Preparation of complexes of sulfoxides of petroleum origin and tributyl phosphate with chlorides of rare-earth elements

1977 ◽  
Vol 26 (12) ◽  
pp. 2581-2582
Author(s):  
Yu. I. Murinov ◽  
Yu. B. Monakov ◽  
Z. G. Shamaeva ◽  
N. G. Marina ◽  
V. S. Kolosnitsyn ◽  
...  
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Tributyl Phosphate ◽  
Petroleum Origin

scholarly journals Optimal Monazite Concentration Processes for the Extraction of Uranium and Thorium Fuel Material

Energies ◽  
2020 ◽  
Vol 13 (18) ◽  
pp. 4601
Author(s):  
Olga Fedorova ◽  
Elizaveta Vershinina ◽  
Svetlana Krasitskaya ◽  
Ivan Tananaev ◽  
Boris Myasoedov ◽  
...  
Keyword(s):  
Rare Earth ◽  
Nitric Acid ◽  
Rare Earth Elements ◽  
Tributyl Phosphate ◽  
Solid Phase ◽  
Optimal Conditions ◽  
Acid Dissolution ◽  
Fuel Material ◽  
Monazite Concentrate

The optimal conditions for the nitric acid dissolution of precipitates of hydroxides and hydrated oxides of rare-earth elements, uranium, and thorium obtained after autoclave alkaline opening of samples of monazite concentrate have been determined. The distribution of radioactive impurities between the solid phase and the solution in the processes of alkaline opening, dephosphorization, and acid dissolution of the pulp was studied. Two options are proposed for the extraction of uranium and thorium in the presence of rare earth elements, followed by separation of the components using tributyl phosphate of various contents in the carbon diluent.

Extraction of Rare Earth Elements from Iraqi Phosphate Ore by Using of Tributyl Phosphate

2020 ◽  
Vol 38 (2A) ◽  
pp. 240-245
Author(s):  
Muna K. Abbass ◽  
Moayyed G. Jalhoom ◽  
Aya M. Kadhim
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Tributyl Phosphate ◽  
Contact Time ◽  
Ore Deposits ◽  
Phase Ratio ◽  
Phosphate Fertilizers ◽  
Phosphate Ore ◽  
Extraction Stage ◽  
Valuable Content

Iraqi phosphate ore deposits have been ascertained to be the second global reserve after Morocco, it has been utilized successfully at Al-Qaim phosphate fertilizers complex in the period 1983-2009. The deposit has valuable content of rare piles of earth and uranium, which is expected to have a good impact on the Iraqi economy if they are recovered from the ore. In the present study, solvent extraction was employed for the extraction of the rare earth elements (REEs), tributyl phosphate (TBP) in kerosene was utilized for extracting ytterbium, yttrium, erbium, and lanthanum from an aqueous solution made via the nitric acid (HNO3) leaching of the concentrate of the Iraqi apatite ore. In the extraction stage, the effect of the concentration of TBP (1, 2, 3, and 3.5) M, contact time (1, 3,5,7,9, and 11) min, and the phase ratio (organic/aqueous) (1/4, 1/3, 1/2, 1/1, 2/1, 3/1, 4/1) were studied. The outcomes manifested, that around 92.9%, 98%, 90.4%, and 98.3% of yttrium, ytterbium, erbium, and lanthanum, respectively were extracted at the best extraction conditions of 3M TBP , 4/1 organic to aqueous phase ratio and 7 min contact time.  

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