Leaching of rare earth metals (REMs) from Korean monazite concentrate

Rekha Panda; Archana Kumari; Manis Kumar Jha; Jhumki Hait; Vinay Kumar; J. Rajesh Kumar; Jin Young Lee

Journal of Industrial and Engineering Chemistry, Vol.20, No.4, 2035-2042, July, 2014

DOI10.1016/j.jiec.2013.09.028 Export Citation

Leaching of rare earth metals (REMs) from Korean monazite concentrate

Rekha Panda, Archana Kumari, Manis Kumar Jha^†, Jhumki Hait, Vinay Kumar, J. Rajesh Kumar¹, and Jin Young Lee^{1, †}

Metal Extraction and Forming Division, CSIR-National Metallurgical Laboratory, Jamshedpur 831007, India
¹Mineral Resources Research Division, Korea Institute of Geoscience and Mineral Resources, Daejeon 305-350, South Korea

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Systematic scientific studies for dephosphorization and acid leaching of Korean monazite are reported here. 50% NaOH (w/v) solubilizes 99.99% phosphate, at 170 ℃, 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) = kt, Ea = 58.04 kJ/mol. Further, rare earth hydroxides (REHs) was leached using 6 N HCl at 90 ℃, 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.

Keywords:Korean monazite;Leaching;Phosphate;Rare earth hydroxides (REHs);HCl

[References]

Kim E, Osseo-Asare K, Hydrometallurgy, 113-114, 67 (2012)
Kim W, Bae I, Chae S, Shin H, J. Alloy. Compd., 486, 610 (2009)
Rare Element Resources Ltd. . News Releases, September 07, 2011.
http://www.reuters.com/article/2009/08/31/us-mining-toyota-idUS-TRE57U02B20090831
http://www.lighting.philips.com/pwc_li/us_en/lightcommunity/trends/phos-phor/assets/Philips_REO_Brochure_P-6281.pdf
Gupta CK, Krishnamurthy N, Extractive Metallurgy of Rare Earths, CRC, Press, Florida, 2005, , http://dx.doi.org/10.1201/9780203413029.fmattPrint ISBN: 978-0-415-33340-5; eBook ISBN: 978-0-203-41302-9
Qun Z, Gan-feng T, Cun-zhi R, Shi-rong Z, J. Rare Earths, 19(4), 284 (2001)
Peng-fei X, Yan-xin Z, Gan-feng T, Jing G, Transaction of Nonferrous Metals Society of China, 20, 2392 (2010)
Kim J, Yoon H, Kim S, Kim C, Lee J, J. Korean Institute of Resources Recycling, 13(4), 11 (2004)
Yanhui X, Haijiao L, Zhijun M, Jianguo C, Wenyi Z, Liangcai L, J. Rare Earths, 30(2), 155 (2012)
Shuchen S, Zhiying W, Xue B, Bo G, Wenyuan W, Ganfeng T, J. Rare Earths, 25(6), 779 (2007)
Wenyuan W, Xue B, Zhiying W, Shuchen S, Ganfeng T, Transactions of Nonferrous Metals Society of China, 17(4), 864 (2007)
Abdel-Rehim AM, Hydrometallurgy, 67, 9 (2002)
Rabie KA, Sayed SA, Lasheen TA, Salama IE, Hydrometallurgy, 86, 121 (2007)
Chi R, Zhu G, Zhou Z, Xu Z, Metall. Mater. Trans. B-Proc. Metall. Mater. Proc. Sci., 31B, 191 (2000)
Kim S, Lee J, Kim C, Yoon H, Kim J, J. Korean Institute of Resources Recycling, 19(6), 70 (2010)
Murthy TKS, Gupta CK, Rare earth resources, their extraction and purification, in: Subbarao EC, Wallace WE (Eds.), Science and Technology of Rare Earth Materials, Academic Press Inc. (London) Ltd., 1980.
Jha MK, Kumar V, Maharaj L, Singh RJ, Ind. Eng. Chem. Res., 43(5), 1284 (2004)
Liu X, Byrne RH, Geochim. Cosmochim. Acta, 61, 1625 (1997)
Firsching FH, Brune SN, J. Chem. Eng. Data, 36(1), 93 (1991)

[Referenced By]

[1] Kim E, Osseo-Asare K, Hydrometallurgy, 113-114, 67 (2012)

[2] Kim W, Bae I, Chae S, Shin H, J. Alloy. Compd., 486, 610 (2009)

[3] Rare Element Resources Ltd. . News Releases, September 07, 2011.

[4] http://www.reuters.com/article/2009/08/31/us-mining-toyota-idUS-TRE57U02B20090831

[5] http://www.lighting.philips.com/pwc_li/us_en/lightcommunity/trends/phos-phor/assets/Philips_REO_Brochure_P-6281.pdf

[6] Gupta CK, Krishnamurthy N, Extractive Metallurgy of Rare Earths, CRC, Press, Florida, 2005, , http://dx.doi.org/10.1201/9780203413029.fmattPrint ISBN: 978-0-415-33340-5; eBook ISBN: 978-0-203-41302-9

[7] Qun Z, Gan-feng T, Cun-zhi R, Shi-rong Z, J. Rare Earths, 19(4), 284 (2001)

[8] Peng-fei X, Yan-xin Z, Gan-feng T, Jing G, Transaction of Nonferrous Metals Society of China, 20, 2392 (2010)

[9] Kim J, Yoon H, Kim S, Kim C, Lee J, J. Korean Institute of Resources Recycling, 13(4), 11 (2004)

[10] Yanhui X, Haijiao L, Zhijun M, Jianguo C, Wenyi Z, Liangcai L, J. Rare Earths, 30(2), 155 (2012)

[11] Shuchen S, Zhiying W, Xue B, Bo G, Wenyuan W, Ganfeng T, J. Rare Earths, 25(6), 779 (2007)

[12] Wenyuan W, Xue B, Zhiying W, Shuchen S, Ganfeng T, Transactions of Nonferrous Metals Society of China, 17(4), 864 (2007)

[13] Abdel-Rehim AM, Hydrometallurgy, 67, 9 (2002)

[14] Rabie KA, Sayed SA, Lasheen TA, Salama IE, Hydrometallurgy, 86, 121 (2007)

[15] Chi R, Zhu G, Zhou Z, Xu Z, Metall. Mater. Trans. B-Proc. Metall. Mater. Proc. Sci., 31B, 191 (2000)

[16] Kim S, Lee J, Kim C, Yoon H, Kim J, J. Korean Institute of Resources Recycling, 19(6), 70 (2010)

[17] Murthy TKS, Gupta CK, Rare earth resources, their extraction and purification, in: Subbarao EC, Wallace WE (Eds.), Science and Technology of Rare Earth Materials, Academic Press Inc. (London) Ltd., 1980.

[18] Jha MK, Kumar V, Maharaj L, Singh RJ, Ind. Eng. Chem. Res., 43(5), 1284 (2004)

[19] Liu X, Byrne RH, Geochim. Cosmochim. Acta, 61, 1625 (1997)

[20] Firsching FH, Brune SN, J. Chem. Eng. Data, 36(1), 93 (1991)