What role does diatomite play in diatom mud and diatom wall materials?

Diatom is a kind of unicellular algae that first appeared on the earth. It lives in seawater or lake water. Electron microscope shows that diatom mineral is a kind of porous material close to nanometer level (micropore diameter is about 0. 1-0.2 micron), and the porosity is as high as 90%. It is arranged in regular circles and needles, and the number of micropores per unit area is thousands of times that of charcoal. Outstanding molecular lattice structure features determine its unique function. Diatom minerals have strong physical adsorption and ion exchange properties, and are widely used in alcohol and medical injection filtration, food additives, nuclear radiation adsorbents and many other fields after finishing. Diatomite has many special technical and physical properties, such as large porosity, strong adsorption, light weight, sound insulation, wear resistance and heat resistance, and certain strength, because it is fine, loose, light, porous and has strong water absorption and permeability. In recent years, people have applied this characteristic to indoor coatings and developed a series of wall materials, such as diatom mud and diatom wall materials, which can ventilate and adjust humidity. Diatom mud is not equal to diatomite. Diatom mud does not decompose harmful gases such as formaldehyde. Diatom itself does not decompose harmful gases, but only acts as a carrier and channel. No one will tell you how much diatomite there is in diatom mud, 90% of which is called diatom mud, and 1% is also called diatom mud. No one can tell how much it should contain. At present, the water spray test that fools consumers on the market is not necessarily true. It is good to add lime to absorb water, and the dry cement wall also absorbs water, which has strong water absorption. What can really explain the quality of the product is the formula ratio of various substances in diatom mud, especially the content of diatom mud, and whether other substances are added. But this is nobody, including the so-called big brands. Diatom mud combined with diatomite and reasonable material ratio can automatically adjust indoor humidity. When the indoor humidity rises, the ultra-fine pores on the diatomite wall material 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. The publicity of merchants in the market is only the publicity of product functions and concepts, and never mentions the indicators (contents) that can best explain product quality. Allosaurus diatom mud can effectively remove harmful substances such as free formaldehyde, benzene and ammonia, as well as odors generated by pets, smoking and garbage, and purify indoor air by using the structural characteristics of diatoms as carriers and adding special functional additives. Diatomite is widely used. Diatomite is a filter material, which can be used as a filter to separate suspended solids in liquid. The filter aid produced by diatomite is widely used for filtering liquids, syrups, oils, varnishes, fertilizers, organic and inorganic solutions, medicines, water and other liquids. Industrial fillers and additives: Diatomite, as a functional filler, is widely used in coatings, plastics, rubber, medicine, toothpaste, pharmacy, paper making, asphalt products and other industries, which greatly improves the product performance. Catalyst carrier: Diatomite can be used as the activation carrier of more than 20 kinds of catalysts such as V205, and used in more than 30 kinds of chemical reactions such as oxidation, hydrogenation, synthesis and reduction, such as vanadium catalyst carrier in sulfuric acid industry, phosphoric acid catalyst carrier in petroleum industry, nickel catalyst carrier in hydrogenation reaction and gas chromatography carrier in chromatographic analysis. Reinforcing agent: The particle structure of diatomite can play a reinforcing role in different materials such as silicone rubber products and mechanical rubber products. Thermal insulation material: Diatomite and its products have strong thermal insulation and low air permeability, which can be used for thermal insulation of boilers, distillers, heat treatment furnaces and dryers, as well as light thermal insulation boards, thermal insulation bricks and thermal insulation pipes. Building materials: Diatomite can be used as a mixture of concrete, cement and plaster. It can also be used to prepare high silica cement and portland cement. Diatomite is also one of the raw materials for making lightweight building bricks and waterproof building materials. Flexible abrasive: Diatomite can be used to prepare grinding paste, liquid abrasive and other metal polishing powder. High-purity diatomite fine powder can be added to the formula of silver polishing powder and used as polishing agent for automobiles. Other aspects: Diatomite can be used as anti-caking agent for ammonium nitrate particles, matchheads, coated electrode assemblies, additives for concrete and drilling mud, animal feed supplements, pesticides, chemical fertilizers, pesticide carriers, explosive density regulators, etc.