RECOVERY OF SOME RARE EARTH ELEMENTS FROM LEACH LIQUOR OF THE SAGHAND URANIUM ORE USING COMBINED PRECIPITATION AND CATION EXCHANGE METHODS

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KHANCHI A.R.; RAFATI HONAYF; REZVANIANZADEH M.R.

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Journal: JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY Year:2008 | Volume:- | Issue:2 (44) Page(s): 1-8

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Title

RECOVERY OF SOME RARE EARTH ELEMENTS FROM LEACH LIQUOR OF THE SAGHAND URANIUM ORE USING COMBINED PRECIPITATION AND CATION EXCHANGE METHODS

Author(s)

KHANCHI A.R. | RAFATI HONAYF | REZVANIANZADEH M.R. | Issue Writer Certificate

Keywords

RARE EARTHSQ3

URANIUM ORESQ3

PRECIPITATIONQ2

ION EXCHANGE CHROMATOGRAPHYQ3

ION EXCHANGE RESINSQ3

SAGHANDQ3

Abstract

In this research work, the recovery and separation of La (III), Ce(III), Sm(III), Dy(III) and Nd(III) from SAGHAND uranium ore have been studied by PRECIPITATION and ion-exchange chromatography methods using Dowex 50W-X8 cation exchanger. At first, some preliminary and preconcentration experiments such as combination, sieve analysis, gravity table and electrostatic in preconcentration of lanthanides were performed. Then, acidic digesting and leaching procedure were used. The results of experiments showed that rare earth elements, along with interfering ions such as Al (III), Fe (III), Mg (II) and Mn(II) present in the leach liquor solution. The investigation of separation process by PRECIPITATION method revealed that PRECIPITATION and then fast separation using centrifugal technique had the best results in the elimination of interference elements. In order to separate the lanthanides and to obtain their elution curves, the chromatographic column containing Dowex 50W-X8 resin was employed. For efficient separation of lanthanides from interference elements the hydrochloric acid with concentration of two and six molar was used respectively. Recovery of lanthanides from the leach liquor solution was achieved more than 85%.

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APA: Copy

KHANCHI, A.R., RAFATI, HONAYF, & REZVANIANZADEH, M.R.. (2008). RECOVERY OF SOME RARE EARTH ELEMENTS FROM LEACH LIQUOR OF THE SAGHAND URANIUM ORE USING COMBINED PRECIPITATION AND CATION EXCHANGE METHODS. JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY, -(2 (44)), 1-8. SID. https://sid.ir/paper/97545/en

Vancouver: Copy

KHANCHI A.R., RAFATI HONAYF, REZVANIANZADEH M.R.. RECOVERY OF SOME RARE EARTH ELEMENTS FROM LEACH LIQUOR OF THE SAGHAND URANIUM ORE USING COMBINED PRECIPITATION AND CATION EXCHANGE METHODS. JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY[Internet]. 2008;-(2 (44)):1-8. Available from: https://sid.ir/paper/97545/en

IEEE: Copy

A.R. KHANCHI, HONAYF RAFATI, and M.R. REZVANIANZADEH, “RECOVERY OF SOME RARE EARTH ELEMENTS FROM LEACH LIQUOR OF THE SAGHAND URANIUM ORE USING COMBINED PRECIPITATION AND CATION EXCHANGE METHODS,” JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY, vol. -, no. 2 (44), pp. 1–8, 2008, [Online]. Available: https://sid.ir/paper/97545/en

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