Journal article
Continuous float-sink density separation of lump iron ore using a dry sand fluidized bed dense medium
J Oshitani, S Kajimoto, M Yoshida, GV Franks, Y Kubo, S Nakatsukasa
Advanced Powder Technology | Published : 2013
Abstract
A continuous separator based on float-sink density separation using a gas-solid fluidized bed dense medium was used to upgrade iron ore. The separator has three devices for (A) conveying floaters, (B) recovering floaters, and (C) conveying and recovering sinkers. The optimum speeds of these devices were investigated using density adjusted spheres of the diameter = 30 mm in the range of 2400-3300 kg/m3 in density increments of 100 kg/m3. A mixture of zircon sand and iron powder was used as the fluidized medium to adjust the fluidized bed density to produce a separation density = 2850 kg/m3, a typical separation density for lump iron ore wet separation. The recovery of the spheres as floaters ..
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Awarded by Australian Research Council
Funding Acknowledgements
This study was supported by an Industrial Technology Research Grant Program in 2008 from the New Energy and Industrial Technology Development Organization (NEDO) of Japan, the Core-to-Core Program promoted by the Japan Society for the Promotion of Science (Project No. 18004) and the Australian Research Council, AMIRA International, BHP Billiton, Rio Tinto, Orica, Anglo Platinum, Xstrata, Freeport McMoran and AREVA NC through the Australian Minerals Science Research Institute (AMSRI) (LP0667828). Thanks to the Australian Academy of Science and the Japan Society for the Promotion of Science for the Bilateral Exchange Fellowship for GVF to visit Okayama in September 2012. Thanks to Eric Phuak for his helpful comments in interpreting the separation results.