, Volume 70, Issue 6, pp 1024–1030 | Cite as

Recovery of Vanadium from Magnetite Ore Using Direct Acid Leaching: Optimization of Parameters by Plackett–Burman and Response Surface Methodologies

  • Davood Ghoddocy Nejad
  • Ali Reza Khanchi
  • Majid Taghizadeh
Technical Communication


Recovery of vanadium from magnetite ore by direct acid leaching is discussed. The proposed process, which employs a mixture of nitric and sulfuric acids, avoids pyrometallurgical treatments since such treatment consumes a high amount of energy. To determine the optimum conditions of vanadium recovery, the leaching process is optimized through Plackett–Burman (P–B) design and response surface methodology (RSM). In this respect, temperature (80–95°C), liquid to solid ratio (L/S) (3–10 mL g−1), sulfuric acid concentration (3–6 M), nitric acid concentration (5–10 vol.%) and time (4–8 h) are considered as the independent variables. According to the P–B approach, temperature and acid concentrations are, respectively, the most effective parameters in the leaching process. These parameters are optimized using RSM to maximize recovery of vanadium by direct acid leaching. In this way, 86.7% of vanadium can be extracted from magnetic ore.

Supplementary material

11837_2018_2821_MOESM1_ESM.pdf (411 kb)
Supplementary material 1 (PDF 411 kb)


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Copyright information

© The Minerals, Metals & Materials Society 2018

Authors and Affiliations

  1. 1.Chemical Engineering DepartmentBabol Noshirvani University of TechnologyBabolIran
  2. 2.Nuclear Science and Technology Research InstituteTehranIran

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