Study of aluminosilicate waste-based materials

Abstract

Valuable technical properties of mica have attracted attention of people for a long time. Mica is widely used in various industries, including electrical, radio, paint and varnish production. Two types of mica - muscovite and phlogopite – are applied in modern production. Mica belongs to a large group of minerals characterized by perfect cleavage, i.e. the ability to split into very thin sheets having smooth surfaces. Muscovite and phlogopite are the most important industrial micas. They are easily split into thin sheets. In addition, they have high hardness and mechanical strength. They are thermally and chemically stable, non-hygroscopic, flexible, elastic and transparent. Due to these properties, muscovite and phlogopite are the most important composite materials used for producing electrical insulating materials. Along with these varieties, vermiculite, lepidolite and biotite are used in various industries. Mica has properties that other dielectrics lack (high electrical strength, heat resistance, chemical resistance, moisture resistance, mechanical strength, and flexibility). Muscovite and phlogopite are electrical insulating materials. The mining and processing industries produce a lot of mica waste. Methods for using muscovite and phlogopite waste in combination with aluminosilicate waste and a number of low-melting chemical additives were developed.