Partition of manganese between .ALPHA.-Fe2O3 crystal and Na2O-B2O3 melts.

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概要

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• A study has been made of the partition of Mn between α-Fe2O3 crystal and sodium borate fluxes at the temperatures ranging from 800 to 1100°C as a function of flux compositions.The total Mn content in α-Fe2O3 is linearly related to that in flux in the studied concentration range. The temperature dependence of the partition coefficient kT, Mn=(wt%Mn)solid/(wt%Mn)liquid was found to be positive. It was found that Mn is present as Mn3+ in α-Fe2O3 crystal and Fe and Mn in flux are present as Fe3+ and Mn2+, respectively. On the basis of the mutual interaction of the Mn3+/Mn2+ and Fe3+/Fe2+ redox pairs: Fe3+(s)+Mn2+(l)=Mn3+(s)+Fe2+(l), the partition between solid and liquid phases with a different valency state has been discussed.

• The Iron and Steel Institute of Japanの論文

著者

• Park Bong-Hoon

  Research Institute of Mineral Dressing and Metallurgy, Tohoku University

• Suito Hideaki

  Research Institute of Mineral Dressing and Metallurgy, Tohoku University

関連論文

• Partition of manganese between .ALPHA.-Fe2O3 crystal and Na2O-B2O3 melts.
• Partitions of Nitrogen and Sulfur between CaO-Al2O3 Melts and Liquid Iron.
• Purification of roasted iron oxide product from waste pickling liquor by glass-ceramic method.
• Removal of impurities in iron ore by Na2O-B2O3 flux.

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