Activated Clay

highly activated clay attapulgite clay powder price for palm oil bleaching

Application:

1. Refining plant oils like soyabean oil, corn oil, palm oil, coconut oil, sunflower oil, peanut oil, cotton seed oil, olive oil, rice bran oil, castor oil,linseed oil, tung oil, rapeseed oil, etc.
2. Refining animal oils like fish oil, lard oil, tallow oil, ect.
3. Refining industrial oils like used lubricants oil, motor oil, engine oil, automative oil, paraffin wax, olefin, diesel, etc.
4. Juice and wines' clarifying.
5. Medicine and environmental industries:
Antidote and adsorbing materials,waste water treatment.

Important Points During Bleaching: 
1. Normally about 0.5%- 3% of earth is required for bleaching application of vacuum during process which results in less oxidation & improvement in oil colour.
2. Choice of Bleaching clay as per its characteristics.
3. Total acidity (titrable acidity) of clay is expressed as mg of KOH/g of clay on a hot water extract.
4. Moisture content of Earth is vital as activity of clay depends on the evaporation of moisture from earth after its admixture with oil (10 % max free moisture is desirable).
5. The Particle size of Earth affects filtration & oils retention as per type of earth used & determines losses during bleaching process.
6. Operations & maintenance of filters is very important during process.
7. Treatment with Acid Activated Bleaching Earth in post-bleaching step removes traces of Nickel from hydrogenated oils (0.25-0.5% of earth used).

Oil Loss Economics During Bleaching:
Spent Earth carries around 30% of oil on dry basis by hot water washing of filter press, the oil content can be brought down to 22% on the average.