Selective Precipitation of Yttrium From Monazite Acid Leach Liquor by Using Carbonates Precipitation Method.
El-Awady, M., Abd-Elfatah, A., Abd-Elwahab, S., Mahmoud, A., Helaly, O. (2019). Selective Precipitation of Yttrium From Monazite Acid Leach Liquor by Using Carbonates Precipitation Method.. EKB Journal Management System, 108(1), 30-39. doi: 10.21608/tims.2019.190142
M. E El-Awady; A. I. L. Abd-Elfatah; S. M. Abd-Elwahab; A. H. Mahmoud; O. S. Helaly. "Selective Precipitation of Yttrium From Monazite Acid Leach Liquor by Using Carbonates Precipitation Method.". EKB Journal Management System, 108, 1, 2019, 30-39. doi: 10.21608/tims.2019.190142
El-Awady, M., Abd-Elfatah, A., Abd-Elwahab, S., Mahmoud, A., Helaly, O. (2019). 'Selective Precipitation of Yttrium From Monazite Acid Leach Liquor by Using Carbonates Precipitation Method.', EKB Journal Management System, 108(1), pp. 30-39. doi: 10.21608/tims.2019.190142
El-Awady, M., Abd-Elfatah, A., Abd-Elwahab, S., Mahmoud, A., Helaly, O. Selective Precipitation of Yttrium From Monazite Acid Leach Liquor by Using Carbonates Precipitation Method.. EKB Journal Management System, 2019; 108(1): 30-39. doi: 10.21608/tims.2019.190142

Selective Precipitation of Yttrium From Monazite Acid Leach Liquor by Using Carbonates Precipitation Method.

The Bulletin Tabbin Institute for Metallurgical Studies (TIMS)
Volume 108, Issue 1, January 2019, Page 30-39  XML PDF (161.43 K)
Document Type: Original research papers
DOI: 10.21608/tims.2019.190142
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Authors
M. E El-Awady1; A. I. L. Abd-Elfatah1; S. M. Abd-Elwahab2; A. H. Mahmoud1; O. S. Helaly* 1
1Nuclear Materials Authority, P. O. Box: 530 El Maadi, Cairo, Egypt
2Faculty of Science, Ain-Shams University, Cairo, Egypt
Abstract
Rare earth elements (REE) solubility with carbonate salts vary greatly from element to element. The heavy rare earth elements (HRE) being more soluble than the light rare earth elements. Their solubility is a function of the carbonate concentration and the kind of carbonate as sodium, potassium and ammonium. In this work, it is explored the ability of the carbonate for the precipitation of the REE and an easy separation of yttrium was achieved using sodium carbonate to form complex yttrium carbonate followed by oxalic acid precipitation. Form this work REEs concentrate containing (%)
1.8 Y2O3, 1.6 Gd2O3, 23.4 CeO2, 7.6 Nd2O3, 11.4 La2O3, 2.3 Sm2O3, 0.8 Eu2O3 and 3.1 Pr6O11, where the mentioned concentrate was produced after the acid treatment of monazite mineral followed by dissolution with ice water. The produced solution was precipitated with sodium carbonate followed by dissolution in hydrochloric acid and precipitation using oxalic acid to produce yttrium concentrate containing 54.86% Y2O3, 15.53% CeO2, 15.29% La2O3 and 6.90% Nd2O3.
Keywords
Monazite mineral; Yttrium; Homogeneous precipitation; Elemental rare-earths separation
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