.680 北京科技大学学报 2006年第7期 [8]徐万仁，吴望，张龙来，等.大高炉喷煤时煤粉利用率的研[9]张飞，吴铿，朱锦明，等.高炉炉尘中含碳物质来源，北京科 究.钢铁，2006,41(4)：10 技大学学报，2006,28(6)：561 Utilization ratio of pulverized Changcun lean coal in large amount of pulverized coal injection in a blast furnace XIA Zhuhai,WU Keng),ZHU Jinming2).ZHANG Haibin,YU Boxun,ZHANG Jigang) 1)Metallurgical and Ecological Engineering School.University of Science and Technology Beijing,Beijing 100083.China 2)Shanghai Baosteel Group Co..Shanghai 200941,China ABSTRACI The carbon amount of unused pulverized coal in dust and sludge during the industrial experi- ment of Changcun coal in Baosteel's1 blast furnace (BF)was investigated by microscopic and chemical analysis.The carbon amounts of sludge and dust and of unused coal were determined in the condition that the mass fraction of Changeun coal was about 200.The utilization ratio of pulverized coal was cal- culated in different conditions of pulverized coal injection in Baosteel's BF. KEY WORDS iron making in blast furnace (BF);pulverized coal injection;utilization ratio;dust and sludge［8］ 徐万仁‚吴铿‚张龙来‚等．大高炉喷煤时煤粉利用率的研 究．钢铁‚2006‚41（4）：10 ［9］ 张飞‚吴铿‚朱锦明‚等．高炉炉尘中含碳物质来源．北京科 技大学学报‚2006‚28（6）：561 Utilization ratio of pulverized Changcun lean coal in large amount of pulverized coal injection in a blast furnace XIA Zhuhai 1）‚W U Keng 1）‚ZHU Jinming 2）‚ZHA NG Haibin 1）‚Y U Boxun 1）‚ZHA NG Jigang 1） 1） Metallurgical and Ecological Engineering School‚University of Science and Technology Beijing‚Beijing100083‚China 2） Shanghai Baosteel Group Co．‚Shanghai200941‚China ABSTRACT The carbon amount of unused pulverized coal in dust and sludge during the industrial experi￾ment of Changcun coal in Baosteel’s1＃ blast furnace （BF） was investigated by microscopic and chemical analysis．The carbon amounts of sludge and dust and of unused coal were determined in the condition that the mass fraction of Changcun coal was about20％～40％．The utilization ratio of pulverized coal was cal￾culated in different conditions of pulverized coal injection in Baosteel’s BF． KEY WORDS iron-making in blast furnace （BF）；pulverized coal injection；utilization ratio；dust and sludge ·680· 北 京 科 技 大 学 学 报 2006年第7期