PRODUCTION METHOD OF VANADIUM OXIDE USING ION-EXCHANGE TO REALIZE WASTEWATER CIRCULATION

摘要

Provided is a production method of vanadium oxide using ion-exchange to realize wastewater circulation, which belongs to the technical field of vanadium oxide extraction, and can not only obtain high quality vanadium product but also circulate and reuse vanadium extraction wastewater. The method comprises preparing raw material to be roasted, calcifying roasting, leaching, solid-liquid separating, ion-exchanging, vanadium precipitating, and removing ammonia by calcination or reducing to prepare vanadium oxide; where vanadium extraction wastewater is returned to the system for circulation and reuse after neutralization treatment with lime milk, and no wastewater discharge is realized. Vanadium recovery rate is improved, and production cost is reduced. By combining with other techniques, the method can also convert waste resulted from extraction into secondary resource for reuse, so as to realize clean production.