HW LUMPS Hydrous kaolin (china clay)
A creamy 2-micron water-washed hydrous kaolin in lump form with low viscosity suitable for ceramic bodies. Packaging: 25 kg bags palletised - 22t per FCL, or loose - 25t per FCL.
| REFINING PROCESS: | Water washing, hydrocyclone beneficiation And screening followed by mechanical‑thermal drying |
|
| MINERALOGICAL COMPOSITION: | Kaolinite ‑ trace mica and quartz | |
| PACKAGING: | 25 kg lined HDPE bags 1.25 t bulk bags |
|
| PHYSICAL PROPERTIES: | TYPICAL | |
|---|---|---|
| Abrasiveness (Einlehner tester) | 33 g/m2 | |
| Particle size distribution | <10 micron | 83% |
| < 2 micron | 60% | |
| Mean particle size (D50) | 1.5 micron | |
| Residue (> 45 micron) | 2.1% | |
| Reflectance (Elrepho R457) | 79% (off-white in colour) | |
| Fired Reflectance (Elrepho R457) | 81% | |
| Green shrinkage (%) | 2.41 | |
| Fired shrinkage (%) | 12.2 | |
| pH Value | 7 - 8 | |
| Specific gravity of kaolin mineral | 2,60 | |
| Mohs hardness | 2,0 – 2,5 | |
| Moisture content | 3 % | |
| Oil absorption (linseed oil) | 45 ml/100g | |
| CHEMICAL ANALYSIS: | TYPICAL | |
| SiO2 | 46,12% | |
| Al2O3 | 37,86% | |
| Fe2O3 | 0,28% | |
| TiO2 | 0,55% | |
| CaO | 0,16% | |
| MgO | 0,18% | |
| Na2O + K2O | 0,58% | |
| L.O.I. | 13,74% | |
| Signed: V. Jain, Manager, 21 September 2006 | ||