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2015 | 13 | 1 |

Article title

Alkali roasting of bomar ilmenite: rare earths recovery and physico-chemical changes


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In this work, the alkali roasting of ilmenite
(FeTiO3) is presented as a process route for integrated beneficiation of the mineral for rutile-rich phase and rare earth oxides; the latter is released as a consequence of physical changes in the ilmenite matrix, during the water leaching after roasting. The oxidative alkali roasting transforms ilmenite mineral into water-insoluble alkali titanate and water-soluble ferrite. After roasting the insoluble alkali titanate is separated from rare-earth oxide mixture in colloidal form and water-soluble ferrite. Further leaching of alkali titanate is carried out with oxalic (0.3M) and ascorbic (0.01M) acid solution which removes the remaining Fe2+ ions into the leachate and allows precipitation of high-purity synthetic rutile containing more than 95% TiO2. Iron is removed as iron oxalate. The physico-chemical changes occurred during the roasting and leaching processes are reported by comparing the role of alkali on the roasting process and product morphologies formed.








Physical description


1 - 11 - 2014
6 - 4 - 2014
7 - 2 - 2014


  • Institute for Materials Research, Houldsworth Building, University of Leeds, Leeds LS2 9JT, UK
  • Institute of Electrochemistry, Clausthal University of Technology, 38678 Clausthal-Zellerfeld, Germany
  • Institute for Materials Research, Houldsworth Building, University of Leeds, Leeds LS2 9JT, UK


  • [1] Habashi F., Handbook of Extractive Metallurgy, Wiley-VCH, New York, 1997, Vol.3
  • [2] Chen X., Mao S.S., Chem. Rev., 2007, 107
  • [3] Brown T.J. et al., World mineral production, British Geological Survey, Nottingham, 2013
  • [4] Kingery W.D. et al., Introduction to ceramics, 2nd ed., Wiley-Interscience, New York, 1981
  • [5] Lahiri A., Jha A., Metall. Mater. Trans. B, 2007, 38
  • [6] Foley E. et al., J. Solid State Chem., 1970, 1
  • [7] Jha A. et al., Metall. Mater. Trans. C, 2008, 117
  • [8] Wang Y., Yuan Z., Int. J. Miner. Process, 2006, 81
  • [9] Wang Y. et al., Trans. Nonferrous Met. Soc. China, 2008, 18
  • [10] Liu Y. et al., Int. J. Miner. Process, 2006, 81
  • [11] Amer A.M, Hydrometallurgy, 2002, 67
  • [12] Nayl A.A., Aly H.F., Hydrometallurgy, 2009, 97
  • [13] Mahmoud M.H.H. et al., Hydrometallurgy, 2004, 73
  • [14] Zhang S., Nicol M.J., Hydrometallurgy, 2010, 103
  • [15] Roine A., Outokumpu HSC Chemistry for Windows User´s guide, version 5.1, 2002
  • [16] Sanchez-Segado S., Jha A., TMS Annual Meeting, 2013
  • [17] Tathavadkar V.D., Antony M.P., Jha A., Metall. Mater. Trans. B, 2005, 36
  • [18] Poling B.E. et al., The properties of gases and liquids, 5th ed., Mc Graw Hill, New York, 2001
  • [19] Barriga C. et al., J. Solid State Chem., 1988, 77
  • [20] Lahiri A., Jha A., Hydrometallurgy, 2009, 95
  • [21] Sutter D. et al., Langmuir, 1991, 7(4)

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