Albion Sperse
Description: Kaolin
| Oxide | Analysis | Formula | Tolerance |
|---|---|---|---|
| CaO | 0.24% | 0.01 | |
| K2O | 0.60% | 0.02 | |
| MgO | 0.24% | 0.02 | |
| Na2O | 0.56% | 0.03 | |
| TiO2 | 0.71% | 0.03 | |
| Al2O3 | 35.52% | 1.00 | |
| SiO2 | 45.65% | 2.18 | |
| Fe2O3 | 1.25% | 0.02 | |
| LOI | 15.22% | n/a | |
| Oxide Weight | 243.43 | ||
| Formula Weight | 287.13 | ||
Notes
Albion Sperse is a coarse-grained, air-floated Georgia kaolin which is highly adaptable to slip-casting and filter press operations. It is unique for its high level of pure kaolinite and coarse particle distribution curve. It features excellent dispersion characteristics, low shrinkage, and a clean white fired color.
Albion Sperse is especially suitable for the manufacture of sanitary ware, oxide color pigments, high tension electric porcelain, and art pottery.
Fired Properties
================
PCE: 34
Fusion Point: 3200F
Cone 5 8 10 12
------------------------------------------------------
Linear Shrinkage (dry basis %): 6.4 8.2 9.3 10.4
*Modulus of Rupture, (psi): 80 30 100 55
Water Absorption, (%): 24.7 20.3 17.9 15.6
Porosity (%): 40.0 35.5 32.8 29.5
Bulk Density (gm/cc): 1.61 1.78 1.83 1.91
Brightness (% reflectance): 90.2 87.0 85.4 82.0
Whiteness (% reflectance): 4.1 6.2 7.4 9.0
Apparent Specific
Gravity (gm/cc): 2.7 2.7 2.73 2.72
*50% clay:50% kaolin
Unfired Properties
==================
Specific Gravity (gm/cc): 2.6
Water of Plasticity (%): 29.1
Modulus of Rupture (psi): 20
Brightness: 78
Whiteness: 26.9
pH (28% solids): 5.1
Particle Size Distribtion:
Minus 20 microns: 97.2
-10: 90.3
-5: 72.9
-2: 48.3
-1: 30.8
-0.5: 17.0
-0.2: 9.5
Mean Particle Size (microns): 2
C.E.C. (meq/100 gm): 20.7
Minimum Dispersed Viscosity, cps:
30% solids Brookfield, No. 2 Spindle, 100 RPM: 16
Relative Settling Rate (in/min Baroid Filter Press): 0.035
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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