|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Thermodynamic Applications, Optimizations and Simulations in High-Temperature Processes: An EPD Symposium in Honor of Christopher W. Bale's 70th Birthday
||An Experimental and Thermodynamic Investigation of the Iron Saturated FeO-B2O3-Nd2O3 System
|| , Gabriella Tranell, In-Ho Jung
|On-Site Speaker (Planned)
NdFeB magnet containing waste is a possible alternative supply of neodymium that could have a significantly lower impact on the environment than the current mining and extraction processes. Neodymium will rapidly oxidize to Nd2O3 in the presence of oxygen, which makes it attractive to recover neodymium as an oxide. Thermochemical data and phase diagrams for Nd2O3 containing systems are however very limited.
The present work was conducted to determine phase diagrams and thermochemical properties of the iron saturated FeO-B2O3-Nd2O3 system. Key experiments were performed to determine phase diagram data and thermodynamic data.
The Modified Quasichemical Model was used to describe the Gibbs energy of the liquid phase. The model parameters were optimized to reproduce the phase diagram data and to fit the thermochemical properties of both the liquid phase and the compounds.
The optimized database was applied to calculate the oxidation of NdFeB magnet waste for selective extraction process design.
||Planned: TMS Journal: Metallurgical and Materials Transactions