Ultra-high purity quartz sand is also the main raw material of quartz glass. Quartz glass is called "glass mesh" because it has a series of excellent physical and chemical properties, such as temperature resistance as high as 1100-1200 ℃, which is 800 ℃ higher than ordinary glass; it is a transparent refractory material; its thermal expansion coefficient is small, only It is 5.5×10 -7/℃, equivalent to 1/20 of ordinary glass, theoretically it can reach zero expansion; it has light transmittance, ultraviolet, visible light, infrared, etc. can be transmitted well; it has good electrical insulation, The resistivity is 1018 Ω/cm at 20 ℃, the dielectric strength is 250 kV/cm, and the vacuum degree can reach 10-6 Pa. It has good chemical stability and is insoluble in any acid except hydrofluoric acid. Quartz glass is a brittle material, with good compressive strength but lower tensile strength. Quartz glass is not resistant to hydrofluoric acid. Under high temperature conditions (above 1 000 ℃), it will transform into cristobalite. These are its two shortcomings. .

The main products of quartz glass include: high-purity high-temperature resistant quartz glass tubes for large-scale integrated circuits, arc quartz crucibles (solar grade and semiconductor grade), quartz glass for optical communications, and quartz glass for electric light sources. The varieties and uses of quartz glass are closely related. Users can manufacture different quartz glass according to the characteristics and requirements of quartz glass.

With the depletion of high-quality crystal resources, solving the problem of insufficient self-sufficiency of quartz sand in my country is mainly focused on the improvement of professional technology such as geological prospecting, technological mineralogy and mineral processing. First, it is necessary to look for ore with relatively pure crystals, homogeneous replacement of similar substances and less gas-liquid inclusions. Second, it is necessary to comprehensively adopt modern advanced physical and chemical beneficiation and purification technologies and equipment to develop efficient and stable high-purity quartz beneficiation and purification technologies. High-purity quartz raw material sand has become a strategic product of the national economy.

Efforts to seek the progress of China's high-purity quartz sand ore purification technology and industrial development, to realize the self-sufficiency of secondary (high-purity and ultra-high-purity) quartz sand is urgently needed for the development of China's quartz glass industry, and is important for the development of China's related high-tech industries have important meaning.

The above is the future development trend of ultra-high-purity quartz sand briefly described by the editor. You can simply understand it. The content is for reference only, please contact us if you need consultation.