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Description: Pyrophyllite

Oxide Analysis Formula
K2O 0.20% 0.01
Na2O 0.20% 0.01
TiO2 0.40% 0.02
Al2O3 22.30% 1.00
SiO2 73.30% 5.58
Fe2O3 0.70% 0.02
LOI 2.80%n/a
Oxide Weight 444.13
Formula Weight 456.93


The PYROPHYL group of mineral products consists of milled co-products of the Andafrac series and various milled combinations of the Pyrofrac and Andafrac series. The broad range of alumina contents allows for both whiteware and refractory applications.

Pyrophyl is a high melting material and is used to reduce hot load deformation and improve volume stability in refractories. It is used in foundry mold and core wash formulations, technical ceramics, structural clay coatings, art pottery.

This material is dry milled and magnetically separated.

The analysis shown here is an average.

Related Information


Materials Alkatrol
Materials Andafrac
Materials Pyrofrac
Materials Pyrotrol
Materials Pyrophyllite
Materials Seriphyl
Materials Pyrophyl R-1403
Materials Pyrophyl R-1404
Materials Pyrophyl R-2252
Materials Pyrophyl R-2253
Materials Pyrax Pyrophyllite
Typecodes Aluminum Silicate
Materials not classifiable as commonly known aluminum silicates. For example, kaolin is a common aluminum silicate.


Bulk Density lbs/cu. ft. (Packed) 55-70
Pyrometric Cone Equivalent 26-29
Sieve Analysis Dry +200 mesh: 1-12%
Density (Specific Gravity) 2.7-2.75
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