Radionuclide Removal from Ore and REE-Bearing Mineral by Leaching and Ion Exchange Separation

Reynier, Nicolas; Whitty-Léveillé, Laurence; Laviolette, Cheryl; Courchesne, Maxime; Fiset, Jean-François; Zinck, Janice

doi:10.1007/978-3-319-95022-8_237

Cited by 2 publications

(1 citation statement)

References 24 publications

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“…An additional cycle of biosorption may be applied to purify the mixed REEs precipitate in the secondary impurity removal process. Alternatively, various techniques such as solvent extraction using Cyanex 272 and Cyanex 572 [44,45], D2EHPA and TBP [46], or HEHEHP and HDEHP [44,47]; ion exchange using different cationic or anionic resins such as Dowex 50X8 [44,48,49]; or precipitation using CaCO 3 and Ca(OH) 2 [50,51] or MgO and NaOH [51] can be explored for further purification of the mixed REE precipitate obtained in this study (Figure 9). These techniques have been utilized for impurity removal from REE-containing solutions, and their applicability in refining the mixed REE precipitate can be investigated.…”

Section: The Flowsheet For Recovery Of Rees From Apatite Concentratementioning

confidence: 99%

Preliminary Flowsheet Development for Mixed Rare Earth Elements Production from Apatite Leaching Aqueous Solution Using Biosorption and Precipitation

Amirshahi

Jorjani²

2023

Minerals

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A flowsheet was developed to extract mixed Rare Earth Elements (REEs) from an aqueous solution generated by nitric acid leaching of apatite concentrate. In this study, Platanus orientalis (P. orientalis) leaf powder was employed in the biosorption process to purify the pregnant leach solution. The sorption and desorption processes were investigated and optimized. The results demonstrated the successful extraction of REEs from the pregnant leach solution using the biosorbent. Hydrochloric acid effectively desorbed REEs from the loaded P. orientalis leaf powder. Thermodynamic studies indicated that REEs’ sorption on P. orientalis leaf powder was an endothermic and spontaneous process. Precipitation and calcination steps yielded mixed rare earth oxides (REOs) with an assay of approximately 87%. The final product, mixed REOs, can be further refined through releaching and a secondary impurity removal stage prior to entering the individual REE separation process. Alternatively, it can be fed directly into the solvent extraction process or alternative technologies to obtain individual heavy and light REEs.

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Section: The Flowsheet For Recovery Of Rees From Apatite Concentratementioning

confidence: 99%

Preliminary Flowsheet Development for Mixed Rare Earth Elements Production from Apatite Leaching Aqueous Solution Using Biosorption and Precipitation

Amirshahi

Jorjani²

2023

Minerals

View full text Add to dashboard Cite

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Thorium ion exchange separation from rare earth elements ore samples following a combined attrition and dissolution procedure

Reynier

Courchesne

Basque

et al. 2022

Minerals Engineering

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Radionuclide Removal from Ore and REE-Bearing Mineral by Leaching and Ion Exchange Separation

Cited by 2 publications

References 24 publications

Preliminary Flowsheet Development for Mixed Rare Earth Elements Production from Apatite Leaching Aqueous Solution Using Biosorption and Precipitation

Preliminary Flowsheet Development for Mixed Rare Earth Elements Production from Apatite Leaching Aqueous Solution Using Biosorption and Precipitation

Thorium ion exchange separation from rare earth elements ore samples following a combined attrition and dissolution procedure

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