RECOVERY OF MOLYBDENUM AND/OR VANADIUM FROM USED CATALYST MATERIAL BY ALKALINE LEACHING, NEUTRALISATION AND ELUTION FROM AN ION EXCHANGE RESIN

摘要

Recovery of molybdenum and vanadium in a substantially pure state, in spent catalysts. It is characterised by a sequence of stages comprising especially leaching of the molybdate and vanadate, adsorption on an ion exchange resin and selective elution to recover the molybdenum and the vanadium separately.