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Sapphire Kaolin
Alternate Names: Saphire Kaolin, Saphhire Kaolin
Description: Secondary Fine Particle Kaolin
| Oxide | Analysis | Formula | Tolerance |
|---|---|---|---|
| CaO | 0.20% | 0.01 | |
| K2O | 0.19% | 0.01 | |
| MgO | 0.15% | 0.01 | |
| Na2O | 0.10% | - | |
| TiO2 | 1.40% | 0.05 | |
| Al2O3 | 38.15% | 1.00 | |
| SiO2 | 46.25% | 2.06 | |
| Fe2O3 | 0.65% | 0.01 | |
| LOI | 13.37% | n/a | |
| Oxide Weight | 232.85 | ||
| Formula Weight | 268.79 | ||
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
===================
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
================
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
------------------
*Extruded, 50% ball clay, 50% flint
**50% Clay, 50% Nepheline Syenite
Related Information
Links
| Materials |
Kaolin
The purest of all clays in nature. Kaolins are used in porcelains and stonewares to impart whiteness, in glazes to supply Al2O3 and to suspend slurries. |
| Typecodes |
Kaolin
Pure clay mineral, there are many brand names of varying purity and iron content. |
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