Phase equilibrium studies of CaO-SiO2-MgO-Al2O3 system with binary basicity of 1.5 related to blast furnace slag

Kou, Mingyin, Wu, Shengli, Ma, Xiaodong, Wang, Laixin, Chen, Mao, Cai, Qingwu and Zhao, Baojun (2016) Phase equilibrium studies of CaO-SiO2-MgO-Al2O3 system with binary basicity of 1.5 related to blast furnace slag. Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science, 47 2: 1093-1102. doi:10.1007/s11663-016-0584-2


Author Kou, Mingyin
Wu, Shengli
Ma, Xiaodong
Wang, Laixin
Chen, Mao
Cai, Qingwu
Zhao, Baojun
Title Phase equilibrium studies of CaO-SiO2-MgO-Al2O3 system with binary basicity of 1.5 related to blast furnace slag
Formatted title
Phase equilibrium studies of CaO-SiO2-MgO-Al2O3 system with binary basicity of 1.5 related to blast furnace slag
Journal name Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science   Check publisher's open access policy
ISSN 1073-5615
1543-1916
Publication date 2016-04
Sub-type Article (original research)
DOI 10.1007/s11663-016-0584-2
Open Access Status Not Open Access
Volume 47
Issue 2
Start page 1093
End page 1102
Total pages 10
Place of publication New York, United States
Publisher Springer
Collection year 2017
Language eng
Formatted abstract
Slags play an important role in blast furnace operation, and their compositions are based on the CaO-SiO2-MgO-Al2O3 quaternary system in many steel companies. The binary basicity (CaO/SiO2 weight ratio) of blast furnace slags, especially primary slag and bosh slag, can be as high as 1.5 or higher. Phase equilibria and liquidus temperatures in the CaO-SiO2-MgO-Al2O3 system with binary basicity of 1.50 are experimentally determined for temperatures in the range 1723 K to 1823 K (1450 °C to 1550 °C). High temperature equilibration, quenching, and electron probe X-ray microanalysis techniques have been used in the present study. The isotherms are obtained in the primary phase fields of Ca2SiO4, melilite, spinel, periclase, and merwinite related to blast furnace slags. Effects of Al2O3, MgO, and binary basicity on liquidus temperatures have been discussed. In addition, extensive solid solutions have been measured for different primary phases and will be used for development and optimization of the thermodynamic database.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
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