Wertstoffgewinnung aus Kraftwerksaschen Teil I: Charakterisierung von Braunkohlenkraftwerksaschen zur Gewinnung strategischer Metalle

作者: Beate Brett , Daniel Schrader , Konstantin Räuchle , Gerhard Heide , Martin Bertau

DOI: 10.1002/CITE.201500052

关键词:

摘要: Braunkohlenaschen aus Kraftwerken weisen als sekundare Rohstoffquellen ein bisher weitgehend ungenutztes Potenzial auf. Die Gewinnung von Wertmetallen Aschen setzt deren Charakterisierung voraus, auf der eine zielgerichtete Strategie zur Metallextraktion aufbaut. An Filteraschen und Stabilisat den Boxberg Schwarze Pumpe des Lausitzer Reviers wurden Wege aufgezeigt, wie ausgehend Charakterisierungsdaten Korngrosenverteilung, Element- mineralogischen Zusammensetzung sowie dem Verhaltnis Netzwerkbildner zu Netzwerkwandler durch gezielte Vorbehandlung deutliche Steigerung Metallmobilisierung Laugung mit Salzsaure erhalten werden konnte. The unexploited potential of ashes, especially from lignite combustion in power plants, for the strategic recovery secondary resources requires a sufficient, substantial and reliable analysis. Thus, information facilitates pathways to dedicated metal extractions optimized strategies. Based on two fly ashes stabilized form, delivered Lusatia, characterization, concerning particle size distribution, elemental mineralogical composition ratio network former modifier, led significant increase mobilization metals by leaching educts with hydrochloric acid.

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