Sub Sieve Analysis Techniques with well labelled diagrams

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IX - SUB-SIEVE SIZING. These are methods used to grade the particles too small to be easily sized by finest lab screens,below 40 µm. The shape and specific gravity of the particles are the main fac... tors affecting the grading of the particles. These methods include  Sedimentation  elutriation,  cyclocyzer  Microscopic sizing  Electrical resistance method.  Laser beam particle analysis.  On-line particle analysis There are many concepts in use for designating particle size within the sub-sieve range, and it is important to be aware of them, particularly when combining size distributions determined by different methods. It is preferable to cover the range of a single distribution with a single method, but this is not always possible. Approximate conversion factors, which should be used with caution, are given below: Multiplying factor Sieve size to Stokes’ diameter (sedimentation, elutriation) 0.94 Sieve size to projected diameter (microscopic) [Show More]

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