Most consumers don't know what diatomite is? What is diatomite used for? How can it play such a big role? Today, with these questions, Xiaobian will show you the secret of diatomite.

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Diatomite is mainly used as filter aid, filler, adsorbent, catalytic carrier, environmental protection building materials and so on.

1. Filter aid

The important use of diatomite is as filter aid. Its main application fields include beer industry, pharmaceutical industry, water purification filtration, oil industry, mail solution, coating and dye, fertilizer, acid, alkali, seasoning, sugar, wine and other filtration.

Diatomite filter aid can be divided into dry products, roasted products and melting roasted products according to the production process. The dried product is diatomite, which is prepared by beneficiation, drying below 800 ℃ and grading, code named GZ; The roasting grade is prepared by beneficiation, drying, roasting at 800-1200 ℃ and grading, code named PZ; The melting aid roasted product is prepared by beneficiation, drying, roasting at 800-1200 and grading, code named ZZ. Due to different processing conditions, the particle size of dried products is relatively fine, the filtration rate is the lowest, but the filtration quality is high; Roasted products are in the middle; The particle size of the calcined product is relatively coarse, the filtration rate is fast, but the filtration quality is poor. At present, the amount of dry products is very small, mainly using roasted products and flux roasted products, which are usually used together.

2. Filler

The second major use of diatomite is as functional filler, which is mainly used in coatings, plastics, rubber, medicine, papermaking, abrasives, precision castings and microporous ceramics. Diatomite as filler of paint coating can improve the stability, elasticity and dispersion of products, and improve the strength, wear resistance and acid resistance of products. As a functional filler, diatomite can also play a role in extinction. If diatomite is added to silicone rubber, the oil resistance and heat resistance of rubber can be enhanced, and the processability can be improved.

Using diatomite as filler to produce paperboard can save pulp by 20%, which not only reduces the production cost, but also improves the cleanliness and strength of paperboard.

High quality diatomite is filled into automobile brake lining and asbestos friction plate for mechanical industry. It is easy to combine with resin and other materials. It has special combination with rubber oil. It not only has filling effect, but also has reinforcing effect. It can overcome the thermal degradation performance of products and enhance the adaptability of products.

Diatomite itself has a large number of micropores, so it is a good filler for the preparation of microporous ceramic membrane tubes. Some people have successfully developed diatomite microporous ceramic membrane tube with high-quality selected diatomite as filler.

3. Adsorbent

The adsorption of diatomite is mainly physical adsorption, with fast adsorption rate and strong adsorption capacity. It is mainly used for urban sewage, papermaking wastewater, printing and dyeing wastewater, slaughter wastewater, oily wastewater and heavy metal wastewater. The application of diatomite as adsorbent is similar to that of filter aid. It is required to meet the hygienic standard when it is used in the adsorption and refining of food.

4. Catalytic carrier

Diatomite has appropriate specific surface area, high porosity, wear resistance, acid resistance, heat resistance and other characteristics. It has become an ideal carrier of catalyst for oxidation, hydrogenation, dehydrogenation, hydration, reduction and other reactions.

The antibacterial agent using diatomite as antibacterial agent carrier has strong adsorption capacity, and the antibacterial solution is adsorbed into the micropores of diatomite and released slowly, so it becomes a long-term antibacterial agent. The antibacterial ring with diatomite as carrier is basically the same for 40d and 2D, but the antibacterial ring without diatomite as carrier is obviously smaller.

5. Environmental protection building materials

After entering the 21st century, people pay more and more attention to environmental protection. This awareness of environmental protection is not only reflected in the natural environment, but also in the living room. In order to meet people's needs, diatom mud ecological wall materials came into being. Because of its special structure, diatomite has become an excellent material for diatom mud ecological wall material. The wall material produced by diatomite has the characteristics of super fiber and porous, and its ultra-fine pores are 5000 to 6000 times more than activated carbon. When the indoor humidity rises, the micro pores on the diatomite wall can automatically absorb the moisture in the air and store it. If the moisture in the indoor air decreases and the humidity decreases, the diatomite wall material can release the moisture stored in the ultra-fine pores. Secondly, the diatom mud ecological wall material also has the function of eliminating peculiar smell and keeping the room clean. When used in family and hotel toilets, it can remove odor gases such as hydrogen sulfide and ammonia, kill harmful bacteria and prevent the spread of diseases. When used in the car room, it can remove the harmful gas emitted by the car interior decoration products, as well as the smell of body odor, oil, smoke or vomiting due to carsickness.