Non-metallic mineral powder I - mica

Mica is the general name of the mica group minerals. It is an aluminosilicate containing potassium, aluminum, magnesium, iron, lithium and other metals. Its structure is layered. From the perspective of formation, it can be divided into natural mica and artificial mica.

Muscovite phlogopite and synthetic phlogopite

Natural phlogopite can be divided into dark phlogopite (brown or green in various colors) and light phlogopite (light yellow in various colors). Light phlogopite is transparent and has glass luster; Dark phlogopite is translucent, glass luster to semi-metallic luster, and cleavage surface is pearly luster. The sheet is elastic. Hardness 2-3. The specific gravity is 2.70 - 2.85. Not conductive.

Market and application of "mica material" thermal insulation sheet for power battery

Mica materials are often used in power battery systems to insulate and insulate, slow down or block the spread and diffusion of thermal runaway events, also known as mica plates, heat shields, etc. With the improvement of safety requirements for power battery packs, the demand for mica insulating materials is also increasing.

Let you know what mica is

Mica (mica or glimmer) is one of the most widely distributed rock-forming minerals. It is the general name of layered aluminosilicates such as potassium, aluminum, magnesium, iron and lithium. Mica is generally polymorphic, of which monoclinic system is common, followed by cubic system, and the rest is rare. The most common minerals in the mica group are sericite, muscovite, phlogopite, lepidolite, biotite, etc. Mica is usually in the form of pseudohexagonal or rhombic plate-like, flaky and columnar crystals, and the flaky mica has the greatest development and utilization value. The color varies with the change of chemical composition, and darkens with the increase of iron content. Muscovite is colorless, transparent or light; The biotite is black to dark brown, dark green and other colors; The phlogopite is mainly yellow, brown, green or colorless; Lithium mica is light purple, rose red to gray. Glass luster, pearly luster on cleavage surface. Mohs hardness is generally 2~3.5, and specific gravity is 2.7~3.5. The cleavage of parallel bottom is very complete. Muscovite is one of the widely distributed rock-forming minerals, which occurs in all three major rocks. The argillaceous rocks can form sericite during low-grade regional metamorphism, and become muscovite when the degree of metamorphism is slightly higher. In the late stage of acid magma crystallization and pegmatization, a large amount of muscovite was generated. It can also be formed in the process of alteration from high temperature to medium and low temperature. The so-called greisenization is one of the high-temperature alteration processes, which can form a large amount of muscovite. The so-called sericitization is one of the medium-low temperature alteration, which can form a large number of sericite, mainly in sheet structure. The muscovite is weathered and broken into very fine scales, which can not only become debris in the clastic sediments, but also be one of the mineral components of argillaceous rocks.

Is mica heating plate harmful to the body?

Mica heating plate is widely used in electric cookers, microwave ovens, electronic disinfection cabinets, hair dryers, electric irons and other household appliances.

Zhang Jun: Give full play to the function of the ecological police center and keep the bottom line of the ecological environment

In the afternoon of March 11, Zhang Jun, the secretary of the county party committee, came to the ecological police center and some industrial enterprises in the county industrial park to investigate the operation of the ecological police center and the development of enterprises in the park.