Is there a patent for purifying silica by quartz sand?

A production process for preparing high-purity silicon dioxide from quartz sand. I have seen this article before. You can go to China Powder Science and Technology Network to search the title of this article. Then you can find more information. Please forgive me for not answering well in academic research.

Patent name: production process for preparing high-purity silica from quartz sand.

Patent holder: Jiangsu Zelong Yingshi Co., Ltd.

Industry: Non-metallic mineral processing

Abstract: By improving the traditional process, optimizing the process formula, integrating the process structure and making full use of the waste heat of the equipment, an environmentally friendly new process is put forward, which greatly reduces the production energy consumption, saves the production cost and improves the production efficiency while ensuring the high purity of silica.