JOURNAL BROWSE
Search
Advanced SearchSearch Tips
Leaching Kinetics of Praseodymium in Sulfuric Acid of Rare Earth Elements (REE) Slag Concentrated by Pyrometallurgy from Magnetite Ore
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
Leaching Kinetics of Praseodymium in Sulfuric Acid of Rare Earth Elements (REE) Slag Concentrated by Pyrometallurgy from Magnetite Ore
Kim, Chul-Joo; Yoon, Ho-Sung; Chung, Kyung Woo; Lee, Jin-Young; Kim, Sung-Don; Shin, Shun Myung; Kim, Hyung-Seop; Cho, Jong-Tae; Kim, Ji-Hye; Lee, Eun-Ji; Lee, Se-Il; Yoo, Seung-Joon;
  PDF(new window)
 Abstract
A leaching kinetics was conducted for the purpose of recovery of praseodymium in sulfuric acid () from REE slag concentrated by the smelting reduction process in an arc furnace as a reactant. The concentration of was fixed at an excess ratio under the condition of slurry density of 1.500 g slag/L, 0.3 mol , and the effect of temperatures was investigated under the condition of 30 to . As a result, praseodymium oxide () existing in the slag was completely converted into praseodymium sulfate () after the leaching of 5 h. On the basis of the shrinking core model with a shape of sphere, the first leaching reaction was determined by chemical reaction mechanism. Generally, the solubility of pure REEs decreases with the increase of leaching temperatures in sulfuric acid, but REE slag was oppositely increased with increasing temperatures. It occurs because the ash layer included in the slag is affected as a resistance against the leaching. By using the Arrhenius expression, the apparent activation energy of the first chemical reaction was determined to be . In the second stage, the leaching rate is determined by the ash layer diffusion mechanism. The apparent activation energy of the second ash layer diffusion was determined to be . These relative low activation energy values were obtained by the existence of unreacted ash layer in the REE slag.
 Keywords
Leaching;REE Slag;Shrinking Core Model;Praseodymium Oxide;Praseodymium Sulfate;Sulfuric Acid;
 Language
English
 Cited by
 References
1.
IUPAC, Nomenclature of Inorganic Chemistry, IUPAC Recommendations 2005("Red book"), RSC Publishing, Cambridge (UK), ISBN: 0-85404-438-8(2005).

2.
Antolini, E. and Perez, J., "The Use of Rare Earth-based Materials in Low-temperature Fuel Cells," Int. J. Hydrog. Energy, 36, 15752-15765(2011). crossref(new window)

3.
Yu, Z. and Chen, M., Rare Earth Elements and Their Applications, Metallurgical Industry Press(1995).

4.
Massari, S. and Ruberti, M., "Rare Earth Elements as Critical Raw Materials: Focus on International Markets and Future Strategies," Resources Policy, 38, 36-43(2013). crossref(new window)

5.
Aarabi-Karasgani, M., Rashchi, F., Mostoufi, N. and Vahidi, E., "Leaching of Vanadium from LD Converter Slag Using Sulfuric Acid," Hydrometallurgy, 102, 14-21(2010). crossref(new window)

6.
Dehghan, R., Noaparast, M. and Kolahdoozan, M., "Leaching and Kinetic Modelling of Low-grade Calcareous Sphalerite in Acidic Ferric Chloride Solution," Hydrometallurgy, 96, 275-282(2009). crossref(new window)

7.
El-Nadi, Y. A., "Lanthanum and Neodymium from Egyptian Monazite: Synergistic Extractive Separation Using Organophosphorus Reagents," Hydrometallurgy, 119-120, 23-29(2012). crossref(new window)

8.
Kim, C.-J., Yoon, H.-S., Chung, K. W., Lee, J.-Y., Kim, S.-D., Shin, S. M., Lee, S.-J., Joe, A.-R., Lee, S.-I., Yoo, S.-J. and Kim, S.-H., "Leaching Kinetics of Lanthanum in Sulfuric Acid from Rare Earth Element (REE) Slag," Hydrometallurgy, 146, 133-137 (2014). crossref(new window)

