Pyrofrac 1655

Oxide	Analysis	Formula
K2O	0.45%	0.04
Na2O	0.45%	0.05
TiO2	0.40%	0.04
Al2O3	13.50%	1.00
SiO2	79.00%	9.93
Fe2O3	1.00%	0.05
Cl	5.20%	n/a
Oxide Weight		716.27
Formula Weight		755.56

Notes

Used in structural clay coatings, refractory formulations, whiteware ceramics, art pottery to
increase refractoriness, reduce shrinkage, and widen firing range.
This material is made by crushing & screening of selectively mined andalusite/pyrophyllite/sericite ores
with heavy media separation.

Related Information

Links

Materials	Andalusite
Materials	Pyrophyllite
Materials	Alkatrol
Materials	Pyrofrac
Materials	Seriphyl

Data

Bulk Density lbs/cu. ft. (Packed)	65
Pyrometric Cone Equivalent	20
Sieve Analysis Dry	+50 mesh: 0.1 +70 mesh: 0.1 +100 mesh: 1.1 +200 mesh: 8.6 +325 mesh: 21.0
Density (Specific Gravity)	2.6

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