KAOLIN INFORMATION
Kaolin, also known as china clay, has a great number of uses. These include: ceramics, filler, pharmaceutical, absorbent, and many others.
Grades of KAOLIN
KAOLIN CALCINED CLAY INFORMATION
This is a white clay which has been subjected to very high temperatures. This thermal treatment is strong enough to rearrange the crystal structure, creating a new product not seen in nature.
| CHEMICAL SPECIFICATIONS: | |
|---|---|
| SiO2 | 57. % |
| Al2O3 | 40. % |
| K2O | 1.2 % |
| Fe2O2 | 0.93% |
| TiO2 | 0.54% |
| PHYSICAL SPECIFICATIONS: | |
|---|---|
| L.O.I | 0.23% |
| Color | White |
| Brightness | 90-93 GE TAPPI T-6460575 |
| Oil Absorption | 69-79 ASTM |
| Oil Absorption | 71-81 Gardener Coleman |
| Moisture | 0.4% max |
| pH | 5.3-6.3 |
| Refractive Index | 1.62 |
| Bulk Density | 18.8 lbs/cu. ft loose |
| Bulk Density | 29.4 lbs/cu. ft packed |
| Top Particle Size | 25 micron |
| Average Particle Size | 2 micron |
| 10% Finer Than | 0.5 micron |
KAOLIN ELECTROS INFORMATION
An exceptionally fine, bulky kaolin, passing pharmaceutical specifications. This reversible colloid can be used internally; is free from mica, feldspar, iron, and alkali; and is recommended for use in the pharmaceutical and cosmetic industries.
| CHEMICAL ANALYSIS: | |
|---|---|
| SiO2 | 47.7% |
| Al2O3 | 37.6% |
| K2O | 0.99% |
| Fe2O3 | 0.57% |
| MgO | 0.16% |
| Na2O | 0.15% |
| Pb | 10 ppm |
| As | 2 ppm |
| Acid solubles | < 1% |
| LOI | 12.8% |
| PHYSICAL ANALYSIS: | |
|---|---|
| Specific gravity | 2.6 |
| Apparent density | 0.57 g / cc |
| Bulk | 25 lbs. ft3 |
| Whiteness | 89 |
| Size | |
| Through 325 mesh | 99.5% |
| Over 10 microns | 0.5% |
| Under 2 microns | 75.0% |
| pH | 7.5 |
| Oil absorption | 45 |
KAOLIN LION INFORMATION
A washed, white, soft Kaolin with very low levels of trace elements including low heavy metals.
| CHEMICAL ANALYSIS: | |
|---|---|
| Silica (SiO2) | 47.0% |
| Alumina (Al2O3) | 37.0% |
| Loss on Ignition | 12.1% |
| Ph | 5.0 |
| PHYSICAL ANALYSIS: | |
|---|---|
| Brightness | 82.5 |
| Yellowness | 5.2 |
| Particle Size Distribution: | |
| Over 50 Microns | 0.05% max |
| Over 10 Microns | 15% max |
| Under 2 Microns | 45% max |
| Oil Absorption | 38g / 100cc |
| Specific Gravity | 2.6 |
KAOLIN PLUS WHITE INFORMATION
This is a white, natural, hydrated Kaolin. It provides good hiding and other
valuable properties to many other industries at a reasonable cost.
| CHEMICAL ANALYSIS: | |
|---|---|
| SiO2 | 44.5% |
| Al2O3 | 39.5% |
| TiO2 | 1.5% |
| Fe2O2 | 1.0% |
| CaO | 0.25% |
| Moisture | 0 to 2% |
| LOI | 14.0% |
| PHYSICAL ANALYSIS: | |
|---|---|
| Brightness | 82 to 84% |
| Specific Gravity | 2.58% |
| pH | 6.0% |
| Refractive Index | 1.57% |
| Thru 325 Mesh | 99.5% |
| Thru 2 Micron | 83.0% |
| Average Particle | 0.8 Micron |
| Loose Density | 25. lb/cu. ft |
| Packed Density | 45. lb/cu. ft |
KAOLIN SLURRY INFORMATION
An aluminum silicate composed of Eastern Kaolin and sold as a 70% solids slurry in rail tanks or truck tanks.
| CHEMICAL ANALYSIS: | |
|---|---|
| SiO2 | 45.5 % |
| Al2O3 | 38.5 % |
| Fe2O2 | 0.27 % |
| MgO | 0.02 % |
| CaO | 0.02 % |
| Na2O | 0.03 % |
| K2O | 0.13 % |
| TiO2 | 1.74 % |
| LOI | 13.5 % |
| SO4 trace | 100 ppm max |
| PHYSICAL ANALYSIS: | |
|---|---|
| Appearance | white or milky liquid |
| Residue | 2.0% max 325 mesh wet screen |
| Brightness | 72 -78 GE |
| L* | 93.87 |
| a* | 0.94 |
| b* | 8.67 |
| D90 | 12. micron |
| D50 | 1.8 micron |
| D20 | 0.5 micron |
