Results 11 to 20 of about 19,814 (230)
Effective Removal of Fe and Ca From Coal Fly Ash for High-Purity and High-Surface-Area Zeolite X Synthesis: A Comparative Study of Acid Refluxing and Acid Roasting Methods. [PDF]
ChemistryOpenCoal fly ash (CFA) is an abundant industrial waste rich in silica and alumina and represents a viable feedstock for zeolite synthesis; however, high levels of calcium and iron limit zeolite purity and crystallisation. This study evaluates acid refluxing and acid roasting as pre‐treatment strategies for the simultaneous removal of Ca and Fe from high ...
Gaolefufa EMV +4 more
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Thermal decomposition and reaction sintering for synthesis of mullite-zirconia composite using kaolin, γ-alumina and zirconia [PDF]
Cerâmica, 2021 The refractory materials used in the wall of the furnaces for glass melting can be prepared from mullite-zirconia composite material. The composite of mullite/zirconia was synthesized from Iraqi kaolin, γ-alumina, and zirconia using thermal decomposition
M. A. Aswad +2 more
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Research on thermal barrier and thermal shock resistance of NiCr−mullite composite ceramic coating
Fenmo yejin jishu, 2021 Five groups of the NiCr−mullite composite powders in various proportions were mixed by ball milling. The NiCr−mullite composite ceramic coatings on the 45 Steel were prepared by the supersonic plasma spraying.
CAO Yang +4 more
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Microwave sintering of mullite-Al2O3 from kaolin precursor [PDF]
Materials Research, 2014 In the present work the effect of the microwave hybrid fast sintering of mullite-Al2O3 with non-stoichiometric mullite composition was investigated. Samples were fast sintered using a range of microwave power from 1.2 to 2.1 kW. The mullitization process
Lilian Cecilia Reinoso Navarro +2 more
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Thermal insulating properties of hollow mullite fibers prepared on a ceiba bio-template
Open Ceramics, 2021 Ceiba fibers have excellent thermal insulating properties because of their hollow structures. Mullite fibers are widely used in heat-insulating refractory materials because of their low thermal conductivity and excellent thermal shock stability. However,
Ziwen Cheng +3 more
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Study on the Effect of Binders on the Properties of Mullite Porous Ceramics for Flue Gas Filtration [PDF]
E3S Web of Conferences, 2023 Fused mullite particles are used to prepare mullite porous ceramics by gel-casting method, using polysilicon waste and ρ-Al2O3 powder as the binder, and starch as the pore forming agent. The content of the pore forming agent was 20%, and the ratio of the
Liu Zhenli +3 more
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Crystals, 2022 A novel strategy is proposed to design an exclusive nanostructured mullite spherical feedstock for environmental barrier coatings (EBCs) via atmosphere plasma spraying (APS).
Fei Xiao +7 more
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Journal of Materials Research and Technology, 2022 Preparation of mullite from high-alumina coal fly ash (CFA) has become one of the most important ways for high-value utilization. However, low Al2O3/SiO2 ratio, poor reaction activity and various impurities in fly ash led to poor quality of mullite ...
Jian-ming Gao +4 more
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International Journal of Analytical Chemistry, 2022 Because of its excellent properties, mullite porous ceramics are widely used in thermal insulation materials, catalyst carriers, gas-liquid filtration, separation materials, etc.
Hongyao Zhang
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Open Ceramics, 2023 Fused mullite is used in refractories and as an abrasive due to its suitable properties. Mullite is formed over a wide range in the Al2O3–SiO2 phase system, preferably as 3:2 or 2:1 mullite.
D. Mühmer +3 more
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