Enrichment on Bangka tin slag’s tantalum and niobium oxide contents through non-fluoride process

Authors

  • Sulaksana Permana Universitas Indonesia Depok, Jawa Barat, Indonesia, 16424, Indonesia
  • Shiva Frida Vincia Universitas Indonesia Depok, Jawa Barat, Indonesia, 16424, Indonesia
  • Anggita Amilia Universitas Indonesia Depok, Jawa Barat, Indonesia, 16424, Indonesia
  • Ahmad Maksum Politeknik Negeri Jakarta Kukusan, Beji, Depok, Indonesia, 16425, Indonesia
  • Kurnia Setiawan Widana National Nuclear Energy Agency of Indonesia Pasar Jum’at, Jakarta, Indonesia, 12440, Indonesia
  • Johny Wahyuadi Soedarsono Universitas Indonesia Depok, Jawa Barat, Indonesia, 16424, Indonesia

DOI:

https://doi.org/10.15587/1729-4061.2018.129914

Keywords:

leaching, tantalum niobium oxide (TNO), Bangka tin slag, NaOH, HClO4

Abstract

This research explored how non-fluoride solutions including 8M NaOH, 0.8, 1.6 and 2.4 M H2SO4, and 0.1, 0.4 and 0.8 M HClO4 increased the contents of tantalum and niobium oxide through leaching. Before leaching, Bangka tin slag (BTS) was characterized through XRF. The slag was then 900⁰C-roasted, quenched, and dewatered. Next, BTS underwent a sieving process with size classifications of +100, -100+150, -150+200, -200+250, and -250 mesh. After that, the -200+250 mesh slag was leached with 8M NaOH. Then, the leached product was divided into two, one of which was 0.1, 0.4, and 0.8 M HClO4-leached and the rest of which was leached with 0.8 M HClO4 followed by 0, 0.8, 1.6, and 2.4 M H2SO4 at 25⁰C within 2 hours. All the residues characterization used an XRF while that of filtrates used an AAS as well as an ICP-OES. The motives that drive this investigation are the deficit of tantalum supply and its status as one of the technology-critical elements. In addition to that, most of prior investigations enhanced the contents of tantalum and niobium oxide using fluoride acid while this study ventured non-fluoride solutions. The result shows that perchlorate acid followed by sulfuric acid leaching slightly enriches the tantalum and niobium contents. However, this method is the most effective among NaOH, HCIO4, and HCIO4 followed by H2SO4 leaching. This finding is a form of scientific effort to maintain the tantalum supply through utilizing worthless waste of tin smelting

Supporting Agency

  • directorate of research and community engagement Universitas Indonesia

Author Biographies

Sulaksana Permana, Universitas Indonesia Depok, Jawa Barat, Indonesia, 16424

Doctor of Engineering in Metallurgy and Materials

Centre of Mineral Processing and Corrosion Research

Department of Metallurgy and Materials

Shiva Frida Vincia, Universitas Indonesia Depok, Jawa Barat, Indonesia, 16424

Bachelor of Engineering in Metallurgy and Materials

Centre of Mineral Processing and Corrosion Research

Department of Metallurgy and Materials

Anggita Amilia, Universitas Indonesia Depok, Jawa Barat, Indonesia, 16424

Bachelor of Engineering in Metallurgy and Materials

Centre of Mineral Processing and Corrosion Research

Department of Metallurgy and Materials

Ahmad Maksum, Politeknik Negeri Jakarta Kukusan, Beji, Depok, Indonesia, 16425

Master of Engineering in Metallurgy and Materials

Department of Mechanical Engineering

Kurnia Setiawan Widana, National Nuclear Energy Agency of Indonesia Pasar Jum’at, Jakarta, Indonesia, 12440

Master of Engineering in Chemical Engineering

Center for Nuclear Minerals Technology

Johny Wahyuadi Soedarsono, Universitas Indonesia Depok, Jawa Barat, Indonesia, 16424

Doctor of Engineering, Professor

Centre of Mineral Processing and Corrosion Research

Department of Metallurgy and Materials

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Published

2018-10-26

How to Cite

Permana, S., Vincia, S. F., Amilia, A., Maksum, A., Widana, K. S., & Soedarsono, J. W. (2018). Enrichment on Bangka tin slag’s tantalum and niobium oxide contents through non-fluoride process. Eastern-European Journal of Enterprise Technologies, 5(12 (95), 56–64. https://doi.org/10.15587/1729-4061.2018.129914

Issue

Vol. 5 No. 12 (95) (2018): Materials Science

Section

Materials Science

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