| 摘要 |
The present invention relates to a production method of vanadium oxide using extraction, and belongs to the technical field of vanadium oxide extraction. The technical problem to be solved in the present invention is to provide a clean vanadium oxide production method which can not only obtain high quality vanadium product but also circulate and reuse vanadium extraction wastewater. The inventive method comprises preparing raw material to be roasted, calcifying roasting, leaching, solid-liquid separating, extraction, 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. The invention improves vanadium recovery rate to make it higher than that of available processes, and reduces production cost. By combining with other techniques, the invention also can convert waste resulted from extraction into secondary resource for reuse, so as to realize clean production. |
