Articles
  • Comparison of microwave and conventional processing stainless steelmaking dust to prepare black ceramic pigments

  • Zhiqiao Lia, Xiang Zhanga,*, Guojun Maa, Rodrigue Armel Muvunyib and Dingli Zhengb

  • aThe State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan, 430081, P.R. China
    bKey Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education, Wuhan University of Science and Technology, Wuhan 430081, P.R. 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

Using stainless steelmaking dust (SSD) for the preparation of black ceramic pigments can not only reduce pollution, but also have more considerable economic, environmental and social value. Black ceramic pigments with the mixed spinel-type were prepared from SSD by microwave and conventional processing, respectively. The properties of black ceramic pigments were studied by X-ray diffraction, Fourier transform infrared spectroscopy, Scanning electron microscope and Colorimeter. The results show that the main phase compositions of pigment sample synthesised by microwave processing are Fe3O4, FeCr2O4, NiFe2O4 and NiMn0.5Cr1.5O4. Compared with conventional processing, microwave processing can significantly reduce the required temperature of spinel formation reaction and promote the reaction. Moreover, the pigment sample prepared by microwave processing (PSM) is blacker and has a lower band gap than that prepared by conventional processing (PSC). The microstructure of PSM is regular polyhedral, and the crystal size of it is significantly larger than the PSC. In addition, the preparation process of PSM is more efficient and has a better application prospect compared with PSC


Keywords: microwave processing, stainless steelmaking dust, black ceramic pigments, transition metal element, spinels

This Article

  • 2022; 23(3): 344-349

    Published on Jun 30, 2022

  • 10.36410/jcpr.2022.23.3.344
  • Received on Dec 30, 2021
  • Revised on Jan 15, 2022
  • Accepted on Jan 25, 2022

Correspondence to

  • Xiang Zhang

  • he State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan, 430081, P.R. China
    Tel : +86-158-2718-1426 Fax: +86-027-68862529

  • E-mail: zx91@wust.edu.cn