Modelling and simulation of lanthanum (La) and neodymium (Nd) leaching from monazite ore using METSTM

Yahya, Fatin Nasuha and Wan Ibrahim, W. H. and Abdul Rasid, Ruwaida and Hisyam, Anwaruddin and Mat Suli, Liyana Nadirah (2020) Modelling and simulation of lanthanum (La) and neodymium (Nd) leaching from monazite ore using METSTM. In: IOP Conference Series: Materials Science and Engineering; Energy Security and Chemical Engineering Congress 2019, ESChE 2019 , 17 - 19 July 2019 , Kuala Lumpur, Malaysia. pp. 1-13., 736 (2). ISSN 1757-8981 (Print), 1757-899X (Online)

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Digestion and leaching are known as part of the main processing pre-treatment method in the extraction of rare earth elements (REEs). This work aims to carry out the sensitivity analysis of the liquid–solid (L/S) ratio, the type of acids as well as the number of reactors for the recovery of REEs, namely lanthanum (La) and neodymium (Nd) from monazite concentrate through the leaching process. A model was developed and simulated by using METSIM, a software for modelling metallurgical processes. The process was modelled as a two-step process; the first is the digestion, followed by the leaching process to produce monazite leachate. The results show that the optimum L/S ratio was 8:1 to recover the highest amount of REEs, with HCl was found to perform better as a solvent for the recovery of REEs compared to H2SO4. In addition, the optimum recovery of REEs was achieved by using three reactors, which is in the range of 70-95%.

Item Type: Conference or Workshop Item (Lecture)
Additional Information: Indexed by Scopus
Uncontrolled Keywords: Rare earth elements; Metallurgical processes; lanthanum (La) leaching; Neodymium (Nd) leaching
Subjects: Q Science > QD Chemistry
T Technology > TP Chemical technology
Faculty/Division: Institute of Postgraduate Studies
Faculty of Chemical and Process Engineering Technology
Depositing User: Mrs Norsaini Abdul Samat
Date Deposited: 10 Jan 2023 04:11
Last Modified: 10 Jan 2023 04:11
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