ELECTROCORUNDUM NOBLE
Noble electrocorundum, also known as white electrocorundum, is an abrasive raw material obtained synthetically during the melting of aluminum oxide. Noble electrocorundum is an artificial abrasive material characterized by the highest chemical purity among materials based on aluminum oxide Al2O3. Compared to ordinary electrocorundum, it is more uniform in terms of chemical composition, structure and properties.
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