In Addition To The Recovery Of Copper, Molybdenum And Molybdenum Residue Of New Technology Research

Recovery copper and molybdenum from low grade molybdenum slag has been studied, and a new NaOH digestion and liquid-liquid extraction process has been developed.In the stage of NaOH digestion, the infleunce of NaOH consumption and temperature on the recovery of Molybdenum has been studied .At 90℃ , and the NaOH comsuption of stiochiometric amount, more than 98% of the Molybdenum can be leached and more than 99% of the copper remained in the residue. In the stage of liquid-liquid extraction,the extraction rate of molybdenum up to 99% can be reached with the extractant N₂35. At the same time, the infleunce of ammonia concentration and strip time on the strip rate has also been studied. With ammonia concentration of 1:2,strip time 20 minutes,a strip rate of 98% has been obtained.It is indicated that the NaOH digestion and liquid-liquid extraction process is feasible, and the recovery of copper and molybdenum are more than 99% and 95.6% respectively. This process will make positive contribution to searching the way for recycling molybdenum from waste material and ensuring the continually development of Chinese molybdenum metallurgical industry.