Abstract
Bauxite ore residue is a hazardous byproduct derived from alumina production, containing iron, titanium, aluminum and other valuable metals. The feasibility of an integrated technological route for recovering titanium from bauxite ore residue was verified in this study. Titanium-bearing iron concentrate was first recycled through magnetic separation process, and titanium was further leached from the non-magnetic material derived from the upper-stream process by using sulfuric acid. The effects of magnetic intensity on the recovery of iron, and the effects of H2SO4 concentration, leaching temperature, leaching time and liquid to solid ratio on the leaching of titanium have been investigated. The results showed a magnetic concentrate with total iron grade of 56.39% and TiO2 content of 8.66% was obtained under a two-stage magnetic separation process (intensity: 0.8 and 0.2 T, respectively), and magnetic recoveries of iron and titanium attained 55.79 and, 17.37% respectively. 96.36% TiO2 was subsequently leached from the non-magnetic material under the optimal conditions of sulfuric acid concentration of 8 mol/L, leaching temperature of 70 °C, leaching time of 120 min, and liquid to solid ratio of 8.
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References
D. Liu, C. Wu, Stockpiling and comprehensive utilization of bauxite ore residue research progress. Materials 5(12), 1232–1246 (2012)
G. Power et al., Bauxite ore residue issues: I. Current management, disposal and storage practices. Hydrometallurgy 108, 33–45 (2011)
N. Menzies et al., Seawater neutralization of alkaline bauxite ore residue and implications for revegetation. J. Environ. Qual. 33, 1877–1884 (2004)
S. Leonardou et al., Titanium leaching from bauxite ore residue by diluted sulfuric acid at atmospheric pressure. J. Hazard. Mater. 157, 579–586 (2008)
W. Wang et al., Metallurgical processes for scandium recovery from various resources: a review. Hydrometallurgy 108, 100–108 (2011)
M. Samouhos et al., Greek “bauxite ore residue” residue: a study of microwave reductive roasting followed by magnetic separation for a metallic iron recovery process. J. Hazard. Mater. 254–255, 193–205 (2013)
Y. Yang et al., Recovery of iron from bauxite ore residue by selective leach with oxalic acid. Hydrometallurgy 157, 239–245 (2015)
Y. Huang et al., A facile disposal of Bayer bauxite ore residue based on selective flocculation desliming with organic humics. J. Hazard. Mater. 301, 46–55 (2016)
Y. Huang et al., A perspective of stepwise utilisation of Bayer bauxite ore residue: step two—extracting and recovering Ti from Ti-enriched tailing with acid leaching and precipitate flotation. J. Hazard. Mater. 307, 318–327 (2016)
Y. Liu et al., Hidden values in bauxite residue (red mud): recovery of metals. Waste Manag. 34(12), 2662–2673 (2014)
E. Sayan et al., Statistical modeling of sulfuric acid leaching of TiO2 from bauxite ore residue. Hydrometallurgy 57, 181–186 (2000)
G. Li et al., Stepwise extraction of valuable components from bauxite ore residue based on reductive roasting with sodium salts. J. Hazard. Mater. 280, 774–780 (2014)
G. Li et al., Beneficiation of aluminum-, iron-, and titanium-bearing constituents from diasporic bauxite ores. JOM. doi:10.1007/s11837-016-2215-4
S. Bhatnagar et al., Pilot plant for the recovery of titanium dioxide from bauxite sludge. J. Sci. Ind. Res. 4, 378–381 (1945)
Acknowledgements
The authors wish to express their thanks to the National Natural Science Foundation of China (Nos. 51234008 and 51174230) for financial support. This work was also financially supported by the Co-innovation Center for Clean and Efficient Utilization of Strategic Metal Mineral Resources.
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© 2017 The Minerals, Metals & Materials Society
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Li, G., Gu, F., Luo, J., Deng, B., Peng, Z., Jiang, T. (2017). Recovery of Iron-, Titanium-Bearing Constituents from Bauxite Ore Residue via Magnetic Separation Followed by Sulfuric Acid Leaching. In: Ratvik, A. (eds) Light Metals 2017. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-319-51541-0_11
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DOI: https://doi.org/10.1007/978-3-319-51541-0_11
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