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Home >other chemical products > >Activated Bleaching Earth
Activated Bleaching Earth
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Molecular Formula: H2Al2(SiO3)4-nH2O          

CAS Code: 70131-50-9

H.S.Code: 3802900090

 

Constitutional Features

The laminated structure Exists between molecules. With a great number of irregular cavities on the surface, it has a large specific surface area.

Physical & Chemical Characteristics

A kind of hypo-white powder, which is odorless, tasteless and non-poisonous, the product has a bulk density of 0.7~1.1g/ml. Having dispersivity, the product feels greasy. It is insoluble to water, organic solvent, and various oils & lipids.

Additionally, it has strong performance in ion interchange, selective adsorption, hydrophilicity, surface activity and catalysis. Upon being heated to over 300, the product starts to lose crystallization water, with its structure subject to changes and the decolorizing performance affected. In case of long storage or exposure to moisture, the absorbability can be degraded.

Capable of removing (by absorbing) asphaltene, neutral gelatine, sulfide, mineral matter of alkene naphthenic acid, and alkaline nitrogen in the lubricating oil. It improves durability & optical safety in lubricating oil. it improves durability & optical safety in lubricating oil as well as enhances anticorrosion property.

Besides, this product can be used to remove (by absorbing) pigments, flavacol B1 (AFTB1) and the carcinogenic substance of 3~4 benzoic pyrene in animal & vegetable oils.    

Applications & Rang of Use

1In refinement of animal & vegetable oils, used for decolorization and purification to eliminate harmful pigments, flavacol, phospholipid, saponin, gelatine, and cotton acid etc. from the oil, rendering it into top-grade cooking oil.

2For decolorization & refinement of industry-used animal & vegetable oils.

3In petroleum industry, used for decolorization, refinement and purification of petroleum, grease paraffin, white oil, lubricating oil, Vaseline, and kerosene etc.

4For recycling and regeneration of industrial waste oils (including mineral oil, such as machinery oil and lubricating oil etc.)

5For decolorization & depuration of resin.

6For decolorization & depuration of polyether.

7In food industry, used as clarificant for monosodium glutamate vitamin, grape wine, candy juicy; used for stabilizing treatment of beer, and used for purification of sugar juices.

8For alkene separation in arene and alkane, cracking of petroleum and alkene polymerization catalyzed.

Packing, Storage, Transport and Precautions     

1The internal bag is polythene film bag while the external bag is polypropylene plastic woven bag; or the internal bag is polythene film bag white the external bag is composite paper bag. Each bag has a net weight of 25kg. The packing can be customized to the customer’s needs.

2Store in a ventilated and dry place. Employ a clean carrying vehicle for transportation; every effort should be made to avoid drastic shock; leisurely handling is recommended in loading & unloading to prevent any damage on the container bag. Guard against moisture and never expose the product to rains.

3Due to its strong water absorption, the product can have its performance lowered by influence from dampness.

Two important conditions of guaranteeing the quality:

Raw Material:

Choosing the good quality bentonite excavated from the area of about 100 meters deep from the earth’s surface, its purity is higher than that from the earth’s surface; activated reacting with high quality concentrated sulphuric acid with the bentonite. It is the base of good quality of activated clay.

Drying Technology

At first, Coal hot air furnace produces the high temperature flue gas. The heat energy is exchanged through the calandria of heat exchanger and getting the hot air. Then the hot air is guided into the desiccator to dry the bleaching earth. The High temperature flue gas is exhausted from smoke funnel after exchanging the heat with the heat exchanger. The purity of bleaching earth is higher by the above way of drying, comparing with drying with the high temperature flue gas entering the desiccator directly.

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