Pulverized Coal Boiler
WEBFigure 2 shows a particlesize distribution from a bowlmill grinder typically used in power plants. A typical utility specifiion for particle size distribution of the coal is that 70% of the mass should pass through a 200mesh screen, which is equivalent to 70% less than 74 μm. Sometimes the top size is limited to about 120 μ m. The ...