activated bleaching earth for tallow  oil

 1.bleaching earth characters:

1) strong decoloring-ability

2) good adsorption

3) low free acid  

2. bleaching earth working: 

emerge and separate some matters, such as pigment,colloid,impurity,

dram heavy metal in lipid which can cause oxidant and activator toxic. 

3. bleaching earth usage: 

Broadly speaking, activated bleaching earth finds use in following fields:

1) Refining of Vegetable oils like :

Cottonseed, Soyabean, Sunflower, Rapeseed, Mustard, Peanut, Coconut,

 Corn, Olive, Ricebran, Palm, Linseed, Castor, tung oil and so on.

2) Refining of hydrogenated vanaspati ghee oils, Margarine & shortening.

3) Refining of Animal Fats like tallow oil, fish oil, lard oil.

4) Refining of Mineral Oils like:
- paraffin and waxes
- insulating oil
- rolling oil
- white oil
- waste oil (lubricating oil)

- vaseline

- olefin