What is the purpose of applying water, calcium chloride, or other dust allaying materials before loading fine coal dust?

The purpose of applying water, calcium chloride, or other dust allaying materials before loading fine coal dust is primarily to prevent dust explosions and improve air quality. In underground mining operations, fine coal dust can become airborne and create hazardous conditions. Dust clouds pose a serious risk as they can ignite and lead to explosive situations if there is an ignition source. By applying moisture or dust control agents, the dust particles can be bound together, reducing their dispersion into the air and significantly lowering the likelihood of both dust-related health risks and potential explosions.

Maintaining good air quality is also essential for the health and safety of miners, as excessive dust exposure can lead to respiratory problems. Therefore, the use of these materials is a vital practice in maintaining not only safe working conditions but also regulatory compliance regarding air quality standards in mining environments.