Environmentally Friendly Electrochemical Method for the Direct Extraction of Titanium from High-Titanium Slag
The solid oxide membrane (SOM) method is an emerging technology for the environmentally friendly and energy-efficient extraction of metals direct from their respective oxides. This paper reports on the successful extraction of titanium powder direct from high-titanium slag in molten calcium chloride using the SOM method. The deoxidation process was carried out at 1000 °C and potential of 3.8 V. The current feature, phase composition evolution and morphology variation were investigated experimentally. It is found that the titanium can be successfully electrochemically extracted from high-titanium slag, the deoxidation process possesses a considerable electrolysis rate, and the current efficiency reaches ~55% in 6 h. It is shown that the SOM method is a promising alternative process for the extraction of titanium direct from titanium mineral resources.
Qunjie Xu, Honghua Ge and Junxi Zhang
X. L. Zou et al., "Environmentally Friendly Electrochemical Method for the Direct Extraction of Titanium from High-Titanium Slag", Advanced Materials Research, Vols. 361-363, pp. 655-659, 2012