Preprint Article Version 1 This version is not peer-reviewed

Oxidative Leaching of Vanadium from Vanadium-Chromium Reducing Residue with MnO2

Version 1 : Received: 19 July 2019 / Approved: 22 July 2019 / Online: 22 July 2019 (07:46:54 CEST)

How to cite: Peng, H.; Yang, L.; Chen, Y.; Guo, J. Oxidative Leaching of Vanadium from Vanadium-Chromium Reducing Residue with MnO2. Preprints 2019, 2019070232 (doi: 10.20944/preprints201907.0232.v1). Peng, H.; Yang, L.; Chen, Y.; Guo, J. Oxidative Leaching of Vanadium from Vanadium-Chromium Reducing Residue with MnO2. Preprints 2019, 2019070232 (doi: 10.20944/preprints201907.0232.v1).

Abstract

This paper focused on the oxidative leaching process of vanadium from vanadium-chromium reducing residue in alkaline medium with MnO2. The effect of experimental parameters including reaction time, reaction temperature, dosage of MnO2, dosage of NaOH, and liquid-to-solid ratio on the leaching efficiency of vanadium had been studied. The results indicated that MnO2 was an efficient oxidant for leaching out of vanadium. The leaching efficiency of vanadium was up to 97.25% under optimal reaction conditions: reaction temperature of 90 ℃, reaction time of 60 min, dosage of MnO2 at 50 wt.%, concentration of NaOH at 30 wt.% and liquid-to-solid at 5:1 mL/g.

Subject Areas

leaching; vanadium; MnO2

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