Abstract
ABSTRACTThe particle size analysis of maize, sorghum and millet under wet grinding conditions was studied with a burr grinding mill (the type commonly used in the locality). Some constants regarding particle size and size distribution of the wet ground products such as the distribution modulus, the size modulus, and the geometric mean diameter were determined.The ground material was wet seived in BS410 sieves with the aid of a dispersing agent, Calgon, which improved sieving, especially in the lower sieves.The results of the dried sieve fractions were plotted as cumulative percent by weight versus particle diameter on a log‐probability paper for the study of the particle size and size distribution characteristics. The geometric mean diameter (average particle size) of the ground product was observed to decrease with increase in moisture content, except that for maize which showed an initial rise before decrease. The size modulus, too, decreased with increase in moisture content but maize showord the usual deviation at the sian of soaking in water. The distribution modulus in maize and sorghum was seen to decrease with increase in moisture content but that of millet increased slightly.
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