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All Journal Jurnal Teknologi Mineral dan Batubara
Erika Arum Dianawati
Pusat Riset Sumber Daya Geologi, Organisasi Riset Kebumian dan Maritim, Badan Riset dan Inovasi Nasional
Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Environmental Science Materials Science & Nanotechnology

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STUDI PERBANDINGAN PROSES PELINDIAN UNTUK EKSTRAKSI SKANDIUM DARI TERAK RESIDU BAUKSIT Sariman; Siti Rochani; Nuryadi Saleh; Isyatun Rodliyah; Erika Arum Dianawati; Retno Wijayanti
Jurnal Teknologi Mineral dan Batubara Vol 19 No 3 (2023): Jurnal Teknologi Mineral dan Batubara Edisi September 2023
Publisher : Balai Besar Pengujian Mineral dan Batubara tekMIRA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30556/jtmb.Vol19.No3.2023.1509

Abstract

Scandium is classified as a rare earth element. Its existences are geochemically in small amounts as associate minerals. Consequently, scandium production is minimally from processing residues of major minerals. Indonesia has large bauxite deposits, and it is processed into alumina, producing bauxite residue as a by-product. The bauxite residue contains rare earth metals, including scandium. In this study, various ways of extracting scandium from bauxite residue slag were carried out. The bauxite residue beneficiation process was done through a smelting reduction process followed by magnetic separation. Scandium extractions were carried out from the bauxite residue slag through a leaching process with concentrated sulfuric, sulfation, alkali fusion, and a 2-stage acid leaching. The best percentage of scandium extracted was obtained at 88.40%, using the 2-stage acid leaching at the acid concentration of 500 g/kg, the temperature of 90oC, and the leaching time at 3 hours for each leaching stage. In addition, the best neodymium extracted achieved  76,97%, using the alkali fusion, fused in NaOH at 700oC for 3 hours.
Co-Authors Isyatun Rodliyah Nuryadi Saleh Retno Wijayanti Sariman SITI ROCHANI