Pyrax HS

Alternate Names: Pyrax HS#5

Description: Pyrophyllite

Oxide	Analysis	Formula
K2O	2.30%	0.18
Na2O	0.40%	0.05
TiO2	0.10%	0.01
Al2O3	13.80%	1.00
SiO2	80.90%	9.95
Fe2O3	0.20%	0.01
LOI	2.30%	n/a
Oxide Weight		722.13
Formula Weight		739.13

Notes

Described by the manufacturer as a high sericite pyrophyllite for sanitaryware which aids in early mullite formation offering increased fired strength, faster firing cycles, and increased thermal shock resistance.

Pyrax MP, another grade, is used in rapid fire ceramic wall tile bodies. It lowers firing temperature, produces low moisture expansion bodies with good craze resistance, increases thermal shock resistance, and greatly increases firing strength in vitreous bodies.

Related Information

Links

Materials	Pyrophyllite
Materials	Pyrax Pyrophyllite
Materials	Pyrax RG
Typecodes	Aluminum Silicate Materials not classifiable as commonly known aluminum silicates. For example, kaolin is a common aluminum silicate.
URLs	https://www.vanderbiltminerals.com/resources/Minerals_and_Chemical_for_Ceramics_and_Refractories_web.pdf Vanderbilt Minerals for Ceramics Technical Sheet Includes Vansil, Pyrax, Peerless, Dixie, Veegum, Vanzan, Darvan.

By Tony Hansen
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