Vanadium Electrolyte Production Using NH4VO3 Self-Reduction Roasting

The patent substitutes expensive vanadium (V) oxide with cheaper vanadium (IV) oxide and/or vanadium (III) oxide as raw materials. These cheaper vanadium compounds achieve the same electrolyte manufacturing purpose without the high cost burden, directly resolving the contradiction between electrolyte quality and manufacturing cost.

The patent changes the oxidation state parameter of the vanadium compound from +5 (V2O5) to +4 (V2O4) and/or +3 (V2O3). This parameter change in the raw material's chemical state enables cost reduction while maintaining the ability to produce functional vanadium electrolyte.

The patent utilizes the ammonia gas generated during the heating process of ammonium metavanadate as the reducing agent. This self-generated reducing agent eliminates the need for external reducing agents, thereby avoiding the introduction of additional impurities and simplifying the manufacturing process.

The patent uses ammonia gas as an intermediary substance that serves dual purposes: it is a byproduct of heating ammonium metavanadate and simultaneously functions as the reducing agent. This intermediary approach avoids direct addition of external reducing agents that would introduce impurities.

The patent employs the ammonia gas generated from heating ammonium metavanadate as the reducing agent. This self-service approach eliminates the need to purchase and add external reducing agents, thereby reducing manufacturing costs while still achieving complete electrolyte formation.

The patent converts the ammonia gas, which could be considered a byproduct or waste, into a useful reducing agent. This transformation turns a potential waste stream into a valuable functional component, reducing the need for additional chemical additives and associated costs.