Articles & Issues
- Language
- English
- Conflict of Interest
- In relation to this article, we declare that there is no conflict of interest.
- Publication history
-
Received August 13, 2022
Revised January 16, 2023
Accepted February 3, 2023
- Acknowledgements
- This work was supported by the Inner Mongolia Special Project for Transformation of Scientific and Technological Achievements [2019CG073], Solid Waste Resource National Key Research & Development Project [2020YFC1909105] and Major Science and Technology Project of Inner Mongolia Autonomous Region [2021ZD0016]. Key Project of Scientific and Technological Research in Colleges and Universities of Inner Mongolia Autonomous Region [NJZZ23056], Basic Scientific Research Business Fund Project of Universities Direc
- This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
All issues
Effect of Cr2O3 on the viscosity and structure of slag (or glass) of CaO-MgO-Al2O3-SiO2 system
Abstract
The glass-ceramics of CaO-MgO-Al2O3-SiO2-Cr2O3 system was prepared by melting method using blast
furnace slag, low-carbon ferrochrome alloy slag and quartz sand as raw materials, and the effect of Cr2O3 on the viscosity and structure of slag (or glass) of CaO-MgO-Al2O3-SiO2 (CMAS) system at high temperature was studied. The
Urbain viscosity prediction model was established and optimized, and the effect of Cr2O3 on the structure of slag (or
glass) was studied by Raman spectroscopy. The results show that when the mass fraction of Cr2O3 is in the range of
0.85-2.05%, the viscosity of slag (or glass) of CMAS system decreases with the increase of Cr2O3 content. The average
relative errors between the experimented viscosity value and the calculated viscosity value obtained by using the optimized Urbain model are less than 20%, which is effective and universal for the viscosity prediction of slag (or glass) of
CaO-MgO-Al2O3-SiO2-Cr2O3 system. With the increase of Cr2O3 content, the complex silicon oxygen tetrahedrons
(Q3) disintegrate into a larger number of simple silicon oxygen tetrahedrons (Q0, Q1, Q2), resulting in the sparse structure of the melt network and a decrease in macroscopic viscosity.
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