Extraction and purification of thorium and rare earth elements from bastnaesite mineral: a comprehensive leaching and precipitation study

被引：3

作者：

Ozkan, Bekir ^{[1
]}

Altas, Yuksel ^{[1
]}

Inan, Suleyman ^{[1
]}

机构：

[1] Ege Univ, Inst Nucl Sci, TR-35100 Bornova Izmir, Turkiye

来源：

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2025年 / 334卷 / 01期

关键词：

Bastnaesite; Thorium; Rare earth elements; Leaching; Precipitation; RECOVERY; LIQUOR; BAKING; LIGHT;

D O I：

10.1007/s10967-024-09724-y

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The present study focuses on investigating the conditions for acid leaching of Th and REEs and sequential oxalate precipitation to remove impurities from leach liquor. The effects of preheat treatment, leaching time, liquid/solid ratio, and acid concentration on Th, Sm, Pr, Nd, Ce, La, and U leaching yields were investigated. The best results were obtained at 400 degrees C preheated sample using 1 mol/L H2SO4, liquid/solid ratio of 1 mL/g, 60 min leaching time, and 30 degrees C leaching temperature. The leaching yields of Th, Sm, Pr, Nd, Ce, La, and U were found to be 41.7, 65.0, 68.2, 66.9, 84.3, 82.6, and 55.0% respectively. Th and REE liquors were treated with 0.5-1.5 mol/L H2C2O4 solutions in the precipitation step. Purity was enhanced through three sequential precipitation cycles, resulting in a purity grade of 98.59%.

引用

页码：541 / 550

页数：10

共 27 条

[1]

Abd El-Mottaleb M., 2016, CHEM ADV MATER, V1, P33

[2] Purification of rare earth elements from monazite sulphuric acid leach liquor and the production of high-purity ceric oxide [J].

Abreu, Renata D. ;

Morais, Carlos A. .

MINERALS ENGINEERING, 2010, 23 (06) :536-540

[3] An experimental design approach for the separation of thorium from rare earth elements [J].

Altas, Y. ;

Tel, H. ;

Inan, S. ;

Sert, S. ;

Cetinkaya, B. ;

Sengul, S. ;

Ozkan, B. .

HYDROMETALLURGY, 2018, 178 :97-105

[4] A suggested alternative procedure for processing of monazite mineral concentrate [J].

Amer, T. E. ;

Abdella, W. M. ;

Wahab, G. M. Abdel ;

El-Sheikh, E. M. .

INTERNATIONAL JOURNAL OF MINERAL PROCESSING, 2013, 125 :106-111

[5] Kinetics of uranium and iron dissolution by sulfuric acid from Abu Zeneima ferruginous siltstone, Southwestern Sinai, Egypt [J].

Atia B.M. ;

Gado M.A. ;

Cheira M.F. .

Euro-Mediterranean Journal for Environmental Integration, 2018, 3 (1)

[6] Recovery of light and heavy rare earth elements from apatite ore using sulphuric acid leaching, solvent extraction and precipitation [J].

Battsengel, Ariuntuya ;

Batnasan, Altansukh ;

Narankhuu, Ariunbolor ;

Haga, Kazutoshi ;

Watanabe, Yasushi ;

Shibayama, Atsushi .

HYDROMETALLURGY, 2018, 179 :100-109

[7] Selective removal of impurities from rare earth sulphuric liquor using different reagents [J].

da Silva, Ruberlan Gomes ;

de Morais, Carlos Antonio ;

Teixeira, Leandro Viana ;

de Oliveira, Eder Domingos .

MINERALS ENGINEERING, 2018, 127 :238-246

[8] Sulfuric acid baking and leaching of rare earth elements, thorium and phosphate from a monazite concentrate: Effect of bake temperature from 200 to 800 °C [J].

Demol, John ;

Ho, Elizabeth ;

Senanayake, Gamini .

HYDROMETALLURGY, 2018, 179 :254-267

[9] Kinetic study of calcination of a rare earth ore [J].

Garcia, Adrian Carrillo ;

Latifi, Mohammad ;

Chaouki, Jamal .

HYDROMETALLURGY, 2021, 200

[10]

Gne H., 2023, B MINER RES EXPLOR, V170, P87

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