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MM: Fachverband Metall- und Materialphysik
MM 17: Poster Ib
MM 17.14: Poster
Montag, 18. März 2024, 18:30–20:30, Poster F
Raman Spectroscopy and Photoluminescence Studies on Recyclate-based MgO-C Composites — •Julia Richter1, Cameliu Himcinschi1, Mahnaz Mehdizadehlima2, Serhii Yaroshevskyi3, Till Manon Jannis Stadtmüller3, and Jens Kortus1 — 1Institute of Theoretical Physics, TU Bergakademie Freiberg, Leipziger Straße 23, D-09599 Freiberg, Germany — 2Institute of Materials Science, TU Bergakademie Freiberg, Gustav-Zeuner-Straße 5, D-09599 Freiberg, Germany — 3Institute of Ceramics, Refractories and Composites, TU Bergakademie Freiberg, Agricolastraße 17, D-09599 Freiberg, Germany
Re-usage, recycling and upcycling of MgO-C refractories are crucial for resource efficiency. Antioxidants used as additives as well as metal and slag residuals reduce the quality of the recycled raw material. Environmentally friendly binders, e.g. lignin-collagen systems, are supposed to replace commonly used binders, such as pitch and resin, in order to save resources and to lower CO2 emissions as well as harmful effects on the environment. In this work, Raman and photoluminescence (PL) spectroscopy as sensitive, non-destructive, non-contact methods are applied to detect impurities and to characterize the carbon structures, in particular carbon cluster size, depending on the binder system in the refractory material.
On the other hand, MgO-C recyclate-based anode materials for application in the extraction of aluminum by fused-salt electrolysis are investigated by Raman and PL and their spectra compared with those of pure materials.
Keywords: Refractory; Recycling; Raman spectroscopy; Photoluminescence; Composite