With the aim of high-efifciency utilization of Dandong ludwigite ore, a new process of metallizing reduction and mag-netic separation was proposed, and the effects of reduction temperature, reduction time, carbon ratio, ore size and coal size on the efifciency of the process were investigated in details, and relevant mechanisms were elucidated by SEM and EDS. The optimum technological parameters for metallizing reduction and magnetic separation on ludwigite ore were obtained as reduction tempera-ture of 1 250 °C, reduction time of 60 min, carbon ratio of 1.4, ore size of 0.500?2.000 mm, and coal size of 0.50?1.50 mm. After adopting the optimum parameters, the iron content and recovery ratio of iron in magnetic substance are 87.78% and 88.02%, re-spectively, while the recovery ratios of boron, magnesium and silicon in non-magnetic substance are 88.86%, 94.60% and 98.66%, respectively. After metallizing reduction and magnetic separation, valuable elements of ludwigite ore could be separated and uti-lized in subsequent steelmaking process and hydrometallurgy process.
参考文献
| [1] | X.J.Zheng.Boron Iron Ore Processing[M].Chemical Industry Press,Beijing,2009 |
| [2] | R.Liu;X.X.Xue;T.Jiang;S.H.Zhang,D.W.Huang.[J].Multipurpose Utilization of Mineral Resources,2006(02):33-36. |
| [3] | Q.M.Peng;M.R.Palmer .[J].Economic Geology,2002,97:93-108. |
| [4] | Y.F.Lu;Y.C.Cheng;H.Q.Li;C.J.Xue F.W.Cheng .[J].Acta Geol Sin,2005,79:408-414. |
| [5] | 王延卓,刘肃敬,贾玉国,李然菊.辽东地区硼矿床矿物组合特征[J].有色矿冶,2007(03):5-8. |
| [6] | X.J.Zheng.Production and Application of Boron Compounds[M].Chemical Industry Press,Beijing,2008 |
| [7] | G.Wang;J.S.Wang;Y.G.Ding;S.Ma Q.G.Xue .[J].ISIJ International,2012,52:45-51. |
| [8] | X.P.Zhang;J.F.Lang;C.M.Cui .[J].Iron and Steel,1995,30(12):9-12. |
| [9] | Z.D.Yang;S.L.Liu;Z.F.Li;X.X.Xue .[J].J Iron Steel Res Int,2007,14(06):32-36. |
| [10] | Y.G.Ding;J.S.Wang;G.Wang;S.Ma,Q.G.Xue .[J].J Iron Steel Res Int,2012,19(06):9-13. |
| [11] | S.L.Liu;C.M.Cui;X.P.Zhang .[J].ISIJ International,1998,38(10):1077-1079. |
| [12] | A. Mergen;M. H. Demirhan;M. Bilen .Processing of boric acid from borax by a wet chemical method[J].Advanced Powder Technology: The internation Journal of the Society of Powder Technology, Japan,2003(3):279-293. |
| [13] | N. Acarkan;G. Bulut;O. Kangal .A new process for upgrading boron content and recovery of borax concentrate[J].Minerals Engineering,2005(7):739-741. |
| [14] | P.X.Zhang;Z.T.Sui .[J].Metallurgical and Materials Transactions B:Process Metallurgy and Materials Processing Science,1995,26:345-351. |
| [15] | F.Qi;T.M.Yu;J.C.Zhong;H.Z.Wang .[J].Industrial Minerals & Pro-cessing,2011,40(07):11-14. |
| [16] | G.H.Li;B.J.Liang;M.J.Rao;Y.B.Zhang T.Jiang .[J].Mine Eng,2014,56:57-60. |
| [17] | Z. T. SUI;P. X. ZHANG;C. YAMAUCHI .PRECIPITATION SELECTIVITY OF BORON COMPOUNDS FROM SLAGS[J].Acta materialia,1999(4):1337-1344. |
| [18] | S.L.Liu;J.Chen;X.P.Zhang .[J].J Northeast Univ Nat Sci,1996,17:378-380. |
| [19] | J.Li;Z.F.Xu;Y.Li;Y.N.Li T.Jiang .[J].J Cent South Univ,2012,43:4171-4176. |
| [20] | J.Li;Z.G.Fan;Y.L.Liu;S.L.Liu T.Jiang Z.P.Xi .[J].Trans Nonfer-rous Met Soc China,2010,20:1161-1165. |
| [21] | M.Yesilyurt .[J].Chemical Engineering and Processing,2004,43:1189-1194. |
| [22] | H.C.Tsai;S.L.Lo .[J].Journal of Hazardous Materials,2011,186:1431-1437. |
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