论国内外铁矿石品位的价值(精品)

单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,论国内外铁矿石品位的价值,北京科技大学冶金研究中心,2004.5,1、前言,我国钢铁工业的快速发展，使得钢铁原料的供应格局发生了很大变化，2003年进口了1.48亿,t，,自2002年10月以来，铁矿石的市场剧变，大量铁品位低于58%，,SiO,2,含量高达15%的铁矿石也涌入中国市场，我国不少企业还争相采购，对这些低品位铁矿石的经济价值如何评价，是关系到我国新增产能否发挥效能，我国钢铁生产的效益是否会扩大流失的重大经济问题。,项目,2000年,2001年,2002年,2003年上半年,入炉矿品位(%),56.81,57.28,58.18,58.76,高炉利用系数(,t/m3.d),2.233,2.337,2.448,2.572,入炉焦比(,kg/t),429,423,415,438,喷煤比(,kg/t),118,124,125,115,全国产量(万,t),11303,14893,17074,9512,表1 全国重点企业炼铁技术经济指标1,表2济钢炼铁技术经济指标2,年份,项目,1995,1996,1997,1998,1999,2000,2002,入炉矿品位(%),55.35,55.80,56.26,57.07,57.09,60.07,60.09,利用系数(,t/m,3,.d),2.278,2.498,2.640,2.692,2.754,3.050,3.094,入炉焦比(,kg/t),539.0,524.0,491.0,476.0,438.0,408.0,443.0,喷煤比(,kg/t),32.0,66.0,79.8,93.0,104.0,100.0,96.0,2.国内外铁矿石的品位和质量状况,2.1国产铁矿粉的状况,表3 国产优质铁矿粉的状况,化学成分,矿名,T,Fe,SiO,2,Al,2,O,3,CaO,MgO,S,P,大弧山铁精粉,65.99,5.91,0.43,0.81,0.38,0.028,0.022,弓长岭铁精粉,68.00,4.50,0.47,0.69,0.65,0.0196,0.035,南芬铁精粉,68.10,5.55,0.17,0.93,0.33,0.018,0.017,唐山铁精粉,66.50,5.50,0.85,1.50,0.30,0.011,0.022,迁安铁精粉,67.44,3.96,0.82,1.40,0.28,0.011,0022,金岭铁精粉,66.30,2.90,0.75,0.90,2.23,0.074,-,莱芜铁精粉,65.10,2.21,1.50,1.45,2.00,0.075,-,张家洼铁精粉,64.80,2.40,1.03,0.76,4.29,0.006,-,矿山村铁精粉,65.60,4.47,0.99,0.90,1.88,-,-,下台子铁精粉,66.80,2.99,0.21,0.34,2.59,-,-,大冶铁精粉,65.73,4.64,0.59,1.59,0.79,0.095,0.083,金山店铁精粉,64.78,3.76,0.87,1.65,1.38,0.40,0.016,表4 国产低品位铁矿粉的化学成分,化学成分,矿名,T,Fe,SiO,2,Al,2,O,3,CaO,MgO,S,P,攀西钒钛铁精粉,51.69,4.83,4.52,2.04,3.16,0.66,TiO,2,12.76,桃冲铁精粉,56.14,7.40,0.66,1.00,1.50,0.18,0.07,梅山铁精粉,52.51,4.89,0.53,4.06,2.42,0.60,0.36,韩旺铁精粉,62.10,10.90,1.30,1.05,0.66,0.049,-,海南铁精粉,59.20,10.55,1.66,1.47,0.71,0.36,0.044,海南富矿粉,53.22,19.50,2.11,0.16,0.21,0.41,0.038,大宝山粉矿,55.40,6.93,1.35,0.05,0.02,-,-,大冶强磁精粉,39.98,19.56,2.79,5.47,3.07,0.243,0.226,云南玉溪粉,55.40,7.63,3.81,0.90,1.64,0.16,LOI9.70,酒钢综合精粉,52.70,10.70,1.46,1.53,2.63,0.315,0.023,2.2 进口铁矿粉的状况,表5 常规进口铁矿粉的化学成分,矿类,化学成分,矿粉,T,Fe,SiO,2,Al,2,O,3,CaO,MgO,S,P,LOI,A,类,矿,里奥多西粉矿,65.70,4.12,0.84,0.05,0.06,0.007,0.030,0.66,卡拉加斯粉,67.50,0.70,0.74,0.01,0.02,0.008,0.036,1.70,MBR,粉矿,67.70,1.38,0.75,0.076,0.06,0.015,0.050,0.70,沙米丘粉,64.81,4.18,0.47,0.026,0.10,0.069,0.043,1.62,印度白兰粉,64.50,2.75,2.48,0.020,0.10,0.010,0.050,2.40,B,类,矿,库利安诺宾粉,63.50,2.76,0.92,0.020,0.07,0.035,0.083,5.25,纽曼粉矿,64.00,3.70,1.95,0.06,0.10,0.015,0.070,2.40,伊朗粉矿,62.01,1.97,0.85,0.06,0.10,0.058,0.056,-,杨迪粉矿,58.33,4.92,1.15,0.110,0.15,0.010,0.036,9.50,南非伊斯科粉,65.00,4.00,1.35,0.10,0.04,0.010,0.060,0.70,卡罗尔湖粉矿,66.80,3.76,0.13,0.390,0.25,0.040,0.004,0.20,C,类,矿,哈默斯利粉,64.00,3.75,2.10,0.10,0.063,0.035,0.062,2.88,罗泊河粉矿,56.84,5.43,2.50,0.260,0.480,0.015,0.051,9.24,印度果阿粉矿,62.21,4.37,8.3,0.050,0.110,0.0056,0.049,5.00,表6 国外低品位铁矿粉的化学成分,化学成分,矿名,T,Fe,SiO,2,Al,2,O,3,CaO,MgO,S,P,LOI,朝鲜精矿粉,59.79,14.31,0.47,0.46,0.73,0.03,0.058,+1.72,南非粉矿,52.50,3.50,4.00,0.50,1.10,0.50,TiO,2,12.0,-,印度粉矿,58.0,17.0,15.