What is mica sheet

Mica sheet is an important component of melange. It is a rock block (sheet) which is confined by the tectonic convergence boundary and has obvious differences in lithology, lithofacies, deformation, metamorphism and age with the matrix and adjacent sheet. Natural mica sheet color retention, water resistance, simulation is very strong, and has excellent batch resistance and cold resistance, heat is not sticky, cold is not brittle, rich color, bright, strong plasticity, is the production of real stone paint, granite paint excellent partner, is the interior wall paint, three-dimensional strong new decorative materials.

Application of mica sheet:

Mica is mainly used in real stone paint, after mixing with real stone paint, spraying and smearing methods to produce a coating of imitation granite pattern, so that the coated material is not stone than stone effect, saving the consumption of natural stone, but also for the construction or decoration of houses to reduce investment costs.

Mica is the general name of mica group minerals, is the aluminum silicate of potassium, aluminum, magnesium, iron, lithium and other metals, are layered structure, monoclinic crystal system. The crystals are pseudohexagonal or platelike, sometimes columnar. The lamellar cleavage is very complete, glassy, and the flakes are elastic. The refractive index of mica increases with the increase of the content of iron, and can be from low to medium protrusion. The variety without iron, colorless in the sheet, the higher the iron content, the darker the color, while the polychromatic and absorbency increased.

Mica ore mainly includes biotite, phlogopite, Muscovite, lepiolite, sericite, green mica, iron lepiolite, etc. Placer gold stone is a mixed mineral of mica and quartz. Muscovite and phlogopite are the most used in industry, and lelithium is an important mineral raw material for extracting lithium.

The mica minerals can be divided into three subgroups according to their chemical composition and optical characteristics, including Muscovite subgroup, biotite-phlogopite subgroup and leucopite subgroup.

Mica deposits were widely found in Asia, Africa, and the Americas, but rarely in Europe, where the value of mica was very high until the 19th century, and prices fell rapidly as colonists mined it in Africa and South America.

Mica block Mica has very high insulation, insulation properties, good chemical stability, with strong acid, alkali and pressure resistance, so it is an important raw material for the manufacture of electrical equipment, so it can also be used as an insulating material in the hair dryer. Mica also has the ability to birefringence, so it is also a material for optical instruments to manufacture polarized light plates. For the mining of mica for the electrical industry, it must be a mica block with an effective area greater than 4 square centimeters, without cracks, perforations, and non-mica minerals on the edge shall not exceed 3 millimeters. After mica mining, the quality is divided into four categories according to the effective area, and the best special area is greater than 65 square centimeters.

In the industry is the most used Muscovite, followed by phlogopite, widely used in building materials industry, fire industry, fire extinguishing agent, welding rod, plastics, electrical insulation, paper, asphalt paper, rubber, pearlescent pigments and other chemical industry