Thermodynamic Activity of B2O3 in CaO–SiO2–Al2O3–B2O3–MnO–MgO Molten Slags at 1723 K. - Chen, Jian-bin; Che, Hao-jie; Zhao, Ming-hui; Pan, Wen-bo; Chen, Zhi-yu; Liu, Hai-dong (Metallurgical & Materials Transactions. Part B, 2023)