Highly activated bleaching earth
Type:ATL-4
Product description
ATL4 is a highly active bleaching earth used in a wide scope of applications. It is manufactured by acid activation of calcium bentonite.
ATL4 is well suitable for the removal of polar compounds like chlorophyll, carotinoids, phospholipids and peroxides, via chemisorption and acid catalysis.
ATL4 is very suitable for refining vegetable and animal oils and fats, moreover for finishing and/or reprocessing numerous types of mineral oils, paraffins and waxes.
Physical/chemical characteristics (typical product data)
Apparent bulk density g/l 600
Free moisture (2 h, 110 °C) % ~ 12
Loss on ignition (predried, 2 h, 1.000 °C) % 7,4
pH (10% suspension, filtered) - 3,0 –4,5
Acidity mg KOH/g 0,2
Chloride content mg Cl/g 0,01
Surface area m²/g 171
Free acid(calcalated as H2SO4 ) % 0.01 Decolorization ability % 96
Filtration properties
The filtration time remains below 50seconds.
Particle size distribution
The particle size of ATL-4 is determined by a sieve analysis of the dry powder. The following average values have been found for the various sieve fractions:
> 150 µm % 2
> 45 µm % 50
Chemical analysis
ATL-4 (dried at 110°C for 2 hours) has the following composition (average values):
SiO2 % 64,7
Al2O3 % 15,5
Fe2O3 % 4,1
CaO % 1,6
MgO % 2,7
Na2O % 0,8
K2O % 2,4
