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| Typical Technical Parameters |
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| Activated Alumina (Fluoride Removal) |
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| PROPERTIES |
| SHAPE |
GRANULES |
| Grain Size, mm |
0.40 - 1.0 |
| Bulk Density, gm/cc |
0.83 - 0.87 |
| Absorption Capacity Wt% (at 60% RH and 30°C) |
17 - 21 |
| Surface Area, m²/gm |
250 - 310 |
| Bed Crushing Strength, % |
96 - 99 (using 60 mesh test sieve) |
| Loss on Attrition, % |
0.1 - 0.5 |
| Moisture, Wt% |
0.1 - 2 |
| Al2O3 (by difference) Wt% |
91 - 93 |
| Na2O3, Wt% (max) |
0.6 |
| Fe2O3, Wt% (max) |
0.1 |
| SiO2, Wt% (max) |
0.09 |
| Loss on Ignition (250°C -100°C) |
6.5 - 7.5 |
| The yield of treated water (Fluoride < 1.5 mg/lit) will be > 170 lit/kg of Activated Alumina per cycle when raw water having Alkalinity 420 mg/lit, pH 7.3 and Fluoride 10.8 mg/lit is passed through a bed with flow rate 9 - 12 lit/hr. Under this standard condition Fluoride uptake capacity should not be less than 1800 mg/kg of Activated Alumina. |
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| Activated Alumina |
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| PHYSICAL PROPERTIES |
| GRADE |
OA-37 |
OAE-37 |
OA-25 |
OA-200 |
| Form |
Sphere |
Extruded Rods |
Spherical |
Spherical |
| Size (mm) |
3 - 5 |
Dia 3.5 - 4.0 Length 8 - 12 |
3 - 5 |
3/16" |
| Bulk Density (kg/ltr) |
0.75 ± 0.05
05 |
0.50 ± 0.05
- |
0.86
- |
0.75 ± 0.05
- |
| Surface Area, m²/gm (min) |
- |
- |
- |
300 |
| Crushing Strength, kg (Av. Point Load of 20 (samples)) |
10.0 |
7.0 |
10.2 |
22.0 |
| Water Absorption (At Equilibrium)(min) (at 60% RH and 30°C) |
10.0 |
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| Loss on Attrition, by wt |
20.0 |
20.0 |
16 |
- |
| Total Pore Volume, cc/gm (min) |
- |
- |
- |
0.5 |
| CHEMICAL ANALYSIS ON DRY BASIS BY WT |
| Al2O3 (min) |
92.00 |
92.00 |
93.90 |
94.00 |
| SiO2 (max) |
0.05 |
0.05 |
0.15 |
0.02 |
| Fe2O3 (max) |
0.20 |
0.20 |
0.05 |
0.02 |
| Na2O (max) |
0.30 |
0.30 |
0.30 |
0.30 |
| L.O.I.: (max at 1000°C) |
7.00 |
7.00 |
4.62 |
- |
| Ignition Loss, Wt% (max) |
- |
- |
- |
5.00 |
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