Investigating the efficacy of foam-based dust particle capture for dust elimination in ore pass unloading: A similar experimental study

Dust pollution arising from ore unloading poses significant concerns for occupational health. The foam-based dust particle capture presents a promising solution for dust suppression due to enhanced wettability, broader dust capture area, and stronger adhesion. This study designed a similar experiment platform to investigate how unloading conditions and foam parameters influence airflow dynamics and dust migration. The results indicate that airflow intensity and dust source are pivotal factors affecting dust concentration. Additionally, applying foam at the unloading port on the first level or the ore bin proves effective. Foam-dust interaction duration and airflow intensity are crucial determinants of dust suppression efficacy. Furthermore, the study reveals that the foam has a dual effect on dust control: while it efficiently captures dust particles to mitigate pollution, it can also disrupt airflow unfavorably. This research offers valuable insights into optimizing the spatial arrangement and quantitative application parameters of foam equipment. [Display omitted] •A similarity experimental platform is designed based on similarity theory.•Foam-based dust capture during ore unloading is investigated quantitatively.•Foam exerts a dual influence: dust particle capture and interfering effects on airflow.•Extended foam-dust contact duration and reduced airflow intensity contribute to more effective dust mitigation.