FT-RA Clay

Description: Westerwald, Germany - Plastic Clay

Oxide	Analysis	Formula
CaO	0.30%	0.03
K2O	2.10%	0.11
MgO	0.40%	0.05
Na2O	0.20%	0.02
TiO2	1.20%	0.07
Al2O3	21.20%	1.00
SiO2	59.70%	4.78
Fe2O3	8.30%	0.25
LOI	6.90%	n/a
C	0.20%	n/a
Oxide Weight		449.38
Formula Weight		483.72

Notes

Raw Color - LIGHT RED - DARK RED
Particle Size (e.s.d.)
125 microns - 0.1
63 microns - 1.5
20 microns - 94
2 microns - 74
.5 microns - 61
Modulus of Rupture at 110C
Mn/M2 - 6.7
lbf/in2 - 970
Water Absorption
1120C - 0.0
1220C - 1.00
Shrinkage Dry to Fired
1120C - 12.0
1220C - 8.5
Plastic Index - 764
PF NO. - 32.2

Related Information

Links

Typecodes	Clay Other Clays that are not kaolins, ball clays or bentonites. For example, stoneware clays are mixtures of all of the above plus quartz, feldspar, mica and other minerals. There are also many clays that have high plasticity like bentonite but are much different mineralogically.

By Tony Hansen
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