TY - JOUR
T1 - Sulfide capacity and phase equilibria of MnO-TiO2-MnS system at 1723 K
AU - Kim, Tae Gyu
AU - Lee, Woo Kyung
AU - Park, Joo Hyun
AU - Min, Dong Joon
AU - Song, Hyo Seok
PY - 2001
Y1 - 2001
N2 - The sulfide capacity and the activity of MnO in the MnO-TiO2 system were measured at 1723 K. Also, the phase equilibria of the MnO-TiO2-MnS system were estimated by measuring the solubility of MnS in the melts. The thermodynamic behavior of MnO and TiO2 in the MnO-TiO2 system exhibits a negative deviation from ideality at 1723 K. The sulfide capacity increases and the activity coefficient of MnS decreases with increasing MnO content in the MnO-TiO2 system. The solubility of MnS in the MnO-TiO2 system increases with increasing MnO content up to about 50 mol%, followed by nearly constant value of about 80 mass% MnS. The solubility of MnS equilibrated with MnO is in good correspondence with the value obtained from the phase diagram of the MnO-MnS binary system. Compared with the phase diagram of the MnO-SiO2-MnS system, a homogeneous liquid region in the MnO-TiO2-MnS system is found to be wider at the same temperature. The activity of MnS increases with increasing MnS content at a fixed MnO/TiO2 ratio in the MnO-TiO2-MnS system. Also, the activity slightly decreases with increasing TiO2 content at a fixed MnS/MnO ratio, whilst MnS activity rapidly decreases by increasing the content of MnO at a constant TiO2/MnS ratio.
AB - The sulfide capacity and the activity of MnO in the MnO-TiO2 system were measured at 1723 K. Also, the phase equilibria of the MnO-TiO2-MnS system were estimated by measuring the solubility of MnS in the melts. The thermodynamic behavior of MnO and TiO2 in the MnO-TiO2 system exhibits a negative deviation from ideality at 1723 K. The sulfide capacity increases and the activity coefficient of MnS decreases with increasing MnO content in the MnO-TiO2 system. The solubility of MnS in the MnO-TiO2 system increases with increasing MnO content up to about 50 mol%, followed by nearly constant value of about 80 mass% MnS. The solubility of MnS equilibrated with MnO is in good correspondence with the value obtained from the phase diagram of the MnO-MnS binary system. Compared with the phase diagram of the MnO-SiO2-MnS system, a homogeneous liquid region in the MnO-TiO2-MnS system is found to be wider at the same temperature. The activity of MnS increases with increasing MnS content at a fixed MnO/TiO2 ratio in the MnO-TiO2-MnS system. Also, the activity slightly decreases with increasing TiO2 content at a fixed MnS/MnO ratio, whilst MnS activity rapidly decreases by increasing the content of MnO at a constant TiO2/MnS ratio.
UR - http://www.scopus.com/inward/record.url?scp=0035698784&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0035698784&partnerID=8YFLogxK
U2 - 10.2355/isijinternational.41.1460
DO - 10.2355/isijinternational.41.1460
M3 - Article
AN - SCOPUS:0035698784
VL - 41
SP - 1460
EP - 1464
JO - Transactions of the Iron and Steel Institute of Japan
JF - Transactions of the Iron and Steel Institute of Japan
SN - 0915-1559
IS - 12
ER -