Articles
  • Migration pattern and crystallization characteristics of CeO2 in tailing glass-ceramics under microwave irradiation

  • Wence Xua, Zhao Caoa, Rui Mac, Nannan Wub and Shunli Ouyangb,*

  • aSchool of Mining and Coal Engineering, Inner Mongolia University of Science and Technology, Baotou 014010, China
    bGuangzhou Maritime University, Guangzhou 510725, China
    cSchool of Material and Metallurgy, Inner Mongolia University of Science & Technology, Baotou 014010, China

  • This article is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Slag glass-ceramics doped with different proportions of CeO2 were prepared by fusion casting method using iron tailings and fly ash as raw materials. The effect of CeO2 on the activation energy and crystallization pattern of glass-ceramics under the effect of ohmic thermal radiation and microwave radiation was investigated. The experimental results show that the crystallization activation energy of glass-ceramics gradually increases with the addition of CeO2, and the diopside crystallization is suppressed. Compared with conventional heat-treated samples, microwave irradiation effectively reduces the glass transition temperature, mainly depending on the enhanced crystallization kinetics by microwave non-thermal effects. Further analyzed by Raman spectroscopy, the microwave effect promoted the combination of Ce4+ with [SiO4] to generate fully depolymerized Q0, inhibited the generation of Q2 and Q3, and increased the glass stability


Keywords: Slag glass-ceramics, Microwave effect, Raman spectroscopy, CeO2, Diopside

This Article

  • 2023; 24(3): 512-524

    Published on Jun 30, 2023

  • 10.36410/jcpr.2023.24.3.512
  • Received on Feb 10, 2023
  • Revised on Mar 16, 2023
  • Accepted on Mar 20, 2023

Correspondence to

  • Shunli Ouyang

  • Guangzhou Maritime University, Guangzhou 510725, China
    Tel : 13847267569

  • E-mail: ouyangshunli01@163.com