1996
DOI: 10.1016/0304-386x(95)00051-h
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The recovery of rare earth oxides from a phosphoric acid by-product. Part 1: Leaching of rare earth values and recovery of a mixed rare earth oxide by solvent extraction

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Cited by 123 publications
(41 citation statements)
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“…The results indicate that the extraction efficiency % of Dy, Gd, and Yb increases after the second successive step which becomes 92.7, 54.7, and 42.5% respectively, while in the third extraction process, the extraction efficiency was increased slightly due to the effect of saturation as well as the capacity of solvent [26]. It is more efficient to perform a two extraction step regime with half volume of solvent rather than total volume.…”
Section: Effect Of Organic/aqueous Ratiomentioning
confidence: 79%
“…The results indicate that the extraction efficiency % of Dy, Gd, and Yb increases after the second successive step which becomes 92.7, 54.7, and 42.5% respectively, while in the third extraction process, the extraction efficiency was increased slightly due to the effect of saturation as well as the capacity of solvent [26]. It is more efficient to perform a two extraction step regime with half volume of solvent rather than total volume.…”
Section: Effect Of Organic/aqueous Ratiomentioning
confidence: 79%
“…Phosphate ores are often naturally enriched in REEs, which report significantly to the process residues and can be recovered with acidic leaching (e.g., Preston et al [33]). Example figures for REE content are given by Binnemans et al [34].…”
Section: Ore Processing Residuesmentioning
confidence: 99%
“…UC + 3NO-+ 3L org <=> Ln(N0 3 ) 3^ [25] donde L representa al agente de extracción (31). Con estos dos agentes de extracción, se obtienen preferentemente los elementos intermedios de esta serie, especialmente el samario y el europio.…”
Section: +unclassified
“…Una nueva mezcla de reactivos empleada para la extracción de las tierras raras es la formada por reactivos tipo quelato (HR) y agentes de extracción neutros (L) (41 [31] para las condiciones de dimerización del agente de extracción ácido.…”
Section: C3unclassified