Leaching of rare earth metals (REMs) from Korean monazite concentrate
IR@NML: CSIR-National Metallurgical Laboratory, Jamshedpur
View Archive Info| Field | Value | |
| Title |
Leaching of rare earth metals (REMs) from Korean monazite
concentrate
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| Creator |
Panda, Rekha
Kumari, Archana Jha, Manis K Hait, Jhumki Kumar, Vinay Kumar, J Rajesh Lee, Jin-Young |
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| Subject |
Minerals and Mining
Chemical Engineering |
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| Description |
Systematic scientific studies for dephosphorization and acid leaching of Korean monazite are reported here. 50% NaOH (w/v) solubilizes 99.99% phosphate, at 170 8C, 100 g/L pulp density in 4 h. Kinetics of phosphate leaching fitted well with model ‘‘chemical reaction control,’’ i.e. 1 (1 X)1/2 = kct, Ea = 58.04 kJ/mol. Further, rare earth hydroxides (REHs) was leached using 6 N HCl at 90 8C, 60 g/L
pulp density for 2 h to recover 95% REMs. Leach liquor generated can be further processed using solvent extraction/ion exchange techniques. From the pure solutions, metal/salts could be obtained using evaporation, precipitation, etc.
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| Publisher |
Elsevier
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| Date |
2014
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://eprints.nmlindia.org/6902/1/rekha-JIEC-2014.pdf
Panda, Rekha and Kumari, Archana and Jha, Manis K and Hait, Jhumki and Kumar, Vinay and Kumar, J Rajesh and Lee, Jin-Young (2014) Leaching of rare earth metals (REMs) from Korean monazite concentrate. Journal of Industrial and Engineering Chemistry, 20(4) (IF-2.063). pp. 2035-2042. |
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| Relation |
http://dx.doi.org/10.1016/j.jiec.2013.09.028
http://eprints.nmlindia.org/6902/ |
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