Lithium was extracted from lithium-poor clay ores after short calcination by oxalic acid leaching

IF 4.1 2区材料科学 Q2 ENGINEERING, CHEMICAL

Particuology Pub Date : 2025-02-20 DOI:10.1016/j.partic.2025.01.019

Fengyuan Wang , Yuchun Yang , Min Yang, Yanling Tian, Hong Yuan

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Abstract

Limited research is available on lithium extraction technology for clay-type lithium deposits with relatively low lithium content. In this study, we investigated the effects of lithium extraction from lithium-poor clay ores using oxalic acid. The ore was first calcined and then fully mixed with solid oxalic acid powder, followed by water leaching. Raw material analysis revealed that the primary lithium-containing mineral was cookeite, with a lithium oxide content of 0.57%. The X-ray diffraction (XRD) patterns of the mineral phase before and after calcination at different temperatures revealed that the structure of the ores calcined at 300 and 400 °C was similar to that of the original ore. However, in the XRD patterns of the ore calcined at 500 °C, certain characteristic peaks of cookeite weakened or disappeared. Upon calcination at 600 °C, the hydroxyl group of cookeite was removed, amorphous phase of cookeite appeared, and maximum leaching yield was attained. Using response surface methodology optimization, the optimal calcination temperature and time; acid-to-ore and water-to-ore ratios; and reaction temperature and time were 600 °C and 2 min; 1:1 and 4 mL/g; and 95 °C and 6 h, respectively. The leaching yield under these optimal conditions was 92.33%. The results of this study revealed that lithium ions could be effectively extracted from mines using oxalic acid.

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来源期刊

Particuology 工程技术-材料科学：综合

CiteScore

6.70

自引率

2.90%

发文量

1730

审稿时长

32 days

期刊介绍： The word ‘particuology’ was coined to parallel the discipline for the science and technology of particles. Particuology is an interdisciplinary journal that publishes frontier research articles and critical reviews on the discovery, formulation and engineering of particulate materials, processes and systems. It especially welcomes contributions utilising advanced theoretical, modelling and measurement methods to enable the discovery and creation of new particulate materials, and the manufacturing of functional particulate-based products, such as sensors. Papers are handled by Thematic Editors who oversee contributions from specific subject fields. These fields are classified into: Particle Synthesis and Modification; Particle Characterization and Measurement; Granular Systems and Bulk Solids Technology; Fluidization and Particle-Fluid Systems; Aerosols; and Applications of Particle Technology. Key topics concerning the creation and processing of particulates include: -Modelling and simulation of particle formation, collective behaviour of particles and systems for particle production over a broad spectrum of length scales -Mining of experimental data for particle synthesis and surface properties to facilitate the creation of new materials and processes -Particle design and preparation including controlled response and sensing functionalities in formation, delivery systems and biological systems, etc. -Experimental and computational methods for visualization and analysis of particulate system. These topics are broadly relevant to the production of materials, pharmaceuticals and food, and to the conversion of energy resources to fuels and protection of the environment.