Preparation of glass-ceramics using high contents of red mud and fly ash

Chen, C. Y.; Zhang, M.; Li, J. Q.; Quan, Bian Li

doi:10.1179/1432891714z.0000000001246

Cited by 2 publications

(1 citation statement)

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“…From the perspectives of maximum consumption of solid waste and reduced raw material cost, adding another solid waste can achieve the purpose of the regulation, which is the ideal method at present [18][19][20][21][22][23]. In this paper, the steel slag produced by steel mills is selected as the control material, and the influence of different steel slag additions on the red mud glass-ceramics system is discussed by molecular dynamics calculation and simulation method.…”

Section: Introductionmentioning

confidence: 99%

Molecular Dynamics Simulation and Viscosity Analysis of Red Mud–Steel Slag Glass–Ceramics

Tan,

Sun,

et al. 2023

Materials

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The preparation of glass–ceramics with red mud and steel slag can not only solve the pollution problem caused by industrial waste slag but also produce economic benefits. It is difficult to analyze the high-temperature melt with the existing test methods, so the simulation experiment with molecular dynamics calculation becomes an important research method. The effects of steel slag content on the microstructure of red mud glass–ceramics were studied by molecular dynamics method. The results show that the binding ability of Si-O, Al-O, and Fe-O decreases with the increase in steel slag content. The number of Si-O-Si bridge oxygen increased gradually, while the number of Al-O-Al, Al-O-Fe, and Fe-O-Fe bridge oxygen decreased significantly. The number of tetrahedrons [SiO4] increased, the number of tetrahedrons [FeO4] and [AlO4] decreased, and the total number of three tetrahedrons decreased. The mean square displacement value of Si4+ and O2− increases first and then decreases, resulting in the viscosity of the system decreasing first and then increasing. The molecular dynamics method is used to analyze the structure of red mud–steel slag glass–ceramics on the microscopic scale, which can better understand the role of steel slag and has guiding significance for the experiment of this kind of glass–ceramics.

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