Rosin-Rammler-Sperling-Bennett Particle Size Distribution

3 Rosin-Rammler-Sperling-Bennett Particle Size Distribution 

The Rosin-Rammler-Sperling-Bennett (RRSB) particle size distribution is widely used for coal characterization. The basic formulation is 

In Equation (3.71), Q3 represents the mass summation curve ranging from 0 to 1, d is the particle diameter. The parameters of the distribution function are characteristic particle size d, which can be simply read off from the summation curve at a value of 0.632, and the parameter of homogeneity n, which requires linearization. 

The summed weight firactions of a sieve analysis Q3 and the corresponding class mean diameters di can be used to calculate right and left expressions of Equation (3.73) while n remains to be determined as slope of a linear regression. 

The homogeneity parameter ranges between 0.4 and 3.5 and is inversely linked to the specific surface of the particles [116]. 

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