Study of the possibility of molybdenum recovery from sulfate solutions on the anionite Lewatit MP62W5
DOI:
https://doi.org/10.31643/2020/6445.16Keywords:
black shale ore, molybdenum, solution, sorption, desorption.Abstract
This article presents the results of a study of sorption extraction of molybdenum from sulfate solutions obtained by leaching black-shale ores of Big Karatau. For the extraction of molybdenum was used the method of ion exchange weakly basic anion exchange resin Lewatit MP62W5. The study determined the optimal conditions for the sorption and desorption processes of molybdenum, which included factors such as pH, the duration of the process and the concentration of the necessary reagents. To study the optimal parameters of sorption extraction of molybdenum, the same anion-exchange resin Lewatit MP62W5 was used at a concentration of 0.073 g/l of molybdenum in initial solutions. Application of this anionite for 48 hours during the sorption process and increasing the pH to 5.5 leads to sorption of more than 88 % of the molybdenum from the solution. A solution of ammonium sulfate was used for desorption of molybdenum from saturated resins. It was found that the optimal duration of the molybdenum desorption process is 4 hours at a concentration of (NH4)2SO4 150 g/l. The degree of desorption in this case was 93-94 %
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