Specifications of KABE
The character of the original bleaching earth determines the product properties. Another variable is the particle size - the finer the particle size, the better the bleaching properties - except that fine particle size adversely affects filtration times and oil retention on filter cake. Therefore, universally accepted specifications and procedures are not possible.
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KABE for the Petroleum
Industry: Granular form |
KABE for the Edible
Oil Industry: Powder form |
Measured Physical Properties of KABE:
| Mesh Size % by mass |
30/60 BSS/ASTM |
| Moisture |
6 |
| Loss on ignition |
6.39 |
| Silica as SiO2 |
51.50 |
| Iron as Fe2O3 |
8.98 |
| Alumina as Al2O3 |
9.84 |
| Calcium as CaO |
4.14 |
| Magnesium as MgO |
5.40 |
| Titanium as TiO2 |
1.57 |
| Sodium as Na2O |
0.06 |
| Potassium as K2O |
1.44 |
| Acidity as H2SO4 |
Nil |
| Alkalinity as NaOH |
0.70 |
Chemical Specifications of KABE
| Mesh Size % by mass |
30/60 BSS/ASTM |
| pH Value |
6 |
| Moisture |
Below 7% |
| Density |
0.6 to 0.7 |
| Oil Retention before air blowing |
27% |
| Filterability |
7 minutes |
| Particle Size |
85% passing through 150 Mesh size |
| Nature of Oil |
Neutral (free from gummy matters) |
| Percentage of earth used |
1~2% |
| Temperature |
110°C |
| Contact Time (in lab) |
30 minutes |
Method of Disposal
KABE once used has to be disposed off since it cannot be reused. The method of disposal is efficient, useful as well as environment-friendly. The material is collected and used as fuel in furnaces. The oil in the granules is used as fuel and what is left is clay, which is easy to dispose.
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