Pyrofrac 4205

Oxide	Analysis	Formula
K2O	0.20%	0.02
Na2O	0.20%	0.03
TiO2	0.40%	0.04
Al2O3	12.00%	1.00
SiO2	82.80%	11.71
Fe2O3	1.00%	0.05
SO4	3.00%	n/a
H2O	3.40%	n/a
Oxide Weight		821.10
Formula Weight		877.24

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)	105
Pyrometric Cone Equivalent	23
Sieve Analysis Dry	+20 mesh: 5.0 +50 mesh: 90.0 +70 mesh: 5.0
Density (Specific Gravity)	2.6

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