, and a surface tension of 26.9 mN/m. The suppressant demonstrated strong resistance to evaporation, effectively maintaining dust humidity. Additionally, it showed excellent resistance to wind erosion, water erosion, corrosion, and pressure. The suppressant minimized dust loss post-application, with compressive strength approximately 3.6 times higher than water. However, its corrosion resistance was slightly inferior to water. In dust removal experiments, the suppressant demonstrated superior performance, achieving total and respirable dust removal efficiencies of 92.03% and 84.38%, compared to water's 44.22% and 41.58%. Analysis of the components' mechanisms confirmed that the suppressant performed well and is highly suitable for road dust suppression.</p>

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Study on the Performance of a New Type of Dust Suppressant for Open-Pit Pyrite Roads

  • 期刊论文

  • 发表日期：

    2025年6月18日

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  • Zhian Huang,
  • Yongrui Yang,
  • Wei Li,
  • Mengyang Zeng,
  • Qianming Liu,
  • Rongxia Yu,
  • Jinyang Li,
  • Ruixiang Wang,
  • Keying Meng,
  • Pengfei Wang

摘要

The rapid advancement of mining technology has exacerbated dust pollution in open-pit mines. Currently, dust suppressants face issues such as short wetting duration, limited functionality, high costs, and secondary pollution. In this study, an innovative road dust suppressant was developed. The formulation included polyacrylamide as the binding agent, calcium chloride to serve as the hygroscopic component, sucrose as the moisture-retaining agent, and alkyl glycoside functioning as the surfactant. The performance evaluation of this suppressant revealed a pH value of 7.82, a viscosity of 17.8 mPa·s, and a surface tension of 26.9 mN/m. The suppressant demonstrated strong resistance to evaporation, effectively maintaining dust humidity. Additionally, it showed excellent resistance to wind erosion, water erosion, corrosion, and pressure. The suppressant minimized dust loss post-application, with compressive strength approximately 3.6 times higher than water. However, its corrosion resistance was slightly inferior to water. In dust removal experiments, the suppressant demonstrated superior performance, achieving total and respirable dust removal efficiencies of 92.03% and 84.38%, compared to water's 44.22% and 41.58%. Analysis of the components' mechanisms confirmed that the suppressant performed well and is highly suitable for road dust suppression.