Formation of Ca<sub>3</sub>SiO<sub>5</sub> prepared by electric and microwave burning

Kai Wang; Shizong Long; Caixia Yan

doi:10.1016/S1005-8850(08)60034-1

Volume 15 Issue 2

Apr. 2008

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Abstract

International Journal of Minerals, Metallurgy and Materials > 2008 > 15(2): 178-181. > DOI: 10.1016/S1005-8850(08)60034-1

Kai Wang, Shizong Long, and Caixia Yan, Formation of Ca₃SiO₅ prepared by electric and microwave burning, J. Univ. Sci. Technol. Beijing , 15(2008), No. 2, pp.178-181. https://dx.doi.org/10.1016/S1005-8850(08)60034-1

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Materials

Formation of Ca₃SiO₅ prepared by electric and microwave burning

Kai Wang^1), ,,
Shizong Long¹⁾ and
Caixia Yan²⁾

Author Affilications

Key Laboratory of Silicate Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China
School of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China

Received: 11 May 2007; Available Online: 13 June 2021

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Abstract

Abstract

A new method of sintering Ca₃SiO₅ by the combination of conventional and microwave heating methods was studied. The influence of transitional metal oxides such as Fe₂O₃, Cr₂O₃, MnO₂, and V₂O₅ used as the additive of microwave absorption on the microwave-promoted burning of Ca₃SiO₅ was investigated. The experimental results indicate that the new burning technique is capable of promoting the sintering of Ca₃SiO₅. At 1200-1300℃ in an electric furnace, Ca₃SiO₅ can be obtained only when the sample is heated in a microwave for 110-240 s, and the free lime content is below 40wt%. Based on the experiments, Fe₂O₃, Cr₂O₃, MnO₂, and V₂O₅ can enhance microwave sintering. Amongst them, Cr₂O₃ is the most effective. The characteristic of the X-ray diffraction peaks of Ca₃SiO₅ is similar to those of standard Ca₃SiO₅, but the peaks are wider.
- microwave sintering,
- Ca₃SiO₅,
- free lime,
- X-ray diffraction,
- petrographic analysis

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