Preparation and microstructure analysis of CaO-MgO-SiO<sub>2</sub> steel-slag ceramics

ZHAO Li-hua; CANG Da-qiang; LIU Pu; BAI Hao; TANG Qi

doi:10.13374/j.issn1001-053x.2011.08.001

Volume 33 Issue 8

Jul. 2021

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ZHAO Li-hua, CANG Da-qiang, LIU Pu, BAI Hao, TANG Qi. Preparation and microstructure analysis of CaO-MgO-SiO2 steel-slag ceramics[J]. Chinese Journal of Engineering, 2011, 33(8): 995-1000. doi: 10.13374/j.issn1001-053x.2011.08.001

Citation:

ZHAO Li-hua, CANG Da-qiang, LIU Pu, BAI Hao, TANG Qi. Preparation and microstructure analysis of CaO-MgO-SiO₂ steel-slag ceramics[J]. Chinese Journal of Engineering, 2011, 33(8): 995-1000. doi: 10.13374/j.issn1001-053x.2011.08.001

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Preparation and microstructure analysis of CaO-MgO-SiO₂ steel-slag ceramics

doi: 10.13374/j.issn1001-053x.2011.08.001

ZHAO Li-hua^{1,2
,
,},
CANG Da-qiang^1,2,
LIU Pu¹,
BAI Hao^1,2,
TANG Qi³

1. State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, China;
2. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China;
3. Foshan Oceano Ceramic Co. Ltd., Foshan 528000, China

Received Date: 2011-01-12
Available Online: 2021-07-30

Abstract

Abstract

A ceramic with stable and good performances was synthesized by designing the composition of the CaO-MgO-SiO₂ system with steel slag as one of ceramic raw materials.Its bending strength can reach up to 99.84MPa.The ceramic samples were tested and analyzed by scanning electron microscopy(SEM),electron probe microanalysis(EPMA) and X-ray diffraction analysis(XRD).The results show that when the content of steel slag is 40% the dominated crystal phase in the ceramic is a solid solution of diopside and ferric diopside,but when the content of steel slag is higher than 65% the dominated crystal phases are akermanite and diopside.It is indicated that synthesizing a ceramic with steel slag is a promising technology for the utilization of steel slag with high added values.
- steel slag,
- solid wastes,
- waste utilization,
- ceramic materials,
- microstructure,
- diopside