Reaction Routes for the Electro-Deoxidation of Ilmenite in Molten Salt

Xing Li Zou; Xiong Gang Lu; Wei Xiao; Chang Yuan Lu

doi:10.4028/www.scientific.net/AMR.937.58

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Reaction Routes for the Electro-Deoxidation of Ilmenite in Molten Salt
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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 937Reaction Routes for the Electro-Deoxidation of...

Reaction Routes for the Electro-Deoxidation of Ilmenite in Molten Salt

Abstract:

The reaction mechanism of electrochemical extraction of Fe_xTi alloys direct from natural ilmenite in molten CaCl₂ has been investigated. The electrochemical deoxidation experiment process was carried out at 1000 °C and 3.8 V, and a solid oxide oxygen-ion-conducting membrane (SOM) filled with carbon-saturated liquid metal was served as the inert anode of the electrolytic cell. The macro-/micro-structure variations of the samples during electrolysis were investigated. The reaction routes from natural ilmenite to Fe_xTi alloys are proposed and discussed. It is found that element Fe is reduced firstly from ilmenite and thus serves as electronic conductor to accelerate subsequent deoxidation, Fe_xTi alloys can be produced directly from natural ilmenite by electrolysis in molten salt. It is suggested that Fe_xTi phase can be formed directly from Fe_xTiO_y compounds and/or from deoxidation-generated Ti and Fe through various reaction routes.

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Advanced Materials Research (Volume 937)

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58-63

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https://doi.org/10.4028/www.scientific.net/AMR.937.58

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Online since:

May 2014

Authors:

Xing Li Zou*, Xiong Gang Lu, Wei Xiao, Chang Yuan Lu

Keywords:

Electro-Deoxidation, Ilmenite, Molten Salt, Reaction Mechanism, Titanium Alloy

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