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PARTICLE SIZE ANALYSIS

PARTICLE size ANALYSIS1 CHARACTERIZATION OF SOLID particles size SHAPE DENSITY2 SPHERICITY, Equivalent diameter, Nominal diameter = Let = , = , = = = 6 3 Surface area of the sphere of diameter Dp, = 2=6 = =6 It is often difficult to calculate volume of PARTICLE , to calculate equivalent diameter, Dpis taken as nominal diameterbased on screen ANALYSIS or microscopic analysis3 Sphericityof particles having different , length = to , Table , McCabe Smith Sphericityof sphere, cube, short cylinders(L=Dp) = 15 VOLUME SHAPE FACTOR 3 = 3 Where , a = volume shape factorFor sphere, = 6 3or = 66 Commonly used measurements of PARTICLE size7 PARTICLE size / units Equivalent diameter : Diameter of a sphere of equal volume Nominal size : Based on; Screen ANALYSIS and Microscopic ANALYSIS For Non equidimensionalparticles Diameter is taken as second longest major dimension.

•Particle size range from fine powder to 6.5mm, Bulk density from 16 to 3200kg/m3 •Pressure System –1-5 atm gauge –Free flowing material for any …

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