Extraction of Ti and Ti Alloy from Titaniferous Residue Using SOM Process

Abstract:

Using process of Solid Oxygen-ion conducting Membrane (SOM), to produce Ti and Ti alloy directly from Titaniferous residue in molten CaCl2 were proposed by constant voltage (3.0～3.5V) for electrolysis 2~6h at 1100°C. The residues were ball-milled and pressed into pellets as the cathode, and the liquid copper was saturated with graphite powder and encased in YSZ tube as the anode. The results show that the content of Ti increase with electrolytic time, the characteristic morphology present as granule. Ti-Fe alloy is obtained from Ti-Fe residue during electrolysis 6h. For Ti -rich residue, when the forming pressure of pellets from 6MPa decrease to 3MPa, only electrolysis for 4h can completely remove the oxygen, and pure Ti is obtained for electrolysis 6h, this is an unprecedented finding.

• Periodical: Advanced Materials Research (Volumes 550-553)
• Pages: 1811-1816
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.550-553.1811
• Online since: July 2012
• Authors: Chao Yi Chen, Jun Qi Li, Xiong Gang Lu
• Keywords: Electrolysis, Solid Oxygen-Ion Membrane (SOM), Titaniferous Residue, Titanium

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