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Erschienen in:
2016 | OriginalPaper | Buchkapitel
Fundamental Study of the Rare Earths Recycling Through the Pyrotetallurgical Route —Phase Relations and Crystallization Behavior of the CaO-SiO2-Nd2O3 System
verfasst von : Thu Hoai Le, Annelies Malfliet, Bart Blanpain, Muxing Guo
Erschienen in: REWAS 2016
Verlag: Springer International Publishing
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This study aims to investigate phase relations of the CaO-SiO2-Nd2O3 ternary system for high temperature recycling of Neodymium. The slag samples were equilibrated at 1500°C and 1600°C for 24h in Ar, and quenched in water. From the phase analysis of the samples, the isothermal sections were partially constructed and the liquid stability regions were assessed. Based on the identified phase relations, a solidification process with different cooling paths was studied in-situ using a confocal scanning laser microscope within the interesting slag phase regions for recycling. The phases needed for optimizing recycling can be produced accordingly.