A novel route for the fabrication of melilite-spinel porous ceramics with ultralow thermal conductivity and sufficient strength

Huang, Yang; Hu, Ning; Ye, Yicheng; Fu, Fanghui; Lv, Yafei; Jia, Jun; Chen, Dunxi; Ou, Zhibing; Li, Jiangli

doi:10.1016/j.ceramint.2022.09.231

Cited by 17 publications

(3 citation statements)

References 19 publications

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“…There is still a long way to go on the preparation and application of porous ceramics from coal gangue. 30,31…”

Section: Discussionmentioning

confidence: 99%

Research on preparation and related properties of macro–micro porous mullite ceramic skeletons via twice pore-forming technology

Xu,

Hu,

Liu

et al. 2024

RSC Adv.

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“…There is still a long way to go on the preparation and application of porous ceramics from coal gangue. 30,31…”

Section: Discussionmentioning

confidence: 99%

Research on preparation and related properties of macro–micro porous mullite ceramic skeletons via twice pore-forming technology

Xu,

Hu,

Liu

et al. 2024

RSC Adv.

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“…It has been reported that the foamed ceramics could be prepared using coal gangue and can achieve the compressive strength of 1.51 MPa, 18 and the apparent porosity and compressive strength of the foamed ceramics could reach 61.3% and 2.95 MPa, respectively, by using direct pyrolysis coal gangue as raw material. 19 The additives, 20 such as foaming agents and co-solvents, also play an important role in the preparation of foamed ceramics, the low-cost additives help to accelerate the application of large-scale industrial production. 9,[21][22][23] For example, the waste glass with high Si/Al silicate material could be used to reduce the melting point temperature of the formed solids.…”

Section: Introductionmentioning

confidence: 99%

Coal gangue‐based ceramics foams by water spray granulation and post particle stacking method

Dai,

Zhang,

Meng

et al. 2024

Int J Applied Ceramic Tech

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Foamed ceramics were prepared by the water spray granulation and post particle stacking method using coal gangue as the main raw material. The effects of raw material weight ratio (i.e., raw material composition by varying the content of dolomite and talc), calcination temperature, time, and heating rate on the pore structure and properties of the samples were investigated and the foaming mechanism of foamed ceramics was revealed. The crystalline phase of foamed ceramics mainly consisted of quartz, anorthite, and enstatite. The decrease of dolomite content and the increase of talc content in the raw materials led to the initial decrease and then increase of the pore size dispersion coefficient, while the apparent porosity and water absorption of the samples gradually decreased, and the apparent density increased. The sample with a composition of gangue:waste glass:dolomite:albite:talc of 65:5:10:10:10 and calcined at 1200°C for 10 min with a heating rate of 1°C/min has the optimized uniform pore structure. This study provides a high value‐added utilization of coal gangue, and the experimental basis for the preparation of low‐cost foamed ceramics.

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“…Techniques such as foaming, autoclaving, high-temperature sintering, and hydrothermal synthesis are applied to convert coal-based solid waste into porous materials. The resulting products, including various solid-waste-based zeolites, ceramics, geopolymer, etc., have abundant pore structures, stable properties, and are made from inexpensive and readily available raw materials, which can be applied in practical production [21][22][23][24]. This article reviews the advanced processes for converting coal gangue and fly ash into various energy and environmental protection porous materials.…”

Section: Introductionmentioning

confidence: 99%

Review of the Preparation and Application of Porous Materials for Typical Coal-Based Solid Waste

Wang

et al. 2023

Materials

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The discharge and accumulation of coal-based solid waste have caused great harm to the ecological environment recently. Coal-based solid wastes, such as coal gangue and fly ash, are rich in valuable components, such as rare earth elements (REY), silicon dioxide, alkali metal oxides, and transition metal oxides, which can be used to synthesize various functional Si-based porous materials. This article systematically summarizes the physicochemical characteristics and general processing methods of coal gangue and fly ash and reviews the progress in the application of porous materials prepared from these two solid wastes in the fields of energy and environmental protection, including the following: the adsorption treatment of heavy metal ions, ionic dyes, and organic pollutants in wastewater; the adsorption treatment of CO2, SO2, NOx, and volatile organic compounds in waste gas; the energy regeneration of existing resources, such as waste plastics, biomass, H2, and CO; and the preparation of Li–Si batteries. Combining the composition, structure, and action mechanism of various solid-waste-based porous materials, this article points out their strengths and weaknesses in the above applications. Furthermore, ideas for improvements in the applications, performance improvement methods, and energy consumption reduction processes of typical solid-waste-based porous materials are presented in this article. These works will deepen our understanding of the application of solid-waste-based porous materials in wastewater treatment, waste gas treatment, energy regeneration, and other aspects, as well as providing assistance for the integration of new technologies into solid-waste-based porous material preparation industries, and providing new ideas for reducing and reusing typical Chinese solid waste resources.

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A novel route for the fabrication of melilite-spinel porous ceramics with ultralow thermal conductivity and sufficient strength

Cited by 17 publications

References 19 publications

Research on preparation and related properties of macro–micro porous mullite ceramic skeletons via twice pore-forming technology

Research on preparation and related properties of macro–micro porous mullite ceramic skeletons via twice pore-forming technology

Coal gangue‐based ceramics foams by water spray granulation and post particle stacking method

Review of the Preparation and Application of Porous Materials for Typical Coal-Based Solid Waste

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