A review of water-based suppressants for coal dust suppression
Fangwei Han, Mei Liu, Fuhong Hu, Guirui Niu, Diandian Xue, Yue Zhao, Shengyong Hu, Hetang Wang
Abstract
Abstract The large amount of harmful particles in coal dust not only pollutes the production environment, affects the production efficiency and resource utilization of enterprises, but also poses a risk to human health. Effectively controlling coal dust is of great significance to clean production. Water-based dust suppressants are extensively employed to mitigate coal dust. This paper provides a comprehensive review of the water-based dust suppression materials for coal dust control. According to the difference of mechanism, the dust suppressants are divided into wetting type, hygroscopic coalescence type, cohesive agglomeration type, and composite type. The evaluation methods for dust suppressants key properties such as wettability, permeability, moisture absorption and water retention, and consolidation are summarized. The review results show that coal dust suppressants are no longer limited to a single dust suppression function. For example, it is necessary to develop multi-functional coal suppressants to meet the needs for synergistic suppression both coal dust and coal spontaneous combustion. Driven by the concept of green, low-carbon and sustainable development, attention should be paid to the development of bio-based environmentally friendly coal dust suppressants. In addition, the evaluation method system for the key performance of water-based dust suppressants should also be improved, and further research is necessary.