Activated clay product description, chemical composition and development prospects

Activated clay is a clay (mainly bentonite) as raw material, the inorganic acid, followed by water rinsing, drying adsorbent made of, look for the milky white powder, odorless, tasteless, non-toxic, strong adsorption, can adsorb colored material, organic matter. Easy to absorb moisture in the air, place too long will reduce the adsorption properties. However, heated to 300 degrees Celsius above began to lose water of crystallization, the structure changes, effects of fading effect. Activated clay is insoluble in water, organic solvents and oils, almost completely soluble in hot caustic soda and hydrochloric acid, the relative density of 2.3 ~ 2.5, in water and oil swelling minima.

Mainly white and pink, odorless and tasteless, non-toxic, good activity, strong adsorption, easy to absorb moisture in the air, such as placing too long or moisture will reduce its adsorption function, the use of appropriate heating (80 to 100 degrees) resurrection, if heated to 300 degrees above began to lose water of crystallization, itself changes in the structure, affecting decolorization.


1, selective adsorption ability, the decolorization rate high, with a low rate of oil, filtration speed, add less;

2, effectively remove grease total phospholipid, soap and trace metal ions, is a natural antioxidant;

3, removal of oil in aflatoxin, pesticide residues and other toxins and odor;

Acid number 4, after bleaching not rise, do not back color, clear and transparent, stable quality, long shelf life.

Refining production 5, especially suitable for mineral oil, vegetable oil, animal oil.

Animal and vegetable oil refining, for the decolorization and purification, remove harmful pigment, oil phospholipid, saponin, cotton acid, making high-grade edible oil.

In the petroleum industry for refining decolorization and purification as well as petroleum cracking of paraffin wax, oil, grease, kerosene and other minerals.

Activated Clay

In the food industry, as Wine and sugar juice clarifying agent, stabilizing, beer saccharification processing, the syrup purification etc..

In the chemical industry, as a catalyst, filler, desiccant, adsorbent, wastewater treatment.

National defense, medical health, can be made of chemical drug agents, antidote, along with the development of society and science, more and more extensive application of activated clay.

The scope of application

Activated clay than the large surface area, strong adsorption capacity, high decoloration efficiency; activity was low, do not react with grease and other chemical substances; used for filtering liquid decolorization speed fast, residual liquid rate is low, such as edible oil bleaching, sugar decolorization decolorization; after the liquid is transparent and clear, stable quality, no smell, no to color, not acid; after using the product, after proper treatment can be used for the two time, it will not cause environmental pollution and other products and the advantages of wide application in adsorption, granular clay, carbonless copy paper with chromogenic agent.

(a) adsorbent

By 1, edible oil bleaching products are widely applicable to all types of vegetable oil, animal oil and mineral oil, such as soybean oil, rapeseed oil, peanut oil, cottonseed oil, sunflower oil, palm oil, coconut oil, castor oil, tea oil, corn germ oil, refined oil, sesame oil, tung oil, red flower oil etc..

2, sugar decolorization decolorization products by the rich magnesium aluminum silicate purification refined sugar, its colour and lustre, reducing sugar content, pH, ion content, thionyl chloride ion content, protein content, sugar boiling temperature and calcium and magnesium ions content reached the current standard, save the decolorizing treatment costs about 60%. The filter cake after decolorization of mixed feed, reduce environmental pollution, to achieve comprehensive utilization.

3, environmental odor absorbing agent level product has good adsorption odor, odor can eliminate the refrigerator, pet bedroom, toilet and other places.

(two) the particulate clay

(three) no color agent with carbon paper

Economic benefit analysis of bentonite raw material price is about 250 yuan / ton, ordinary activated clay the domestic market price of about 1200 yuan 1500/ tons.

According to the 10000 tons of activated clay size estimation, equipment and infrastructure investment of about 300 – 4000000 yuan, cost 600 to 700 yuan / ton, the annual output value of 14000000 yuan, profits and taxes 6000000 yuan. If the production of white carbon black, 4A molecular sieve higher benefits. Bentonite is our advantage in resources, reserves ranking first in the world, but the development and utilization of deep processing started late, backward technology, poor product quality, production scale is small, high-quality activated clay domestic oil bleaching and other departments use still need to be imported from abroad. USA activated clay production capacity has reached 4000000 tons / year or more, and our country is only 200000 tons per year. According to statistics, in recent years in China on activated clay demand at an annual increase rate of 7-8%. After investigation and analysis of the domestic market, only the oil refining market is huge, according to industry experts predict, China’s annual output of various vegetable oil is about 8000000 tons, imported oil 500 – 6000000 tons of refined oil, which accounted for 1/2, about 6500000 tons. Therefore, the production of activated clay and broad market prospect.

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