Vol.28 No.6 张飞等：高炉炉尘中含碳物质来源 .565. 比的公式 4 结论 (1)高炉炉尘中重力灰的粒度主要以74~ 参考文献 297m为主，约占65%，二次灰的粒度主要是以 Antoine G S.Edwin E S.Toxopeus H,et al.High injection 小于149m为主，约占80%.二次灰的粒度满足 rates of coal into the blast furnace.MPT.1994(3):58 [2]杨天钧，刘应书，杨珉.高炉富氧喷煤.北京：科学出版社， 煤相分析对粒度的要求，而重力灰需要将大于 1998 297m的颗粒进行处理后进行岩相分析. [3]马政蜂，吴铿，实庆和，等.煤粉粒度对高炉风口前燃烧性 (2)通过对高炉炉尘的岩相显微和化学成分 能的影响.钢铁，2003,38(7)：35 分析，可以定量给出炉尘中未消耗煤粉的含量，实 [4]吴铿，魏新，张向国，等。高炉喷煤交叉式喷煤双枪的基础 验结果的误差能够满足应用要求 研究.北京科技大学学报，2004,25(6)：515 [5]Ichida M.Orimoto T.Tanaka T,et al.Behavior of pulver- (3)炉尘中的未消耗煤粉颗粒可分成微变原 ized coal ash and physical property of dripping slag under high 煤颗粒、未变形颗粒、变形颗粒和残碳颗粒4种类 pulverized coal injection operation.ISIJ Int,2001,41(2): 型，焦炭颗粒可分成块状结构、类丝碳、流动结构、 325 片状结构和粒状嵌镶结构 [6]Negro P,Petit C.Urvoy A.et al.Characterization of the (4)炉尘中未消耗煤粉表面烧损的比例要比 permeability of the blast furnace lower part//Ironmaking Con- ference Proceedings.Washington.2001:337 焦炭高，不同类型颗粒表面的烧损情况也不相同， [7]斯塔赫E应用煤岩学.杨起，译.北京：冶金工业出版社， 在进行比例计算时要依据烧损的情况进行修正， 1990 依据显微分析的经验，给出了由显微分析结果计 [8]陈鹏.中国煤炭性质、分类和利用.北京：化学工业出版社， 算宝钢高炉喷煤时炉尘中未消耗煤粉碳所占百分 2001 Source of material containing carbon in dust and sludge at BF ZHANG Fei),WU Keng,ZHU Jinming2),XIONG Guolan,ZHANG Jigang), ZHA NG Xinghong 1)Metallurgy and Ecological Engineering School.University of Science and Technology Beijing,Beijing 100083.China 2)Shanghai Baosteel Co.(Group).Shanghai 201900.China ABSTRACT About 80%of particles in sludge were smaller than 149m in diameter at 1BF in Baosteel of China and the particle distribution was composed of two normal distribution curves.While approximately 65%of particles in dust were about 74297m in diameter and the particle dist ribution was composed of three normal distribution curves.Different microstructures of unused pulverized coal and coke in dust were found through petrographic microscopic analysis.According to the utilized carbon degree of unused pulver- ized coal and coke,an equation of the ratio of unused pulverized coal to coke in Changcun industrial experi- ment dust was proposed by means of the microscopic analysis results. KEY WORDS iron making in BF;pulverized coal injection (PCI);dust;carbonaceous matter4 结论 （1）高炉炉尘中重力灰的粒度主要以74～ 297μm 为主‚约占65％‚二次灰的粒度主要是以 小于149μm 为主‚约占80％．二次灰的粒度满足 煤相分析对粒度的要求‚而重力灰需要将大于 297μm 的颗粒进行处理后进行岩相分析． （2）通过对高炉炉尘的岩相显微和化学成分 分析‚可以定量给出炉尘中未消耗煤粉的含量‚实 验结果的误差能够满足应用要求． （3）炉尘中的未消耗煤粉颗粒可分成微变原 煤颗粒、未变形颗粒、变形颗粒和残碳颗粒4种类 型‚焦炭颗粒可分成块状结构、类丝碳、流动结构、 片状结构和粒状嵌镶结构． （4）炉尘中未消耗煤粉表面烧损的比例要比 焦炭高‚不同类型颗粒表面的烧损情况也不相同‚ 在进行比例计算时要依据烧损的情况进行修正． 依据显微分析的经验‚给出了由显微分析结果计 算宝钢高炉喷煤时炉尘中未消耗煤粉碳所占百分 比的公式． 参 考 文 献 ［1］ Antoine G S‚Edwin E S‚Toxopeus H‚et al．High injection rates of coal into the blast furnace．MPT‚1994（3）：58 ［2］ 杨天钧‚刘应书‚杨珉．高炉富氧喷煤．北京：科学出版社‚ 1998 ［3］ 马政峰‚吴铿‚窦庆和‚等．煤粉粒度对高炉风口前燃烧性 能的影响．钢铁‚2003‚38（7）：35 ［4］ 吴铿‚魏新‚张向国‚等．高炉喷煤交叉式喷煤双枪的基础 研究．北京科技大学学报‚2004‚25（6）：515 ［5］ Ichida M‚Orimoto T‚Tanaka T‚et al．Behavior of pulver￾ized coal ash and physical property of dripping slag under high pulverized coal injection operation．ISIJ Int‚2001‚41（2）： 325 ［6］ Negro P‚Petit C‚Urvoy A‚et al．Characterization of the permeability of the blast furnace lower part∥Ironmaking Con￾ference Proceedings．Washington‚2001：337 ［7］ 斯塔赫 E．应用煤岩学．杨起‚译．北京：冶金工业出版社‚ 1990 ［8］ 陈鹏．中国煤炭性质、分类和利用．北京：化学工业出版社‚ 2001 Source of material containing carbon in dust and sludge at BF ZHA NG Fei 1）‚W U Keng 1）‚ZHU Jinming 2）‚XIONG Guolan 1）‚ZHA NG Jigang 1）‚ ZHA NG Xinghong 1） 1） Metallurgy and Ecological Engineering School‚University of Science and Technology Beijing‚Beijing100083‚China 2） Shanghai Baosteel Co．（Group）‚Shanghai201900‚China ABSTRACT About 80％ of particles in sludge were smaller than149μm in diameter at1＃ BF in Baosteel of China and the particle distribution was composed of two normal distribution curves．While approximately 65％ of particles in dust were about 74～297μm in diameter and the particle distribution was composed of three normal distribution curves．Different microstructures of unused pulverized coal and coke in dust were found through petrographic microscopic analysis．According to the utilized carbon degree of unused pulver￾ized coal and coke‚an equation of the ratio of unused pulverized coal to coke in Changcun industrial experi￾ment dust was proposed by means of the microscopic analysis results． KEY WORDS iron-making in BF；pulverized coal injection （PCI）；dust；carbonaceous matter Vol．28No．6 张飞等： 高炉炉尘中含碳物质来源 ·565·