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Is a non consolidated or slightly consolidated, strongly clayish, sandy gravel material of grayish-white to light beige colour. Kaolin is used as an additive ceramic raw material for building ceramic production (ceramic floor-tiles, wall-tiles or sanitary ware).
Deliveries
The raw kaolin is mined in a quarry near to the village Rudnik. The quarry has been working since 1996. After mining, material is transported to the stockpile near to the quarry. Kaolin is delivered in bulk, loading on the trucks directly on the stockpile near to the quarry.
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CHARACTERISTICS of the Raw Kaolin (raw material milled under 0,2 mm) |
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Total shrinkage after firing at 1250°C |
11,9 (9,4-14,4)% |
| Absorption Capacity by weight after firing at 1250°C | 5,1 (1,5-8,7) % weight |
| Colour after firing at 1250°C | light grey |
| GRANULOMETRY | |
| Grains size in mm | Average weight % |
| over 8,0 mm | 4 |
| from 2,0 to 8,0 mm | 11 |
| from 0,063 to 2,0 mm | 33 |
| under 0,063 mm | 52 |
| MINERALOGICAL COMPOSITION | |
| Quartz | 48,5 weight % |
| Fireclay-typ kaolinit | 22,6 weight % |
| Clayish mica sericite-illite | 20,7 weight % |
| Potasdh feldspar | 5,8 weight % |
| Albite | 1,0 weight % |
| Free Ti and Fe oxides | 1,0 weight % |
| Other trace minerals. | 0,4 weight % |
| CHEMICAL ANALYSIS | |
| Zložky v % hmotn. | priemer |
| Strata žihaním | 4,45 |
| SiO2 | 73,6 |
| TiO2 | 0,55 |
| Al2O3 | 16,4 |
| Fe2O3 | 1,05 |
| CaO | 0,05 |
| MgO | 0,45 |
| MnO | 0,05 |
| K2O | 3,1 |
| Na2O | 0,25 |
| B2O3 | 0,05 |
