Extraction Behaviors of Vanadium(V) with Unacidified and Acidified N1923 from a Real Leachate of Vanadium-Titanomagnetite

Recently, vanadium extraction has received special attention owing to the application of vanadium in the energy storage. In this study, a vanadium-containing leachate obtained from vanadium-titanomagnetite was employed for the solvent extraction. The primary amine N1923 is selected for vanadium recovery from the feed solution with a high vanadium concentration of 29.21 g/L. The effects of initial pH of feed solution on the vanadium extraction with unacidified N1923 and HCl acidified N1923 are first investigated, respectively. Subsequently, the vanadium extraction performance by HNO3 acidified N1923 is presented. Furthermore, the comparative analysis of vanadium stripping by NaOH from both loaded HCl and HNO3 acidified N1923 is also presented. These experimental results provide a significant reference for the vanadium extraction by N1923 in the industrial production.