Sinosteel Luoyang Institute of Refractories Research Co.;
Ltd.;
Luoyang 471039;
China;
Beijing Research and Development Center of Puyang Refractories Group Co.;
Ltd.;
Beijing 100039;
China;
magnesia-magnesium; aluminate; spinel-zirconia; subsystem; subsolidus; phase; relationship; microstructure;