|Monthly Tech-Tip |
Description: Dorset brown burning ball clay
A highly plastic clay that vitrifies at very low temperatures (much lower than its chemistry suggests). It has an exceptionally small particle size. Fires brown, having almost 2% Fe2O3.
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.
Ball clays are abundant and very plastic and are used in all types of plastic forming bodies. They are not as white-burning or refractory as kaolins but lower in iron and fluxes than bentonites.
|By Tony Hansen|
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