Comparing the brands of calcium carbonate

Tuesday 18th March 2014

A cone 6 GLFL test for melt flow to compare two calcium carbonates (they make up 27% of this glaze recipe that was designed to maximize their percentage). Notice the amount of bubbles (due to the high loss on ignition of the material). Different brand-names of the material obviously have slightly different chemistries so they exhibit different flow properties during firing.

Pages that reference this post in the Digitalfire Reference Database:

Calcium Carbonate, A Low Cost Tester of Glaze Melt Fluidity, Glaze Bubbles

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