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Glaze

ARZ® alumina Series

ARZ® is a calcined alumina that takes advantage of alumina’s high refractive index and light scattering properties making it ideal as a zircon replacing opacifier in ceramic bodies, glazes and engobes.
AFRZ® is a ground alumina that offers whitening capabilities as well as taking advantage of alumina’s high refractive index and light scattering properties. It can be used to replace zircon as an opacifier and a whitening agent.

Hard calcined alumina

These aluminas have low specific surface area (BET < 1m²/g) and are almost entirely alpha alumina. Standard soda content is 3000-4000 ppm and intermediate soda content is 2000-3000 ppm.  Hard calcined aluminas are produced in rotary kilns. 

 

Calcined alumina

Aluminas with intermediate to relatively high specific surface areas (BET 3- 75m²/g) with alpha alumina contents varying between 20% and 95%.These are produced by controlled rotary calcination of aluminium trihydroxide.