ChemInform Abstract: CRAIG DISTRIBUTION OF RARE EARTH ELEMENTS IN THE SYSTEM TRIBUTYL PHOSPHATE-NITRIC ACID SYSTEM. 10. PREPARATION OF YTTRIUM OXIDE IN THE PURE STATE

1982 ◽  
Vol 13 (43) ◽  
Author(s):  
K. ROSSMANITH
Keyword(s):  
Rare Earth ◽  
Nitric Acid ◽  
Rare Earth Elements ◽  
Yttrium Oxide ◽  
Pure State ◽  
Tributyl Phosphate ◽  
Acid System

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.

Selective Nitric Acid Leaching of Rare-Earth Elements from Calcium and Phosphate in Fluorapatite Concentrate

JOM ◽  
2019 ◽  
Vol 71 (12) ◽  
pp. 4578-4587 ◽  
Author(s):  
Seyed Ramin Banihashemi ◽  
Bijan Taheri ◽  
Seyed Mohammad Razavian ◽  
Faraz Soltani
Keyword(s):  
Rare Earth ◽  
Nitric Acid ◽  
Rare Earth Elements ◽  
Acid Leaching ◽  
Nitric Acid Leaching

Extraction of rare-earth elements from nitric acid solutions with bis(dioctylphosphinylmethyl)phosphinic acid

2006 ◽  
Vol 48 (1) ◽  
pp. 47-52
Author(s):  
A. N. Turanov ◽  
V. K. Karandashev ◽  
A. N. Yarkevich ◽  
Z. V. Safronova
Keyword(s):  
Rare Earth ◽  
Nitric Acid ◽  
Rare Earth Elements ◽  
Phosphinic Acid ◽  
Acid Solutions ◽  
Nitric Acid Solutions
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