Abstract
Ferronickel slag can be used for refractory material production by sintering it with the addition of sintered magnesia in the microwave field. In this study, the influence of microwave sintering temperature and time on the refractoriness and mechanical properties of refractory material was assessed based on determination of the phase transformations and microstructural evolutions of the materials obtained at different sintering temperatures and time. It was shown that a high-quality refractory material with refractoriness of 1730 ℃ was obtained when the sample was sintered at 1350 ℃ for 20 min. The findings can be used for developing an efficient approach for utilization of ferronickel slag and other related industrial wastes.
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