A root-of-two series of test sieves

Thursday 19th February 2009

The coarsest screen is at the top, the finest on the bottom. The top one has an opening of 425 microns (thus 425 micron and finer particles will pass through it, +425 micron particles will not). Its opening area is 180,000 square microns (425x425). Going downward, the openings have areas half that of the one above (thus, for the second, the opening area is 300x300=90,000 microns). Structural products industries, like brick, measure coarser particles than this, using 10-70 mesh. Using this series one can produce a standard measurement of the distribution of particle sizes in a material powder. The finer sieves (from 100-325) are only practical for wet processing (where the powder is water washed through the stack). In Insight-live the SIEV test (water washed) uses this series of sieves.

Pages that reference this post in the Digitalfire Reference Library:

SVWT Sieve Analysis Wet, SIEV Sieve Analysis 35-325 Wet, L20M % < 20 microns, L10M % < 10 microns, Particle Size Distribution of Ceramic Powders, Step 7: Making test bars and using it on the potter's wheel, Particle Size Distribution, Sieve, 325 mesh

This post is one of thousands found in the Digitalfire Reference Database. Most are part of a timeline maintained by Tony Hansen. You can search that timeline on the home page of digitalfire.com.