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Sapphire Kaolin
Secondary Fine Particle Kaolin
Chemistry
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Links to Other Materials
Miscellaneous
- Family: Kaolin
- Region: None
- Mined At: Unspecified
- Raw Mineral: No
- Generic: No
Notes
This is a secondary kaolin with a fine particle size distribution. It has no additives. It imparts high green strength while maintaining the best possible fired color. Sapphire is used in the dinnerware, artware and tile industries.
Physical Properties
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Dry M.O.R., psi:* 400
pH: 4.8
C.E.C., meq/100g: 6.5 +/- 1.0
Specific Surface Area, sq metre/g: 16.5
Specific Gravity: 2.6
P.C.E.: 33-34
Particle Size, Microns: 20 10 5 2 1 0.5 325# residue
(% finer than) 99% 97% 93% 81% 72% 56% .5
Fired Properties
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Color, Cone 8 (L) 83.0
(a) -0.8
(b) 8.6
Shrinkage Cone 10, 100% clay 9.2
Absorption Cone 10, 100% clay 7.8
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*Extruded, 50% ball clay, 50% flint
**50% Clay, 50% Nepheline Syenite
Suppliers
- K&T Clays
Authors
- Tony Hansen (Owner)
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