Transformations in the Mn-O-Si system using concentrated solar energy

•Solar energy has a great potential in high temperature process as the production of ferroalloys.•We proposed the silicothermic reduction of the oxide of manganese (IV) using concentrated solar energy.•Silicon-manganese mixtures and silicomanganese were obtained by silicothermic reduction of the oxi...

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Bibliographic Details
Published in:Solar energy 2019-05, Vol.184, p.148-152
Main Authors: Fernández-González, D., Prazuch, J., Ruiz-Bustinza, I., González-Gasca, C., Piñuela-Noval, J., Verdeja, L.F.
Format: Article
Language:English
Subjects:
Carbon dioxide
Carbon dioxide emissions
Concentrated solar energy
Energy consumption
Environment
Ferroalloys
Liquidus
Manganese
Metallurgy
Reagents
Silicomanganese
Silicon
Slag
Solar energy
Solar furnaces
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Summary:•Solar energy has a great potential in high temperature process as the production of ferroalloys.•We proposed the silicothermic reduction of the oxide of manganese (IV) using concentrated solar energy.•Silicon-manganese mixtures and silicomanganese were obtained by silicothermic reduction of the oxide of manganese (IV). Energy consumption and carbon dioxide emissions are a problem in the metallurgical industries. The synthesis of manganese and silicomanganese using concentrated solar energy is proposed in this paper. Mixtures of oxide of manganese (IV) and silicon (50 wt% and 75 wt%) were treated in a 1.5 kW solar furnace located in Odeillo. Results demonstrated that mixtures of manganese and silicon, but also silicomanganese, are obtained after treatment even in the less favorable situation: without iron, which reduces the liquidus temperature, and without slag-forming reagents.
ISSN:0038-092X
1471-1257
DOI:10.1016/j.solener.2019.04.004