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Rare earth elements leaching from Chadormalu apatite concentrate: Laboratory studies and regression predictions
Mining Engineering Department, Science and Research Branch Islamic Azad University, Iran.
Mining Engineering Department, Science and Research Branch Islamic Azad University, Iran.
Mining Engineering Department, Science and Research Branch Islamic Azad University, Iran.ORCID iD: 0000-0002-2265-6321
2011 (English)In: Korean Journal of Chemical Engineering, ISSN 0256-1115, Vol. 28, no 2, p. 557-562Article in journal (Refereed) Published
Abstract [en]

The extraction of rare earth elements from apatite concentrate of Chadormalu plant of Iran was studied with the dissolution of ore in nitric acid. The parameters of acidity: 60%, solid to liquid ratio: 30%, leaching time: 30 minute, agitation rate: 200 rpm, temperature: 60 °C and particle size (d80): 50 microns were determined as the optimum operational conditions. The recoveries of lanthanum, cerium, neodymium and yttrium were achieved at 74, 59, 72 and 73%, respectively, in the optimized conditions. Multivariable regression was used to predict La, Ce, Nd, Y and total REEs (Y+Nd+Ce+La) leaching recoveries, using experimental data from laboratory studies. It was achieved quite satisfactory correlations of 0.93, 0.98, 0.99, 0.97 and 0.99 for the prediction of Y, Nd, Ce, La and total REEs recoveries, respectively. It was shown that the proposed equations accurately reproduce the effects of operational variables on the different REEs recoveries, and can be used to optimize the REEs leaching plant.

Place, publisher, year, edition, pages
Springer, 2011. Vol. 28, no 2, p. 557-562
Keywords [en]
Leaching, Apatite, Rare Earth Elements, Regression
National Category
Mineral and Mine Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-72289DOI: 10.1007/s11814-010-0383-4ISI: 000287217100037Scopus ID: 2-s2.0-79551689014OAI: oai:DiVA.org:ltu-72289DiVA, id: diva2:1272058
Available from: 2018-12-18 Created: 2018-12-18 Last updated: 2019-02-25

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Chelgani, Saeed Chehreh

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CiteExportLink to record
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