Zpravodaj Hnědé uhlí 2011, 51(4)
Using vertical fallout chamber to determine dust fallout
- Výzkumný ústav pro hnědé uhlí a.s., Most
In the framework of aerosol particles monitoring from fugitive sources, a pilot measuring device has been set up and tested to determine dust fallout. The pilot aimed at determining the potential of different materials to emit dust particles concerning a free fall of material flow. Various dusty materials typical of open pit brown coal mining were tested - overburden material, coal dust, and sand from an unloading dump. Ten partial tests were conducted for each kind of material. Dusting of material was expressed as a ratio of emitted dust weight to total weight of the sample. As the partial tests showed a great variability, it can be concluded that dusting of particular materials has to be determined in a series of several partial test. Dusting of sample with particle aerodynamic diameter bellow 50 μm was 1 to 2 percent by weight. Dusting of PM10 was in the extent of 0.01 to 0.1 percent by weight. Thus, the determined emission potential of tested materials was relatively low which can be explained by adhesion power of particles.
Keywords: open pit mine, air pollution, dust, dusting, fugitive emissions, PM10
Published: December 1, 2011 Show citation