Explanation
It refers to materials made from natural silicate mineral. Silicate is the most abundant mineral in the Earth's crust, with a wide distribution and easy collection. It accounts for 60% of the total amount of rock forming oxides, equivalent to O2. The oxides combined with SO2 mainly include Al2O3, Mgo, FeO, K2O, and TiO2, which together account for over 98% of the crustal composition. The natural minerals with silicate as the main component have been used as materials for a long time due to their wide distribution and easy collection. In the Stone Age, it was directly used to make tools. In prehistoric times, it was used as raw material to make pottery. Later, it was used to make glass, porcelain, cement and other silicate materials. With the development of metallurgy and chemical industry, traditional silicate materials are expanded to refractory and acid resistant materials. At present, ceramics, cement, glass and refractory are the four major categories of traditional silicate materials. When using silicate as raw materials to process and manufacture various products, their processing and production need to be fired at high temperature. Therefore, the manufacturing of traditional silicate materials is also called kiln industry. In addition, in the development process of silicate materials, in addition to natural silica, feldspar and clay with silicate as the main component, oxides without silicon oxide (SiO2) and graphite with carbon as the main component are also used. Various products are also made according to the same process. Although its composition is not silicate, it is usually attributed to traditional silicate materials because of the same preparation method. traditional silicate materials account for the majority of inorganic nonmetallic materials and have been widely used in various fields of the national economy.
Classification
Fundamental of Material Science -> 总论