Ceramitalc HDT

Oxide	Analysis	Formula
CaO	8.71%	0.17
MgO	29.60%	0.82
Na2O	0.34%	0.01
Al2O3	0.36%	-
SiO2	55.86%	1.04
Fe2O3	0.17%	-
MnO	0.12%	-
LOI	4.84%	n/a
Oxide Weight		106.30
Formula Weight		111.70

Notes

No longer available.

A pressing grade of talc used in ceramic wall tile and artware. It develops high thermal expansion and low moisture expansion to prevent crazing in bodies that can be safety fired at rapid cycles.

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Materials	Talc A source of MgO for ceramic glazes, a flux or thermal expansion additive in clay bodies, also used in the manufacture of cordierite.
Materials	Ceramitalc
Typecodes	Flux Source Materials that source Na2O, K2O, Li2O, CaO, MgO and other fluxes but are not feldspars or frits. Remember that materials can be flux sources but also perform many other roles. For example, talc is a flux in high temperature glazes, but a matting agent in low temperatures ones. It can also be a flux, a filler and an expansion increaser in bodies.

By Tony Hansen
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