"Individual Separation of Yttrium and Dysprosium Oxides from the Rare Earths Product obtained from Xenotime Mineral Concentrate" | ||
| Arab Journal of Nuclear Sciences and Applications | ||
| Volume 57, Issue 1, January 2024, Pages 63-74 PDF (549.02 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/ajnsa.2023.249441.1792 | ||
| Author | ||
| Saleh M. El Hady* | ||
| Nuclear Materials Department, Production Sector, Nuclear Materials Authority | ||
| Abstract | ||
| The separation of ytrrium and dysprosium from the rare earths product (48.15% Y2O3, 11.05% Dy2O3) obtained from a xenotime mineral concentrate was investigated. The rare earths chloride liquor is prepared followed by precipitation of yttrium using lactic acid. The optimum conditions of the yttrium precipitation are included 2 M lactic acid concentration, lactic acid pH 5 with L(REEs solution) /L(lactic acid) 1/0.75 at contact time of 168 h at 25 oC. The extraction of dysprosium from Y-free REE chloride solution was investigated using PC88A. The optimum conditions of the dysprosium extraction involved an extractant concentration of 2.2 M, 1/1 an O/A ratio in a chloride solution at pH 3, and 9 min., as contact time. While the optimum conditions of its stripping considered 1.5 M H2SO4 in 1/1 an O/A ratio for 20 min., as stripping time. Ultra pure products of Y and Dy were prepared and analyzed using ICP-MS. | ||
| Keywords | ||
| Yttrium; Dysprosium; Extraction; Lactic Acid; PC88A; Rare earths | ||
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