Abstract
The paperwork presents the research done for finding a solution for vanadium recovery from the used catalyst in H2SO4 manufacturing, by contact method and its re-introduction in the economic circuit During the research made there have been tested and compared more extraction methods. It has been chosen as current method the proceeding that uses water as extraction agent, considering the satisfactory yield of about 60% for extraction, the low degree of impurities with elements from the catalyst support, the easiness and the low price of the proceeding. The research made allow the design of a vanadium recovery technology and the proposal of a technological flow that considering further conclusions may undergo transformations concerning the parameters.