Extraction of vanadium from the sulphate leach liquor of the black shale from Nakheil mine NW Quseir,
red sea, Egypt was studied by using a synergistic mixture of di-(2-ethylhexyl) phosphoric acid (DEHPA)
and tributyl phosphate (TBP) in kerosene. A technological sample of this ore material assaying about 2400
μg/ml V, 2300 μg/ml Zn, 570 μg/ml Mo, 1.6 % Fe and 272 μg/mL Ni was collected for the present work.
Metallic iron powder was found greatly an advantage to minimize the iron co-extraction, while adjusting
the pH of aqueous solution to 0.8 minimized the co-extraction of Zn and Ni. The relevant extraction
factors affecting maximum recovery of vanadium have been studied; namely solvent ratio (DEHPA/TBP),
concentration of solvent, O/A phase ratio, contact time, settling time, temperature, the amount of reducing
agent and the time of reduction. Selective stripping of vanadium has been performed using 100g/L Na2CO3
while Mo was left in the organic phase. The relevant stripping factors affecting maximum stripping of
vanadium have been studied namely; O/A phase ratio, contact time, settling time, and the temperature.