Abstract
Sustainable development requires less energy consumption with lower carbon footprint. In this review the solid state reduction behaviour of three oxide ores using methane gas are briefly summarized based on experimental work conducted in our laboratories. The discussion concentrates mainly on mechanisms of the reduction studied through SEM-EDAX and X-ray diffraction techniques. Limited preliminary kinetic input is also mentioned. Iron ore containing titanium and vanadium could be reduced significantly in the solid state with methane-hydrogen mixture up to 400 °C lower than is needed in ordinary solid state carbothermic process. The reduction of chromite and manganese ores were possible similarly at lower temperatures with potential energy savings lower carbon footprint.
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Acknowledgements
The research summarized in this presentation has been supported and financed both: by the “Finland Distinguished Professor” project awarded to Professor R H Eric by Tekes; the Finnish Funding Agency for Innovation, and the Ferro Alloy Producers Association of South Africa. The authors are deeply grateful to both of these organizations.
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© 2017 The Minerals, Metals & Materials Society
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Eric, R.H., Bhalla, A., Halli, P., Taskinen, P. (2017). Solid State Reduction of Iron, Manganese and Chromium Oxide Ores with Methane. In: Wang, S., Free, M., Alam, S., Zhang, M., Taylor, P. (eds) Applications of Process Engineering Principles in Materials Processing, Energy and Environmental Technologies. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-319-51091-0_29
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DOI: https://doi.org/10.1007/978-3-319-51091-0_29
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