company news about high-purity quartz sand industry's structure, purity standard, technological obstacles and application scope (2)

1. Wide range of applications

Semiconductors, photovoltaics, electric light sources, optical communications and other industries and fields are important areas that support the development of strategic emerging industries and are an important force guiding future economic and social development; they are an important guarantee for building major projects, improving people's livelihood, and consolidating national defense and military industries. Quartz products such as quartz tubes, single-crystal quartz crucibles and quartz devices produced from high-purity quartz sand are indispensable and important supporting materials in these fields. They are also the application areas with the highest added value of high-purity quartz products.

Semiconductor field

Whether home appliances, consumer electronic equipment, new energy vehicles, or other electronic high-tech products, there is a huge demand for semiconductor materials, and high-purity quartz sand is one of the important strategic core raw material in the semiconductor integrated circuit industry.

The chip manufacturing link of the integrated circuit industry chain is mainly divided into silicon wafer manufacturing - wafer manufacturing - chip manufacturing. The high-purity quartz materials used in each process mainly include quartz crucibles for pulling single crystal silicon rods in the silicon wafer manufacturing link, and wafer manufacturing. The quartz glass diffuser tube is equipped with the quartz flange, quartz glass furnace tube, quartz boat and other quartz glass equipment for the extremely expanded tube, and the photomask substrate used in photolithography, etching and film deposition in the chip manufacturing process, etc.

Photovoltaic field

High-purity quartz is one of the key raw materials in the photovoltaic field. It is mostly used in quartz products such as diffusion tubes, carriers and arc method crucibles for polycrystalline silicon and monocrystalline silicon photovoltaic production. Monocrystalline silicon and polycrystalline silicon prepared in the photovoltaic industry are both high-purity substances, so the purity requirements for the supporting quartz are very high. According to the standard requirements of GB/T 32649-2016 "Quartz Sand for Photovoltaics", the silica content of quartz sand for photovoltaics It should be greater than or equal to 99.99%, and the total content of impurity elements should be less than or equal to 25μg/g.

Electric light source field

High-purity quartz sand is the main raw material of optical glass. Due to its stable optical properties, high optical uniformity and excellent high temperature resistance, it is widely used in the fields of optical transmission, optical storage, optoelectronic display and special light sources, and is mostly used in the production of UV tubes , high-purity quartz tubes, transparent tube lamps, special optical products for optical instruments or mechanical systems.

Optical communication field

Optical fiber communication plays a vital role in the construction of information highways. Due to its high anti-interference, fast speed and large transmission capacity, optical fiber communication has become an important pillar of modern communications. Quartz optical fiber is widely used due to its mature technology and excellent performance. The light transmission spectrum of quartz optical fiber is determined by the quartz material of the core layer. Therefore, high-purity quartz plays an important role in quartz optical fiber.