To extract and prepare vanadium pentoxide from vanadium-containing raw materials, traditional methods mostly adopt two processes: roasting-leaching and direct acid leaching to obtain vanadium-containing solution, and then achieve the preparation of vanadium pentoxide through chemical precipitation, solvent extraction, or ion exchange. This wet vanadium extraction process has a series of defects such as unstable operation, long production cycle, and serious water pollution. On the other hand, in terms of production, the wet vanadium extraction process has a relatively low production capacity and produces products with more non-metallic impurities.

The process for preparing high-purity vanadium pentoxide, centered around dry chlorination, primarily involves the following steps: chlorination of vanadium-containing raw materials, separation and purification of vanadyl trichloride, and preparation of high-purity vanadium pentoxide. The use of chlorination to prepare high-purity vanadyl trichloride and vanadium pentoxide offers significant advantages in terms of purification and impurity removal principles, effectively meeting the high purity requirements of emerging industries. Additionally, the chlorination process for vanadium extraction boasts extremely high extraction efficiency and vanadium recovery rates. Furthermore, the entire process is characterized by its short flow, continuous production that is easily scalable, low production costs and energy consumption, high product quality, and minimal waste pollution. Therefore, Huicheng adopts a process centered around dry chlorination for the preparation of high-purity vanadyl trichloride and vanadium pentoxide.