CALCINED ALUMINA - Refractory, Ceramics

CALCINED ALUMINA
Calcined alumina for refractories, ceramics and surface treatment.
Combined with state of the art process control equipment we are able to produce a range of high alpha alumina grades with controlled soda chemistry, surface area and partied size distributions.
We provide alumina products are used in a wide grange of refractory applications, such as: fired shapes, monolithics and pre-case shapes used in foundry, iron and steel making applications.
Ceramic grades are used in the manufacture of grinding media, glazes, technical and advanced ceramics.
Alpha alumina is also used in surface treatment applications, careful control of physical properties allow its as a metal polish and buffer in addition to surface that require a specific finish.

Calcined alumina for refractories:
There are two kinds: Coarse powder and Fine powder
Specs
Type Al2O3﹪ Na2O﹪ SiO2﹪ Fe2O3﹪ Ture Density g/cm3 α–Al2O3﹪ Primary crystal size
μm
NX—1 99.7 0.1 0.05 0.03 3.95 95 1
NX—2 99.5 0.15 0.08 0.03 3.94 95 1-2
NX—3 99.0 0.20 0.15 0.04 3.93 94 2-3
Coarse powder:

Fine powder sizes:
Siz 325 mesh 500mesh 800mesh 5µm 3µm 2µm 1µm
NX—1 ● ● ● ● ● ● ●
NX—2 ● ● ● ● ● ●
NX—3 ● ● ● ● ●




Calcined alumina for ceramics:
Specs
Type Al2O3﹪ Na2O﹪ SiO2﹪ Fe2O3﹪ LOI﹪ Ture Density g/cm3 α–Al2O3﹪ Primary crystal size μm
NX—1 99.7 0.03 0.04 0.02 0.1 3.97 96 3~5
NX—2 99.7 0.08 0.05 0.03 0.1 3.96 95 2~4
NX—3 99.7 0.05 0.04 0.02 0.1 3.96 96 2~3
NX—2 99.7 0.08 0.05 0.03 0.15 3.94 95 ＜1
NX—3 99.8 0.05 0.04 0.02 0.1 3.95 96 1~2


● We also could produce the specs based on the customer’s request.

SINABUDDY MINERAL CO.,LTD