PROCESS FOR RECOVERING MOLYBDA, VANADIUM, COBALT AND NICKEL FROM THE ROEST PRODUCTS OF USED CATALYSTS FOR THE DESULFURIZATION OF PETROLEUM

摘要

From roasted products of used catalysts from hydrotreatment desulfurization of petroleum, valuable molybdenum, vanadium, cobalt and nickel are recovered easily and a high percent recovery by means of a combination of simple chemical procedures and also inexpensive chemicals. The recovered metal components can be reused for preparing new catalysts and the like.