A method for preparing high-purity quartz by flux-assisted calcination-water quenching and high-purity quartz prepared by the method
By using flux-assisted calcination-water quenching, the problems of impurity solidification and low purification efficiency in the preparation of high-purity quartz were solved, and high-purity quartz with SiO2 content greater than 99.99% was achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Filing Date
- 2026-04-28
- Publication Date
- 2026-07-17
AI Technical Summary
In the preparation of high-purity quartz using existing technology, the calcination-water quenching treatment before grinding is prone to side reactions at high temperatures, which can cause impurities to solidify or enter the crystal lattice. Furthermore, the small particle size of quartz makes it difficult to generate sufficient internal stress to burst inclusions, resulting in low purification efficiency.
The flux-assisted calcination-water quenching method is adopted. By adding fluxes such as sodium/potassium salts to lower the phase transformation temperature of quartz, combined with water quenching and rapid cooling, the rapid volume change of quartz is promoted to generate microcracks, exposing internal impurities and improving acid leaching efficiency.
It effectively opens the internal inclusions of quartz, improves the purification efficiency of high-purity quartz, avoids the solidification of impurities, enhances the subsequent acid leaching effect, and obtains high-purity quartz with a SiO2 content greater than 99.99%.
Smart Images
Figure SMS_1 
Figure SMS_2 
Figure SMS_3