Sericite Powder

I. Overview Is a sericite mica, which are layered silicate minerals with. Sericite has a very wide range of uses for rubber, plastics, paints, ceramics, insulation, cosmetics, paint, paper making, metallurgy and other industries. Scaly sericite crystals, crystal aggregates in blocks, was gray, purple pink, white, with silky luster. Scaly sericite crystals, crystal aggregates in blocks, was gray, purple pink, white, with silky luster.
Second, the structure, chemical composition Is a natural fine-grained muscovite, sericite, muscovite is a subspecies, is layered silicate, silicon-oxygen tetrahedron structure sandwiched by two layers of aluminum octahedral layer compound consisting of silicon oxide layer. Cleavage completely, can be split into very thin sheet, film thickness up to 1um the following (in theory can be whittled 0.001um), radius to thickness ratio; compared with the muscovite: a natural small size, easy to process fine characteristics. Sericite crystal chemical formula: K0.5-1 (Al, Fe, Mg) 2 (SiAl) 4O10 (OH) 2 nH2O, the general chemical composition: SiO2: 43.13-49.04%, Al2O3: 27.93-37.44%, K2O + Na2O :9-11%, H2O: 4.13-6.12%. Third, the physical properties
Sericite is monoclinic crystal, crystal scaly, with silky luster (shiny glass muscovite was), the pure block gray, purple pink, white, radius to thickness ratio> 80, the proportion of 2.6-2.7, hardness 2 - 3, flexible, flexible, abrasion resistance and good wear resistance; heat insulation, insoluble in acid solution, chemically stable. Test data: modulus 1505-2134MPa, heat resistance 500-600oC, thermal conductivity of 0.419-0.670W. (MK) -1, electrical insulation 200kv/mm, anti-radioactive 51014 thermal neutrons / cm2 and Contrast.
Sericite other chemical composition, structure, structure, and kaolin are similar, but also has some characteristics of clay minerals, namely, water and organic solvents, dispersion media, good suspension, fine grain color white, sticky and so on. Therefore, both sericite mica minerals and clay minerals in a variety of features.
Fourth, classification and distribution of sericite deposits
China's large reserves of mineral resources, sericite, and also more widespread, but it is worth less development and utilization. According to the genesis of sericite, sericite deposits will generally be divided into sericite schist-type deposits (Chuzhou sericite ore), porphyry-type alteration sericite deposits (Liu Jia Wan Jingdezhen porcelain quarry), type of sericite altered volcanic deposits (south of Zhejiang, Fujian Nanan sericite quartz rock and other places), the secondary illite sericite quartzite-type deposits (pyroclastic eastern Zhejiang sericite altered illite mineral), sericite illite clay deposits in rock type (Beijing Huairou , southern Sichuan and other places illite clay mineral), which ore development and utilization of sericite schist-type value of the maximum, because of such characteristics of sericite mica ore is most obvious.
Division I All the products come from Chuzhou sericite, and has a large production base, product quality has a great advantage.
Fifth, sericite powder coatings
Application of sericite and other inorganic fillers Comparison