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Metal Mine ›› 2012, Vol. 41 ›› Issue (11): 145-147.

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Experiment of Iron Concentration From a Cyanided Tailing with the Process of Direct Reduction Roast-Magnetic Separation

Liu Na,Sun Tichang,Liu Zhenzhen,Jiang Man   

  1. Civil and Environmental Engineering Institute,University of Science and Technology Beijing
  • Online:2012-11-15 Published:2012-11-27

Abstract: Experimental research on cyanided tailings containing 48.05% grade of iron by the process of direct reduction roast-magnetic separation tests was carried out. The results indicated that under the condition of roasting at 1 150  ℃ for 40 min with 20% bituminous coal 2,and grinding fineness of -0.074 mm 78% and magnetic intensity,the DRI with Fe grade of 94.11% and recovery of 90.14% was obtained by the process of one roughing low intensity magnetic separation with intensity of 87.56 kA/m. In the process,iron was concentrated efficiently,meanwhile high content of harmful ingredients,sulfur are enriched into tailings.

Key words: Cyanided tailings, Direct reducing roast, Magnetic separation, Direct reduction iron