Noble electrocorundum is an ecologically clean and very hard raw material resistant to aggressive chemical agents. Noble electrocorundum does not contain crystalline, chemically unbound silica (SiO2).

Strict quality control of raw materials and melting parameters ensures the production of high-purity and high-whiteness noble electrocorundum. Noble electrocorundum is free of iron and dispersed in a narrow particle size distribution. The grain size of white alumina complies with the FEPA (Federation of European Producers of Abrasives) standards.

The grains of noble electrocorundum are more porous than ordinary electrocorundum.

Application:

• for surface treatment of acid-resistant steel, non-ferrous metals and aluminum

• for matting and decorating glass

• in the production of abrasive tools

• in the production of high-alumina refractory materials

• in the production of fine and electrical ceramics

• in precision casting

• for prosthetic work (e.g. sandblasting)

Product benefits

• exceptional hardness

• versatile use

• suitability for repeated use

• dry and wet abrasive blasting

• high melting point

Physico-chemical properties:

• Al2O3 content: over 99%

• Admixtures: Na2O, K20, CaO, SiO2 and Fe2O

• Specific gravity: 3.95 +/- 0.5 g/cm3

• Bulk density: 1.52-1.85 g/cm3

• Hardness: over 9 on the Mohs scale

• Grain shape: sharp-edged