Journal article
Intensified solvent extraction and separation of cobalt from Ni-rich leaching solution in impinging stream-rotating packed bed contactor
J Chang, F Jia, KA Mumford, X Yang, Z Xie
Geosystem Engineering | TAYLOR & FRANCIS LTD | Published : 2020
Abstract
This work describes the separation of Ni and Co from a real feed solution in chloride media with high Ni content. The extractant used was P507 (2-ethylhexyl phosphoric acid-2-ethylhexyl ester) in a laboratory scale Impinging Stream–Rotating Packed Bed (IS-RPB) contactor. Key variables including feed solution pH, extractant concentration, saponification degree, high gravity level and total volumetric flow rate of fluids amongst other variables were examined. A McCabe–Thiele diagram of the extraction stage predicted that at a total volumetric flow rate of 90 L/h, feed solution pH of 5, saponified P507 concentration of 25% and high gravity of 83, almost 99% of cobalt, would be extracted within ..
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Awarded by National Natural Science Foundation of China
Funding Acknowledgements
This work was supported by the National Natural Science Foundation of China [grant number 51804220], [grant number 51864042]; Scientific Elitists Supporting Project of Department of Education of Guizhou Province [grant number KY[2017] 090]; The Joint Fund Project of Science and Technology Department of Guizhou Province [grant number LH[2017] 7312]; the Project of Tongren Science and Technology Bureau [grant number [2016]18-3]; the Research Fund for the Doctoral Program of Tongren University [grant number trxyDH1620]; Provincial Key Disciplines of Chemical Engineering and Technology in Guizhou Province [grant number ZDXK[2017] 8]; and CSC scholarship [grant number 201708525070].