Gibbs energy showed that AlCl3 can chloridize Pr6O11 and release Pr(III) ions in the LiCl-KCl-Pr6O11-AlCl3 melts. The co-reduction process of Al(III), Pr(III) and Li(I) ions was investigated in the LiCl-KCl-Pr6O11-AlCl3 melts. Three signals, corresponding to different Al-Pr intermetallic compounds, were observed by cyclic voltammetry, square wave voltammetry and open circuit chronopotentiometry. Potentiostatic and galvanostatic electrolysis were conducted to extract Pr element from LiCl-KCl eutectic melts by forming Al-Pr and Al-Li-Pr alloys, respectively. X-ray diffraction (XRD) indicated that both Al-Pr and Al-Li-Pr alloys comprised Al2Pr phase. The composition of Al-Li-Pr alloys was analyzed by inductive coupled plasma atomic emission spectrometer (ICP-AES). The proportion of Pr element in Al-Li-Pr alloys exceeded 40 wt.% when the concentration of AlCl3 reached 8 wt.% in the LiCl-KCl-Pr6O11 (I wt.%) melts. (C) 2012 Elsevier Ltd. All rights reserved.