Hymod AT Ball Clay

Description: Dorset brown burning ball clay

Oxide	Analysis	Formula
CaO	0.30%	0.02
K2O	3.10%	0.12
MgO	0.40%	0.03
Na2O	0.50%	0.03
TiO2	1.20%	0.05
Al2O3	29.00%	1.00
SiO2	54.00%	3.16
Fe2O3	2.30%	0.05
LOI	8.50%	n/a
Oxide Weight		319.37
Formula Weight		349.03

Notes

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.

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Materials	Ball Clay 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.
Typecodes	Ball Clay 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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