|Monthly Tech-Tip |
These are the oversize particles (from the 79, 100, 140 and 200 mesh sieves) from 100 grams of a commercial Gleason ball clay. They have been fired to cone 8 oxidation. There is 1.5 grams total, this is within the limits stated on their data sheet even though the material is sold as 200 mesh grade. Firing the samples shows whether the particles contain iron that will produce specking in porcelains and whiteware. In this case there are a few. We do this test on many materials and this is typical of what we see.
Particle Size Distribution
Knowing the distribution of particle sizes in a ceramic material is often very important in assessing its function and suitability for an application.
A fine particled highly plastic secondary clay used mainly to impart plasticity to clay and porcelain bodies and to suspend glaze, slips and engobe slurries.
Sieve Analysis 35-325 Wet
SIEV particle size distribution test to evaluate and compare the particle size profiles of ceramic material powders