Diatomaceous earth, this is the diatom biological remains. Diatoms are very tiny algae, abundant in nature, under certain special conditions will be enriched up their remains, on the same soil macro material natural deposition. Here we learn to understand it through Celite.
What is diatomaceous earth?
Formula (Formula): SiO2
Molecular weight (Molecular Weight): 60.08
CAS No.:61790-53-2 Diatomite is a siliceous rock, mainly in China, the US, Denmark, France, the Soviet Union, Romania and other countries. Reserves of 320 million tons of diatomite, prospective reserves of 20 billion tons, mainly concentrated in eastern and northeastern regions, among the larger, more work done, Jilin, Zhejiang, Yunnan, Shandong, Sichuan and other provinces, distribution although broad, but focused only on high-quality soil, Jilin Changbai, Yunnan diatomite mining, resources are particularly rich in most other deposits in the soil grade 3 to 4 due to high impurity content, not directly deep processing.
Diatomaceous earth of amorphous SiO2 in composition, and contains small amounts of Fe2O3, CaO, MgO, Al2O3, and organic impurities. Celite usually pale yellow or light gray, soft, porous and light, commonly used industrially as insulation materials, filter materials, fillers, abrasive materials, sodium silicate raw materials, bleaching agents and diatomaceous earth filter aid, catalyst support Wait.
Observed under the microscope particular natural porous structure of diatomite, diatomaceous earth is the reason that the microporous structure characteristic physicochemical properties.
Diatomaceous earth, called diatoms after the single-celled plants die after accumulation of about 1-2 years, the formation of a fossil diatom accumulation of soil deposits. Diatoms are one of protists first appeared on Earth, to survive in the sea or lake. It is this diatom, providing oxygen to the Earth through photosynthesis, promoting the birth of human beings, animals and plants. This diatomaceous earth is formed by a single-celled aquatic diatom remains deposition, the unique properties of diatom that can absorb water to form its free silicon skeletons when deposited after the end of its life, in certain geological conditions formation of diatomite deposits. Diatom mud has some unique properties, such as: porosity, low density, large specific surface area, the relative incompressibility and chemical stability, the original soil by crushing, sorting, calcination, air classifier after miscellaneous other machining processes to change its distribution and surface properties of the particle size, the requirements applicable to a variety of industrial paints and coatings additives.