High purity quartz sand is used to produce photovoltaic crucible, quartz tube rod, quartz boat groove, etc. the downstream is photovoltaic, semiconductor and optical industries. It is characterized by high requirements for SiO2 purity, and metal ions such as iron, titanium, chromium, zirconium, lithium, potassium and sodium and inclusion hydroxyl groups are hardly allowed. The largest downstream of quartz material itself is semiconductor, followed by optical communication and photovoltaic. At present, photovoltaic is the core growth elasticity.

In the past, high-purity quartz sand was mainly processed and purified by crystal, but considering the scarcity and high price of crystal, since the last century, the world, including China, began to use quartz ore to prepare high-purity quartz sand and realize comprehensive industrial production. In terms of technology, the whole purification process can be summarized into three processes: pretreatment, physical treatment and chemical treatment. Specifically, various beneficiation methods such as crushing, grinding, screening, magnetic separation, pickling, chlorination roasting and so on are adopted. However, considering the differences in technical level and process, there are great differences in product quality among different enterprises. There are few enterprises that can eliminate impurities and stably produce 4N grade quartz sand, and there are only three leading enterprises in the world.

The high requirement of raw material ore is another barrier. Generally, it is high-grade vein quartz ore. Global raw material mines are distributed in 7 countries including the United States, Norway, Australia, Russia, Mauritania, China and Canada, but some mining conditions are not yet mature. In the past years, the company has gradually become a global leader in the supply of raw materials based on its high-grade mining resources in the United States. At present, some mines in other countries have better mining / application markets. In the medium term, 1. In recent years, countries have increased their exploration efforts, which is expected to break the monopoly pattern of American minerals in the field of raw materials in the future.

2. China also has gangue quartz resources, which are concentrated in Hubei, Anhui, Xinjiang and other areas. In the medium term, it is expected to form raw material substitution under technological upgrading