9.
Kim C.-J., Yoon H,-S,, Chung K.W., Lee J.-Y., Kim S.-D., Shin S. M., Lee S.-J., Joe A.-R., Lee S.-I., Yoo S.-J. and Kim J.-G., "Leaching Kinetics of Neodymium in Sulfuric Acid from E-scrap of NdFeB Permanent Magnet," Korean J. Chem. Eng., 31, 706-711(2014). crossref(new window)

10.
Kostova, I., "Lanthanides as Anticancer Agents," Curr. Med. Chem., 5, 591-602(2005).

11.
Kul, M., Topkaya, Y. and Karakaya, I., "Rare Earth Double Sulfates from Pre-concentrated Bastnasite," Hydrometallurgy, 93, 129-135 (2008). crossref(new window)

12.
Liu, K., Chen, Q., Yin, Z., Hu, H. and Ding, Z., "Kinetics of Leaching of a Chinese Laterite Containing Maghemite and Magnetite in Sulfuric Acid Solutions," Hydrometallurgy, 125-126, 125-136(2012). crossref(new window)

13.
Manhique, A. J., Focke, W. W. and Carvalho, M., "Titania Recovery from Low-grage Titanoferrous Minerals," Hydrometallurgy, 109, 230-236(2011). crossref(new window)

14.
Minting, L., Chang, W., Shuang, Q., Xuejiao, Z., Cunxiong, L. and Zhigan, D., "Kinetics of Vanadium Dissolution from Black Shale in Pressure Acid Leaching," Hydrometallurgy, 104, 193-200(2010). crossref(new window)

15.
Moldoveanu, G. A. and Papangelakis, V. G., "Recovery of Rare Earth Elements Adsorbed on Clay Minerals: I. Desorption Mechanism," Hydrometallurgy, 117-118, 71-78(2012). crossref(new window)

16.
Yoo, S.-J., Yoon, H.-S., Jang, H. D., Lee, M.-J., Lee, S.-I., Park, S.-T. and Hong, H. S., "Dissolution Kinetics of Aluminum Can in Isopropyl Alcohol for Aluminum Isopropoxide," Chem. Eng. J., 133, 79-84(2007). crossref(new window)

17.
Yoo, S.-J., Kwak, D.-H., Lee, J.-W., Hwang, U.-Y. and Jang, H.-D., "Kinetics of Aluminum Can Dissolution in Sec-butyl Alcohol for Aluminum Sec-butoxide," Hydrometallurgy, 96, 223-229(2009). crossref(new window)

18.
Levenspiel, O., Chemical Reaction Engineering, 3rd ed., Wiley, New York(1999).

19.
Schmidt, L.D., The Engineering of Chemical Reactions, 2nd ed., Oxford University Press(2005).

20.
Dickinson, C. F. and Heal, G. R., "Solid-liquid Diffusion Controlled Rate Equations," Thermochim. Acta, 340-341, 89-103(1999). crossref(new window)

21.
Orfao, J. J. M. and Martins, F. G., "Kinetic Analysis of Thermogravimetric Data Obtained Under Linear Temperature Programming-a Method Based on Calculations of the Temperature Integral by Interpolation," Thermochim. Acta, 390, 195-211(2002). crossref(new window)

22.
Akinlua, T. N. and Ajayi, T. R., "Determination of Rare Earth Elements in Niger Delta Crude Oils by Imductively Coupled Plasma-mass Spectrometry," Fuel, 87, 1469-1477(2008). crossref(new window)

23.
Lichtfouse, E. (ed.), Organic Farming, Pest Control and Remediation of Soil Pollutants, Sustainable Agriculture Review 1, Springer Science+Business Media B.V(2009).

24.
Clavier, N., Podor, R. and Dacheux, N., "Crystal Chemistry of the Monazite Structure," J. European Ceram. Soc., 31, 941-976(2011). crossref(new window)

25.
HSC Chemistry 5.0 Chemical Reaction and Equilibrium Software with Extensive Thermochemical Database. Ver 5.11, Outokumpu Research, Finland.