Expected Results:

The main outcomes will be the identification of critical properties/factors that should be measured at a mine site and the development of a set of relationships so that nozzle design/positioning, spray properties, etc. can be matched correctly to the dust and on-site conditions for a specific location, so that dust suppression (dust control) efficiency can be maximised.

This will provide the industry with best practice guidelines and allow for a more accurate engineering approach to the design and application of water spraying dust suppression systems in coal mines (with minimal water consumption).

Properties studied including dust particle size distribution, dust concentration, particle composition (via sampling), air velocity, droplet size distribution, droplet concentration, droplet velocity and spray flow rate (water usage) will become part of a database of information that can be used as reference material in future design guidelines.