Download e-book for iPad: Rare metal technology 2016 by Shafiq Alam, Hojong Kim, Neale R. Neelameggham, Takanari

By Shafiq Alam, Hojong Kim, Neale R. Neelameggham, Takanari Ouchi, Harald Oosterhof

ISBN-10: 1119231078

ISBN-13: 9781119231073

This assortment offers the papers offered within the symposium on extraction of infrequent metals in addition to infrequent extraction processing ideas utilized in steel creation. Paper issues contain the extraction and processing of parts like antimony, arsenic, gold, indium, palladium, platinum, infrequent earth metals together with yttrium and neodymium, titanium, tungsten, and vanadium. The infrequent processing options coated contain direct extraction approach for infrequent earth point restoration; biosorption of necessary metals; fluorination habit of uranium and zirconium mix of gas particles therapy; and restoration of important parts of commodity metals akin to zinc, nickel, and metals from slag.

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A clear increase in extraction ratio is observed when comparing the heavy REEs (here Y at 84% and Dy at 90%) to the lighter REEs (Ce at 45% and Nd at 54%) when leaching with a large excess of acid. This behavior is also observed at the lower acid concentrations, albeit in far smaller amounts (Ce at 11% and Dy at 20%). This could be attributed to the marginally higher solubility of the heavy REEs [13] or could indicate that the heavy REE and light REE are associated with different minerals within the apatite concentrate.

Figure 5: XRD spectrum of the HNO3 residue SEM/EDS Analysis Of The Leach Residues. 3M HCl (Figure 6) and the HNO3 (Figure 7) leaching residues reveal the presence of a substantial amount of monazite. 3M HCl residue using BSE imaging; b: EDS analysis of indicated particle (red arrow) Figure 7: a: SEM image of the HNO3 residue using BSE imaging; b: EDS analysis of indicated particle (red arrow) The monazite particles in both residues appear smooth and shown no sign of partial dissolution. The observable particles have an approximate particle size between 10-50µm, the same size as the observed particles in the material prior to the leach (Figure 2a).

M. Komura, N. Sato, A. Kirishima and O. Tochiyama, “Thermogravimetric Study of the Reaction of Uranium Oxides with Fluorine,” J. , 451, 673(2008). 4. N. SATO, A. KIRISHMA and T. FUKASAWA, “Fluorination Behavior of Uranium and Iron Oxides by Fluorine,” Proc. 5370, French Nuclear Energy Society, (2015). 5. I. E. Schaner, “ A Metallographic and X-ray Study of The UO2-ZrO2 System,” J. Nucl. , 9, 33(1963) 36 Rare Metal Technology 2016 Edited by: Shafiq Alam, Hojong Kim, Neale R. Neelameggham, Takanari Ouchi, and Harald Oosterhof TMS (The Minerals, Metals & Materials Society), 2016 HYDROMETALLURGICAL RECOVERY OF RARE EARTH METALS FROM SPENT FCC CATALYSTS M.

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Rare metal technology 2016 by Shafiq Alam, Hojong Kim, Neale R. Neelameggham, Takanari Ouchi, Harald Oosterhof


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