Contact-Process
Activated Fuller’s Earth used in the
contact process employed for decolorizing oils, greases and waxes
is in the powder form. It highly improves its Tintometer readings.
Contact filtration process: Contact filtration
is the direct agitation of a mixture of a very fine clay and
oil, usually at elevated temperature, for a definite period of
time to accomplish a desired result.
Bleaching: The selective removal of pigments
from oils and fats by adsorption on clay, specially chosen and
activated for specific effects is a term known as bleaching.
This is the oldest and still the most common
procedure for removing pigments, neutralizing, decolorizing and
getting rid of other unwanted minor components from oils destined
for edible or technical use.
In the modern world it is also used to recondition used and waste
oils of various kinds.
The basic plant consists of
- A cylindrical vessel having a conical
bottom with an impeller attached.
- Settling tank.
- Heat generator.
- Filter press.
- Raw and bleached oil holding reservoirs.
There are now even conventional plant assemblies available capable
of performing the contact filtration and press filtration in
a single unit.
A pre decided amount of clay is introduced into the oil maintained
at desired temperature, which varies from oil to oil, as all
oils behave differently. Agitation time is always maintained
between 20- 30 minutes.
The oil/clay mixture is then either allowed to settle or passed
through a filter press. It has been recognized for decades that
in the short period that oil spends passing through the chamber
of the filter press a very useful degree of further adsorption
takes place. This is called the “press bleach” effect.
PRODUCTS
- SUPER BLEACH
- SUPER 84 sp
- SUPER 64 sp
- FULLERS EARTH
Our company follows a policy of customizing the product as per
the consumers needs. We would be glad in assisting you to choose
a grade that is best suited for your purpose.
“IF IT IS AN OIL, CONSIDER IT BLEACHED”
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