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Clay 220

Alternate Names: Kil 220

Oxide Analysis Formula
CaO 0.10% 0.01
K2O 2.00% 0.10
MgO 0.60% 0.07
Na2O 0.10% 0.01
Fe2O3 1.80% 0.05
Al2O3 21.30% 1.00
SiO2 66.80% 5.32
TiO2 6.70% 0.40
SO40.20%
C0.09%
LOI6.70%
Organics0.16%
Oxide Weight 476.00
Formula Weight 512.65

Related Information

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Minerals Kaolinite
Minerals Quartz
Minerals Organics
Minerals K-Feldspar
Minerals Na-Feldspar
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.
Hazards Quartz Toxicity
Materials Clay 220
Materials Clay 244
Materials Clay 233
Materials Clay 232
Materials Clay 222
Materials Clay 216
Materials Clay 261
Materials Clay 246
Materials Clay 215

Data

Dry Strength (kgf/cm2)32.0
Firing Shrinkage1100C: 3% 1150C: 6% 1200C: 9% 1250C: 10%
Sieve Analysis Dry< 212 micron: 99.0% < 150 micron: 98.1% < 106 micron: 96.7% < 63 micron: 92.5% < 45 micron: 89.
Water absorption1050C: 17% 1100C: 15% 1150C: 11% 1200C: 7% 1250C: 3%

By Tony Hansen


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