Preparation of glass-ceramics from chromite-containing tailings solidified with Red Mud

Li, Bin; Chen, Caizhu; Zhang, Yu-Wei; Yuan, Le; Deng, Hong; Wen-min, Qian

doi:10.1016/j.surfin.2021.101210

Cited by 10 publications

(2 citation statements)

References 22 publications

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“…Liu et al made microcrystalline glass with a homogeneous pore distribution from a mixture of red mud, lead and zinc tailings, and silica sand, and its thermal conductivity, mechanical properties, and chemical stability were greatly affected by the sintering temperature, and the comprehensive properties of the microcrystalline glass obtained by sintering it at 970 °C gave it the potential to be a thermal insulation material [ 10 ]. In recent years, glass ceramics, cellular ceramics, and foam ceramics prepared with red mud have also been developed [ 11 , 12 , 13 , 14 , 15 ]. However, the limited application scope of these materials is not enough to use all of the red mud.…”

Section: Introductionmentioning

confidence: 99%

Wettability and Mechanical Properties of Red Mud–Al2O3 Composites

Chen,

Li,

Jiang

2024

Materials

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In 2023, the global production of new red mud is expected to reach nearly 200 million tons, but less than 10% of it is currently being utilized in an environmentally friendly manner. To reduce the sintering temperature of alumina ceramics, a sintering aid method is used, as high-purity alumina ceramics require a solid-phase sintering temperature of over 1700 °C. The metal oxides present in red mud are necessary components for high-performance composite alumina ceramics. Composites were obtained by mixing and sintering red mud and Al2O3. This study focused on the mechanical properties and wettability of these composites. The results indicated that the 10% red mud–Al2O3 composite exhibited the highest hardness (20.12 GPa) and flexural strength (346 MPa). This is attributed to the formation of a mineral phase dominated by CaAl12O19, generated by the red mud during the sintering process, which filled the pores and reduced porosity. The surface energy of the red mud–Al2O3 composite was the highest at room temperature and high temperature, reaching 49.60 mJ·m−2 and 1164.7 mJ·m−2, respectively, indicating that it has better stability at both room and high temperatures. This study provides an important fundamental basis for the application of red mud–alumina composites to replace alumina-based composites in the field of construction materials, molten metal filters, ceramic cleavers, etc.

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Section: Introductionmentioning

confidence: 99%

Wettability and Mechanical Properties of Red Mud–Al2O3 Composites

Chen,

Li,

Jiang

2024

Materials

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“…As the main components of red mud contain Na 2 O, CaO, Al 2 O 3 , and SiO 2 , commonly used in microcrystal systems, many researchers hope to prepare glass-ceramics from pure red mud. All attempts failed [14][15][16][17]. Therefore, in order to successfully prepare red mud glass-ceramics, other components must be added for regulation.…”

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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Fabrication and Properties of Self-foamed Glass Ceramics from Red Mud and Ceramic Tile Polishing Waste

Bai,

Li,

et al. 2024

J. Sustain. Metall.

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Preparation of glass-ceramics from chromite-containing tailings solidified with Red Mud

Cited by 10 publications

References 22 publications

Wettability and Mechanical Properties of Red Mud–Al2O3 Composites

Wettability and Mechanical Properties of Red Mud–Al2O3 Composites

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

Fabrication and Properties of Self-foamed Glass Ceramics from Red Mud and Ceramic Tile Polishing Waste

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