AMANDA INRERNATIONAL supplies calcined alumina products with strict impurity control. The purity of Al₂O₃ is ≥ 99.0%, and the content of Na₂O is low (≤ 0.4%). The crystal form is stable, the crystal is well developed, and the Mohs hardness is 9. The raw materials used are industrial hydroxide alumina or industrial alumina. The products are calcined at high temperatures in tunnel kilns or rotary kilns, with low thermal expansion coefficient and excellent thermal shock resistance, meeting various standards such as electronic grade, refractory grade, and ceramic grade.

Main application fields:

1. Ceramic Industry

Electronic ceramics: Integrated circuit substrates (Al₂O₃ ceramic substrates), electronic packaging, insulators, requiring low sodium content and high density;

Structural ceramics: Alumina ceramics (95 porcelain, 99 porcelain), wear-resistant ceramics, biological ceramics, with high mechanical strength.

2. Refractory Materials: Corundum bricks, casting materials, prefabricated parts, key internal linings of steel, cement, and glass kilns.

3. Abrasives and Grinding Tools: Brown corundum, white corundum as alternative raw materials, high-end grinding wheels, cutting discs, grinding media.

4. Polishing Materials: Fine polishing powder (CMP), optical glass, semiconductor wafers, metal surface fine polishing.

5. Fillers and Coatings: High-temperature coatings, functional fillers, to enhance hardness, wear resistance, and corrosion resistance.

6. Catalyst Carriers: Petrochemical catalyst carriers, with controllable specific surface area and pore structure.

7. Electrical Materials: High-voltage insulators, vacuum interrupters, spark plugs, with excellent electrical insulation performance.