| INORGANIC MATERIALS AND CERAMIC MATRIX COMPOSITES |
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| Principle of How Fe/SiO2 Mass Ratio Influences Melt Viscosity of FeO-SiO2-Al2O3 System |
| FU Fangzhong1,2, YE Haohui1,2, HU Jin1,2, YAO Mingcan1,2, LIN Jiahao1,2, XIE Boyi1,2, FAN Helin1,2,*, WANG Ruixiang1,2, XU Zhifeng1,2,3
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1 School of Metallurgical Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi, China
2 Institute of Green Metallurgy and Process Intensification, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi, China
3 Jiangxi College of Applied Technology, Ganzhou 341000, Jiangxi, China |
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Abstract The intensified smelting method can greatly improve the production efficiency and production intensity of the copper smelting process and reduce energy consumption, but also brings about problems of difficulty in separating matte from slag and high copper content of slag. In this work, the structure and viscosity of FeO-SiO2-Al2O3 system melt were obtained by molecular dynamics simulation. The investigation showed that, as the Fe/SiO2 mass ratio increases from 0.8 to 1.8, the bond length of Si-O remains unchanged at 1.61 , the average CNSi-O and CNAl-O remain at about 4, the bond angle of O-Si-O remains basically unchanged, the bond angle of O-Al-O increases from 103.50° to 106.37°;the agglomeration degree of the system decreases, manifesting as a rise of the amount of non-bridging oxygen per tetrahedral-coordinated atom (NBO/T) from 1.68 to 3.72, and the viscosity decreases from 0.48 Pa·s to 0.12 Pa·s.
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Published: 25 November 2025
Online: 2025-11-14
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2025, Vol. 39 
