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http://dx.doi.org/10.7844/kirr.2016.25.1.16

Separation of Molybdenum and Tungsten from Sulfuric acid Solution by Solvent Extraction with Alamine 336  

Nguyen, Thi Hong (Department of Advanced Material Science and Engineering, Institute of Rare Metal, Mokpo National University)
Lee, Man Seung (Department of Advanced Material Science and Engineering, Institute of Rare Metal, Mokpo National University)
Publication Information
Resources Recycling / v.25, no.1, 2016 , pp. 16-23 More about this Journal
Abstract
The separation behaviour of Mo and W from sulfuric acid solution by solvent extraction with Alamine 336 was investigated as a function of solution pH and extractant concentration. Selective extraction of Mo over W by Alamine 336 was obtained in the pH range of 3-5 with low amine concentration. The mixture of Alamine 336 and acidic extractants improved the separation factor between Mo and W and was in the following order: D2EPHA > PC88A > Decanol > Versatic acid. The stripping efficiency of Mo and W from the loaded mixture of Alamine 336 and D2EHPA was very poor, while complete stripping of Mo and W was possible from the mixture of Alamine 336 and Decanol by using a mixture of $NH_4OH$ and $NH_4Cl$.
Keywords
Molybdenum; Tungsten; Separation; Solvent extraction;
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