Particle size distribution of resuspendable components of samples taken at brown coal open pit mine in resuspension chamber
2011
Abstract
A cylindrical chamber for resuspension of solid particles was constructed for measuring particle size distribution, counting formed aerosol particles, and withdrawing particle fractions segregated by size. Samples of brown coal, fly-ash, flue gas desulfurization gypsum, and overburden material taken at north-western open pit Nastup were investigated.
The samples were pneumatically dispersed in the chamber at defined temperature and humidity conditions (20 oC and relative humidity 50 %). Average particle size distributions were determined.
According to measurements, fly-ash and coal powder originating from mine roads showed highest concentration by weight after dispersion in the resuspension chamber.