INFLUENCE OF DIFFERENT COMPONENTS ON VISCOSITIES OF CaO-MgO-Al2O3-SiO2 MELTS

  • Guo-Hua Zhang University of Science and Technology Beijing
  • Kuo-Chih Chou University of Science and Technology Beijing
  • Xian-Yu Lv Steel Plant of Baoshan Iron & Steel Co., Ltd

Abstract


The present study is aimed to distinguish the different influences of CaO and MgO, as well as Al2O3 and SiO2 on viscosity of CaO-MgO-Al2O3-SiO2 melts. It is found that for melt without Al2O3, viscosity increases monotonously as gradually replacing CaO by MgO or decreases as replacing MgO by CaO. The existence of Al2O3 leads to a complex variation of viscosity. In different composition ranges, viscosity may exhibit different variation tendencies as changing the relative contents of CaO and MgO while keeping contents of other components constant. It is also found that when replacing SiO2 by equivalent mole of Al2O3, (i) in CaO-Al2O3-SiO2 system, viscosity increases when Al2O3 content is small relative to CaO content (there is enough Ca2+ ions to charge compensate Al3+ ions), but decreases when CaO content is inadequate for charge compensation; (ii) in MgO-Al2O3-SiO2 system, viscosity always decreases as substituting Al2O3 for SiO2. The reason for this difference for two systems may be resulted from the weak charge compensation ability of Mg2+ ion for Al3+ ion relative to Ca2+ ion. All the viscosity variations can be interpreted well by our new proposed viscosity model.

Author Biography

Guo-Hua Zhang, University of Science and Technology Beijing
Department of Physical Chemistry of Metallurgy, School of Metallurgical and Ecological Engineering, Xue-Yuan Road #30, Haidian District, Beijing 100083, China 
Published
2014/12/17
How to Cite
Zhang, G.-H., Chou, K.-C., & Lv, X.-Y. (2014). INFLUENCE OF DIFFERENT COMPONENTS ON VISCOSITIES OF CaO-MgO-Al2O3-SiO2 MELTS. Journal of Mining and Metallurgy, Section B: Metallurgy, 50(2), 157. Retrieved from https://aseestant.ceon.rs/index.php/jmm/article/view/4332
Issue
Vol. 50 No. 2 (2014)
Section
Original Scientific Paper

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