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Optimisation of a Pyrometallurgical Niobium and Tantalum Recyling Process with on-line-LIBS

  • Tantalum and niobium are essential for the development of electronics towards a more and more compact design, but without reducing their performance today. Especially in smart phones and tablets, tantalum and niobium capacitors with high charge densities have already become almost indispensable. However, tantalum as a critical raw material is still a problem for the sustainable production of electronics. Due to this fact, the existence of efficient recycling processes especially in Europe is becoming even more important nowadays. The Bundesanstalt für Materialforschung und -prüfung (BAM) is currently working on the optimisation of an existing pyrometallurgical tantalum recycling process. Optimisation of this industrial process is carried out in a small-scale electric arc furnace (480 kVA, capacity approx. 150 kg/h) at BAM using a new and innovative equipment for on-line analysis of high temperature processes. The aim of this project is to identify the best timing for an optimumTantalum and niobium are essential for the development of electronics towards a more and more compact design, but without reducing their performance today. Especially in smart phones and tablets, tantalum and niobium capacitors with high charge densities have already become almost indispensable. However, tantalum as a critical raw material is still a problem for the sustainable production of electronics. Due to this fact, the existence of efficient recycling processes especially in Europe is becoming even more important nowadays. The Bundesanstalt für Materialforschung und -prüfung (BAM) is currently working on the optimisation of an existing pyrometallurgical tantalum recycling process. Optimisation of this industrial process is carried out in a small-scale electric arc furnace (480 kVA, capacity approx. 150 kg/h) at BAM using a new and innovative equipment for on-line analysis of high temperature processes. The aim of this project is to identify the best timing for an optimum slag tapping, when the slag is lower than minimum targeted tantalum concentration. Hence, LIBS (Laser induced breakdown spectroscopy) is used to identify the chemical composition of the slag layer and during slag tapping. The on-line-LIBS prototype of BAM enables an in-situ measurement of the element distribution in the melt after calibration on the slag system. First results of this joint research project will be presented including LIBS-measurements and thermodynamic and kinetic aspects of the process.zeige mehrzeige weniger

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  • Taube et al._EMPRC 2018.pdf
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Metadaten
Autoren/innen:Mareike Carolin Taube, Christian Adam, Burkart Adamczyk, F. Schulenburg, U. Bartmann, T. Beckmann, K. Michalik, M. Reuter, M. Stelter
Dokumenttyp:Beitrag zu einem Tagungsband
Veröffentlichungsform:Verlagsliteratur
Sprache:Englisch
Titel des übergeordneten Werkes (Englisch):Proceedings / EMPRC 2018, European Mineral Processing & Recycling Congress
Jahr der Erstveröffentlichung:2018
Organisationseinheit der BAM:4 Material und Umwelt
4 Material und Umwelt / 4.4 Thermochemische Reststoffbehandlung und Wertstoffrückgewinnung
Herausgeber (Institution):GDMB Gesellschaft der Metallurgen und Bergleute e. V.
Verlag:GDMB Verlag GmbH
Verlagsort:Clausthal-Zellerfeld
Erste Seite:347
Letzte Seite:362
DDC-Klassifikation:Technik, Medizin, angewandte Wissenschaften / Ingenieurwissenschaften / Sanitär- und Kommunaltechnik; Umwelttechnik
Freie Schlagwörter:Laser-induced breakdown spectroscopy; Niobium; On-line analysis; Pyrometallurgy; Tantalum
Themenfelder/Aktivitätsfelder der BAM:Umwelt
Umwelt / Ressourcenrückgewinnung und Materialverwertung
Veranstaltung:European Mineral Processing & Recycling Congress (EMPRC 2018)
Veranstaltungsort:Essen, Germany
Beginndatum der Veranstaltung:25.06.2018
Enddatum der Veranstaltung:26.06.2018
ISBN:978-3-940276-84-1
Verfügbarkeit des Volltexts:Volltext-PDF im Netzwerk der BAM verfügbar ("Closed Access")
Datum der Freischaltung:17.12.2018
Referierte Publikation:Nein