Mining Contract: Development of an Anti-Caking Rock Dust
The main focus of this contract is to develop an economically-viable limestone-based rock dust capable of meeting the specifications detailed in 30 CFR 75.2. Prior work has shown that the use of hydrophobic agents used with conventional limestone-based rock dusts lessens their ability to cake when exposed to moisture and enables their dispersion back into the environment. The focus of the rock dust optimization work will center upon optimizing the particle size of the rock dust in conjunction with varying the levels of hydrophobic agent and evaluating these rock dusts in a dust dispersion chamber similar to the chamber developed by NIOSH. The enabling technology associated with varying the particle size and hydrophobic treatment of limestone-based rock dust is well known. The minerals industry is skilled in the art of grinding, screening, blending, and the use of surface chemistry to modify parameters and performance in end applications. However, there are several barriers to implementation.
Contract Status & Impact
Further contract details pending.