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Calcined Alumina
Sizes Available:
100-325mesh, 325mesh, 500mesh, 800mesh,
5μm, 3μm, 2μm, 1μm;
Other sizes are also available on request.
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Calcined Alumina is produced through the calcination of alumina with various temperatures.
We are able to produce a range of high alpha alumina grades with controlled soda chemistry,
surface area and size distributions.
It is widely used for the unshaped refractories and shaped refractories, pre-cast shapes used
in foundry, iron and steel making, wear-resistant ceramics, glazes, high temperature
resistant porcelain, electronic substrate, etc. It also could be used as grinding and polishing
materials.
Specification:
| Index |
Refractories grade |
Ceramics grade |
Polishing grade |
| Al2O3 |
99.3~99.7% |
99.4~99.8% |
99.4~99.6% |
| Fe2O3 |
0.02~0.05% |
0.03~0.04% |
0.03~0.05% |
| Na2O |
0.2~0.35% |
0.15~0.35% |
0.2~0.35% |
| SiO2 |
0.01~0.15% |
0.03~0.05% |
0.15~0.2% |
Specific Surface Area
(BET) m2/g |
0.8~2 |
0.3~2 |
1.5~2 |
| Primary crystal size μm |
1~6 |
1~5 |
1~4 |
Other specifications are also available on request.
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