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Experimental Study on Extraction of Molybdenum From Low Grade Molybdenum Oxide Ore

Han Xiao-lan

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Abstract

Recovery of molybdenum from molybdenum oxide ore has been studied.The effects of NaOH concentration,temperature,time,ratio of liquid to solid on molybdenum leaching were examined.At the conditions of NaOH mass concentration of 80 g/L,temperature of 95 ℃,liquid to solid ratio of 3∶1,leaching time of 120 min,Mo leaching rate was over 82%.The leaching solution was purified using Na2S solution to remove lead and using HCl solution to adjust pH to 8.0 for removal silicon.Using HCl solution to adjust pH to 2.5,D314 macroporous weakly basic anion exchange resin to adsorpt molybdenum,and 10%NaOH solution at 40 ℃ to desorpt molybdenum,molybdenum adsorption and desorption rate reached 95% and 97%,respectively.

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Recovery of molybdenum from molybdenum oxide ore has been studied.The effects of NaOH concentration,temperature,time,ratio of liquid to solid on molybdenum leaching were examined.At the conditions of NaOH mass concentration of 80 g/L,temperature of 95 ℃,liquid to solid ratio of 3∶1,leaching time of 120 min,Mo leaching rate was over 82%.The leaching solution was purified using Na2S solution to remove lead and using HCl solution to adjust pH to 8.0 for removal silicon.Using HCl solution to adjust pH to 2.5,D314 macroporous weakly basic anion exchange resin to adsorpt molybdenum,and 10%NaOH solution at 40 ℃ to desorpt molybdenum,molybdenum adsorption and desorption rate reached 95% and 97%,respectively.

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Available abstract

Recovery of molybdenum from molybdenum oxide ore has been studied.The effects of NaOH concentration,temperature,time,ratio of liquid to solid on molybdenum leaching were examined.At the conditions of NaOH mass concentration of 80 g/L,temperature of 95 ℃,liquid to solid ratio of 3∶1,leaching time of 120 min,Mo leaching rate was over 82%.The leaching solution was purified using Na2S solution to remove lead and using HCl solution to adjust pH to 8.0 for removal silicon.Using HCl solution to adjust pH to 2.5,D314 macroporous weakly basic anion exchange resin to adsorpt molybdenum,and 10%NaOH solution at 40 ℃ to desorpt molybdenum,molybdenum adsorption and desorption rate reached 95% and 97%,respectively.

Key concepts: Molybdenum, Leaching (pedology), Chemistry, Adsorption, Inorganic chemistry, Oxide, Nuclear chemistry, Organic chemistry

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