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What is Diatomite?

Aug. 12, 2021

As a Diatomite Manufacturer, share with you. Diatomaceous earth is composed of amorphous SiO2, and contains a small amount of Fe2O3, CaO, MgO, Al2O3 and organic impurities. Diatomaceous earth is usually light yellow or light gray, soft, porous and light. It is commonly used in industry as insulation materials, filter materials, fillers, abrasive materials, water glass raw materials, decolorants, diatomite filter aids, and catalyst carriers.

Diatomite Rock For Sale

Diatomite Rock For Sale

The special porous structure of natural diatomaceous earth can be observed under the microscope. This microporous structure is the reason for the characteristic physical and chemical properties of diatomaceous earth.

The main component of diatomaceous earth as a carrier is SiO2. For example, the active component of the industrial vanadium catalyst is V2O5, the promoter is alkali metal sulfate, and the carrier is refined diatomaceous earth. Experiments show that SiO2 has a stabilizing effect on the active components, and it strengthens with the increase of K2O or Na2O content. The activity of the catalyst is also related to the dispersion and pore structure of the carrier. After diatomite is treated with acid, the oxide impurity content is reduced, the SiO2 content is increased, and the specific surface area and pore volume are also increased. Therefore, the carrier effect of refined diatomite is better than that of natural diatomite.

Diatomaceous earth is generally formed from the remains of silicate after the death of single-celled algae collectively called diatoms, and its essence is water-containing amorphous SiO2. Diatoms can survive in fresh water and salt water. There are many kinds of diatoms. Generally, they can be divided into "central order" diatoms and "pinnacle order" diatoms. In each order, there are many "genus", which is quite complex.

The main component of natural diatomaceous earth is SiO2, high-quality ones are white, and the content of SiO2 often exceeds 70%. Monomer diatoms are colorless and transparent. The color of diatomaceous earth depends on clay minerals and organic matter. The composition of diatomaceous earth from different mineral sources is different.

Diatomaceous earth is a fossilized diatomaceous earth deposit formed after the death of a single-celled plant called diatom after an accumulation period of about 10,000 to 20,000 years. Diatoms are one of the first protists to appear on the earth, living in sea water or lake water.

This diatomaceous earth is formed by the deposition of the remains of single-celled aquatic plant diatoms. The unique property of this diatom is that it can absorb free silicon in the water to form its bones. When its life is over, it is deposited under certain geological conditions. The formation of diatomite deposits. It has some unique properties, such as: porosity, lower density, larger specific surface area, relative incompressibility and chemical stability. After crushing, sorting, calcining, airflow classification, and removing the original soil After miscellaneous processing procedures change the particle size distribution and surface properties, it can be applied to various industrial requirements such as paint and paint additives.

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