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DescriptionApplications of DURALUM® ABTypical Chemical Analysis of DURALUM® ABTypical Physical Properties of DURALUM® ABSizes Available
Description
DURALUM® AB is an electric arc furnace product made from high purity Bayer process alumina. Product chemistry is similar to that of white aluminum oxide. Bubbles are formed from molten alumina, resulting in hollow spheres of low bulk density.
Applications of DURALUM® AB
DURALUM® AB, bubble alumina, is used in the production of lightweight insulating refractories where low thermal conductivity, and high temperature properties are the prime requirements. DURALUM® AB is also used effectively for loose-fill refractories.
Typical Chemical Analysis of DURALUM® AB
Typical chemical analysis of DURALUM® AB is descibed in the table below.
| TYPICAL CHEMICAL ANALYSIS |
| Chemical |
Composition |
| Al2O3 (by difference) |
99.20% |
| SiO2 |
0.60% |
| Fe2O3 |
0.02% |
| Na2O |
0.15% |
| CaO |
0.01% |
| Other Oxides |
0.02% |
Typical Physical Properties of DURALUM® AB
Typical physical properties of DURALUM® AB are provided in the following table.
| TYPICAL PHYSICAL PROPERTIES |
| Physical Property |
Specification |
| Crystallography |
Alpha alumina, in the hexagonal crystal system |
| Color |
White |
| Shape |
Spherical shaped hollow bubbles |
| Average crystal size |
2,500 microns, no matrix |
Sizes Available
DURALUM® AB Bubble Alumina is available in the following grit sizes:
Standard: 4 / 10, 6 / 10, 10 / 20, 14 / 40, 20 / 36, 36 / F
Additional Sizes: 4 / 6, 4 / F, 6 / F, 10 / F, 20 / F
Source: Washington Mills
For more information on this source, please visit Washington Mills.