The use of mica schist from Indonesia as raw material for lithium extraction process using sulfate roasting and acid leaching

Authors

DOI:

https://doi.org/10.15587/1729-4061.2021.231071

Keywords:

magnesium oxide, nanoparticles, bittern, ultrasonic destruction, surfactants, anionic, cationic, amphoteric, non-ionic

Abstract

Lithium minerals become a sub-economic raw material for lithium production to fulfill the lithium demand. This study is about lithium extraction from mica schist using the roasting and leaching processes. The mica schist located in Kebumen, Indonesia was used to study the phenomena during the lithium extraction process. Sodium sulfate was used as a roasting agent while 0.36 M sulfuric acid was used as a leaching agent. Solid/liquid ratio (1:5, 1:10, 1:15 and 1:20 (g/mL)) and leaching time (30, 60, 90 and 120 minutes) were used as variables in this study. The roasting process was done at 700 °С for 40 minutes while the leaching process was done at 70 °С and 350 rpm. The ratio of additive and mica schist was 1.5:1 (g/g). XRD, ICP-OES, and SEM were used to observe the formed compounds, chemical composition and morphology of the materials. HighScore Plus (HSP) was used to interpret the content of each compound in mica schist, roasted mica schist, and residue. ICP analysis confirmed that the mica schist contains 45.28 ppm of lithium. It is supported by XRD that lithium exists in mica schist as lepidolite (KLi2AlSi4O10(F,OH)2). Sulfate roasting did not affect the type of lepidolite but the lepidolite reactivity against the chemical agent. SEM analysis shows that the roasting process reduced the average particle size from 32.17 to 27.16 µm. ICP analysis of roasted mica schist shows that lithium concentration was reduced from 45.28 to 1.27 ppm. The optimum result from this study was 97.66 % extraction of lithium while solid/liquid ratio was 1:5 (g/ml) and leaching time was 30 minutes. HSP shows that lepidolite contents in initial mica schist, roasted mica schist and residue were 60.6; 24.3 and 18.7 %, respectively. Lithium concentration in the residue according to ICP analysis is 1.06 ppm.

Author Biographies

Nadia Chrisayu Natasha, Indonesian Institute of Sciences (LIPI)

Master of Engineering, Junior Researcher

Research Center for Metallurgy and Material

Latifa Hanum Lalasari, Indonesian Institute of Sciences (LIPI)

Doctor of Engineering, Senior Researcher

Research Center for Metallurgy and Material

Lia Andriyah, Indonesian Institute of Sciences (LIPI)

Master of Physical and Mathematical Sciences, Junior Researcher

Research Center for Metallurgy and Material

Tri Arini, Indonesian Institute of Sciences (LIPI)

Master of Engineering, Junior Researcher

Research Center for Metallurgy and Material

Fariza Yunita, Indonesian Institute of Sciences (LIPI)

Master of Engineering, Junior Researcher

Research Center for Metallurgy and Material

Didied Haryono, Universitas Sultan Ageng Tirtayasa

Associate Professor

Advance Materials and Tomography Laboratory

Fani Rinanda, Universitas Sultan Ageng Tirtayasa

Bachelor of Engineering, Undergraduate Student

Department of Metallurgy Engineering

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Published

2021-06-18

How to Cite

Natasha, N. C., Lalasari, L. H., Andriyah, L., Arini, T., Yunita, F., Haryono, D., & Rinanda, F. (2021). The use of mica schist from Indonesia as raw material for lithium extraction process using sulfate roasting and acid leaching . Eastern-European Journal of Enterprise Technologies, 3(6 (111), 80–88. https://doi.org/10.15587/1729-4061.2021.231071

Issue

Vol. 3 No. 6 (111) (2021): Technology organic and inorganic substances

Section

Technology organic and inorganic substances

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Copyright (c) 2021 Nadia Chrisayu Natasha, Latifa Hanum Lalasari, Lia Andriyah, Tri Arini, Fariza Yunita, Didied Haryono, Fani Rinanda

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