TY - CPAPER AU - Laurentiu Valentin Soroaga AU - Cecilia Arsene AU - Romeo Iulian Olariu TI - THE EVALUATION OF NA2O2 AS A SINTERING AGENT IN SOLID STATE DISSOLUTION OF POTENTIAL SECONDARY SOURCES FOR RARE EARTH ELEMENTS T2 - SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 21st SGEM International Multidisciplinary Scientific GeoConference Proceedings 2021, Energy and Clean Technologies PY - 2021 SP - 41 EP - 48 DO - 10.5593/sgem2021v/4.2/s18.08 PB - STEF92 Technology ER -