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Advances in Applied Ceramics
Structural, Functional and Bioceramics
Volume 115, 2016 - Issue 3
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Research Paper

Preparation of slag glass ceramic from electric arc furnace slag, quartz sand and talc under various MgO/Al2O3 ratios

Z. LiuSchool of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing100083, China;Beijing Key Laboratory of Rare and Precious Metals Green Recycling and Extraction, University of Science and Technology Beijing, Beijing100083, China
,
Y. ZongSchool of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing100083, China;Beijing Key Laboratory of Rare and Precious Metals Green Recycling and Extraction, University of Science and Technology Beijing, Beijing100083, ChinaCorrespondence[email protected]
&
J. HouSchool of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing100083, China;Beijing Key Laboratory of Rare and Precious Metals Green Recycling and Extraction, University of Science and Technology Beijing, Beijing100083, China
Pages 144-151 | Received 24 May 2015, Accepted 20 Jun 2015, Published online: 24 Jul 2015
 
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Abstract

Electric arc furnace slag, quartz sand and talc were combined to prepare slag glass ceramic. The crystallisation behaviour, microstructure, main mechanical properties and chromium solidification performance of glass ceramics were investigated as a function of MgO/Al2O3 ratio through differential thermal analysis, X-ray diffraction, Fourier transform infrared spectroscopy, field emission scanning electron microscopy and mechanical testing. FactSage software was introduced to calculate the batch viscosity. It is established that there is a mutual suppression agreement between MgO and Al2O3. As for the chromium solidification performance, the result of acid leachability was almost consistent with the variation of mechanical properties. The alkaline leachability was near to zero. In all the investigated glass ceramics, samples with 1:1 and 1:2 MgO/Al2O3 ratio values demonstrate excellent mechanical properties and fixing capacity for chromium.

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