Industrial Use of Phlogopite
Apr. 09, 2021
Phlogopite, one of the muscovite minerals, is an aluminosilicate containing iron, magnesium and potassium. If the iron in the phlogopite composition is not too much, it can be used as an electrical insulating material, so it has an important role.
Phlogopite is characterized by the complete cleavage of mica, yellow-brown color and golden reflection. It differs from muscovite in that it can be decomposed in boiling sulfuric acid and produce a milky solution at the same time, while muscovite cannot. Muscovite is the most used industrially, followed by phlogopite. It is different from biotite in that the color is relatively light.
Phlogopite can be corroded by concentrated sulfuric acid and can be decomposed in concentrated sulfuric acid to produce a milky solution. The chemical components that replace potassium are sodium, calcium, and barium; those that replace magnesium are titanium, F iron, manganese, chromium, Fluorine replaces OH, and the variants of phlogopite include manganese mica, titanium mica, chromium phlogopite, fluorophlogopite and so on. Phlogopite is mainly produced in the contact metamorphic zone of ultrabasic rocks such as kimberlite and dolomitic marble. Impure magnesia limestone can also be formed during the process of regional metamorphism. Phlogopite is different from muscovite in physical and chemical properties, so it has many special functions and is used in many important fields.
The most used in industry is Muscovite, followed by phlogopite. It is widely used in building materials industry, fire protection industry, fire extinguishing agent, welding rod, plastic, electrical insulation, papermaking, asphalt paper, rubber, pearlescent pigment and other chemical industries.
Superfine Mica Powder is used as a functional filler for plastics, coatings, paints, rubbers, etc., which can improve its mechanical strength, enhance toughness, adhesion, aging resistance, and corrosion resistance. In addition to extremely high electrical insulation, resistance to acid and alkali corrosion, elasticity, toughness and sliding properties, heat and sound insulation, thermal expansion coefficient and other properties, it is also the first to introduce the second surface of the sheet with smooth surface, large diameter-to-thickness ratio, regular shape, and adhesion. Strong and other characteristics. In industry, it is mainly used for its insulation and heat resistance, as well as its resistance to acid, alkali, pressure and stripping, and is used as an insulating material for electrical equipment and electrical equipment; secondly, it is used to manufacture steam boilers and furnaces for smelting furnaces. Windows and mechanical parts.