Calcined Kaolin Optimal-08 (CAS 1332‑58‑7) is a premium mineral raw material with whiteness ≥ 83 % and a particle size distribution D50 8‑15 µm, produced under strict technological standards. The calcination step converts the raw kaolin into a more crystalline alumina‑silicate phase, which increases its reactivity in alkaline media and improves wetting of polymer matrices. With Al₂O₃ ≥ 35 % and SiO₂ ≤ 55 %, the material exhibits excellent resistance to acids, bases and organic solvents, while maintaining thermal stability up to 1450 °C. These properties make it a preferred component in refractory mixes for furnaces, high‑temperature ceramic tiles and insulating bricks, where it functions as both binder and plasticizer, boosting flexural strength, impact resistance and wear performance. In the ceramics sector it is used in porcelain bodies and glaze formulations; the fine fraction creates a smooth, glossy surface, whereas the coarser fraction contributes to body density and thermal shock resistance. In specialty coatings, calcined kaolin enhances substrate adhesion, reduces porosity and provides a barrier against corrosion, which is valuable for metal and glass coating systems. In rubber compounds it acts as a filler that delivers uniform dispersion, raises the modulus, and lowers thermal expansion—critical for automotive hoses, seals and vibration‑damping components. Additional common applications include paper manufacturing as an optical filler to increase brightness and smoothness, and plastics or composite materials where it improves mechanical properties and reduces cost. The coarse‑dispersed nature yields a high bulk density, simplifying logistics and storage. Recommended storage conditions are a dry, well‑ventilated environment at +5 °C to +30 °C, avoiding moisture and aggressive acids. Custom packaging is available in 25 kg bags or 1‑ton containers. Packaging is made from multi‑layer polypropylene to protect against humidity and mechanical damage. Shipments include electronic copies of all certificates and real‑time cargo tracking. Global Optimals’ technical team offers formulation optimisation advice and assistance in selecting complementary additives.
| Белизна | ≥ 83% |
| D50 | 8–15 мкм |
| Al₂O₃ | ≥ 35% |
| SiO₂ | ≤ 55% |
| Рабочая t° | до 1450°C |
25 kg bags / 500 kg big bags
Calcined Kaolin Optimal-08 should be stored in a dry, well‑ventilated area at ambient temperatures, typically between +5 °C and +30 °C, protected from direct sunlight and moisture condensation. The multi‑layer polymer bags must remain intact; any tears or leaks require repackaging into new sealed containers. When stored under these conditions the product retains its properties indefinitely, though it is advisable to use it within 12 months of receipt. Handling precautions include wearing gloves, safety goggles and a dust mask, and avoiding generation of airborne dust.