-2.50,0.10,0.15,0.005,0.045,1.0,印度高硅粉矿,57.0,10.0,1.5,-,-,0.07,0.07,-,印度粉矿,60,6.0,4.0,-,-,0.08,0.02,-,印度粉矿,57.0,11.0,1.5,-,-,0.02,0.05,-,印度粉矿,52.0,12.0,2.0,-,-,0.02,0.10,-,印度粉矿,50.29,7.19,2.27,0.01,1.00,-,TiO,2,16.18,-,印度粉矿,55.45,17.00,1.50,0.10,0.15,0.02,0.08,新西兰矿粉,57.00,3.80,3.6,1.40,3.50,0.006,0.15,TiO,2,13.0,New man,粉矿,62.00,6.00,3.00,0.02,0.02,0.03,0.08,BHP,Yandi,粉矿,57.00,6.00,1.50,-,-,0.05,0.06,9.00,RoBe,River,57.00,6.00,3.00,-,-,0.05,0.05,9.50,3.对不同品位铁矿石质量的分析,3.1铁矿石品位的价值及冶炼效果,表7 不同品位铁矿石的价值(酸性)4,铁矿石品位(%),综合燃料比,（,kg/t）,渣铁比,(,kg/t),铁矿石价值元/,t,1%铁分价值(元),40,1570,2688,104,2.60,45,1290,2014,25,0.56,50,1063,1470,55,1.10,55,870,1020,137,2.49,60,717,644,218,3.63,65,585,325,300,4.62,表8 全国重点企业高炉入炉矿品位与利用系数和燃料比1,项 目,1999年,2000年,2001年,2002年,入炉矿品位(%),56.25,56.81,57.28,58.18,利用系数(,t/m,3,.d),1.993,2.233,2.337,2.448,燃料比(,kg/t),553,533,530,526,表9 酒钢高炉不同入炉矿品位的冶炼效果,入炉矿,品位(%),SiO,2,含量,(%),渣量,(,kg/t),吨铁用矿量,(,kg/t),降低焦比,(,kg/t),增加产量,(%),54.46,8.29,443,1745,(410),-,56.92,6.53,353,1669,380,6.15,56.92,6.77,361,1669,380,6.15,56.92,7.09,340,1669,380,6.15,57.55,6.58,328,1650,376,7.725,57.44,6.29,319,1640,374,8.70,表10 济钢高炉不同入炉矿品位的冶炼效果5,配进口块矿,名称、配比,入炉矿品位(%),渣量,(,kg/t),降低成本,(元/,t),年降低成本,(万元/年),Newman0,60.57,282.8,Newman5%,60.60,280.4,1.743,749.49,Newman 10%,60.64,277.8,3.667,1576.81,Newman 15%,60.68,275.2,5.582,2400.46,Newman20%,60.72,272.6,7.506,3250.80,Newman25%,60.77,27.00,9.511,4089.73,3.2 铁矿石,SiO,2,含量对高炉冶炼指标的影响：,表11 铁矿石不同,SiO,2,含量对高炉冶炼指标的影响,入炉矿,SiO,2,含量(%),入炉矿品位(%),吨铁矿,石用量,(,kg/t),渣铁比,(,kg/t),渣量增长,比例(%),燃料比,变化,(,kg/t),高炉产量,变化(%),3.5,63,1508,233.5,0,490,0,4.5,60,1583,283.0,+21.2,520,7.5,5.5,57,1667,344.6,+47.5,560,15.0,6.5,54,1759,406.0,+73.9,600,22.5,7.5,51,1863,479,+105.1,650,30.0,表12 高,SiO,2,铁矿石对高炉冶炼指标和经济效益的影响,高,SiO,2,矿配,入比例(%),入炉矿,SiO,2,变化(%),渣量增长,kg/t),入炉矿品,位变化(%),吨铁矿石,用量(,kg/t),燃料比变化(,kg/t),高炉产量变化(%),基准4.5,0,283,60,1583,490,0,T,Fe,55%,15%SiO,2,配10%,6.0,343,59.5,1596.6,500.3,-2.7,15%,SiO,2,配20%,7.5,506.1,59.0,1610.2,528.2,-10.04,15%,SiO,2,配30%,9.0,617.6,58.5,1623.9,547.4,-15.06,15%,SiO,2,配40%,10.5,729.1,58.0,1637.9,592.9,-20.07,3.3 铁矿石,Al,2,O,3,含量对高炉冶炼的影响7,3.4 铁矿石,TiO,2,含量对高炉冶炼的影响,4.结论性意见,由以上分析和讨论，可以得出如下结论性意见：,(1)铁品位低于45%的铁矿石没有冶炼价值，只有铁品位55%的铁矿石才具有一定的冶炼价值。,(2)铁矿石的,SiO,2,含量是高炉渣量的源头，,SiO,2,含量每增加1%，