Effect of the composition on MgO saturability in secondary metallurgical slag

Autor: GU Chao, WANG Min, CAI Xiao-feng, GAN Peng
Jazyk: čínština
Rok vydání: 2018
Předmět:
Zdroj: 工程科学学报, Vol 40, Iss S1, Pp 73-76 (2018)
Druh dokumentu: article
ISSN: 2095-9389
DOI: 10.13374/j.issn2095-9389.2018.s1.011
Popis: A predominantly liquid and MgO saturated slag is preferred in secondary metallurgical processes.It contributes to the mass transfer in molten steel and the extension of the refractory life.In the present study, the saturability of Mg O in quaternary Ca O-Si O2-Al2O3-MgO system in secondary metallurgical slag with low basicity was investigated by commercial thermodynamic software and laboratory experiments.The result shows that in the basicity (Ca O/Si O2) range of 0.5-1.8, the saturability of MgO fluctuates between2%and 39%and decreases with the increase of basicity.The saturability of MgO increases in the MgO saturated phase periclase (MgO) and forsterite (2MgO·Si O2) and decreases in the MgO saturated phase spinel (MgO·Al2O3) with an increase in Al2O3content.Si O2content has a great effect on the saturability of MgO in lime-silicate slag.Besides, the MgO saturability increases with an increase in temperature.
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