氯元素在高炉软熔滴落带分配规律  

Distribution law of Cl in soft-melting zone of blast furnace

作　　者：陈树军[1,2] 吕庆[1,3] 刘小杰 张淑会 郄亚娜 兰臣臣 

机构地区：[1]东北大学冶金学院,辽宁沈阳110004 [2]河北钢铁集团承德分公司,河北承德067000 [3]华北理工大学冶金与能源学院,河北唐山063009

出　　处：《钢铁研究学报》2017年第3期175-179,共5页Journal of Iron and Steel Research

基　　金：国家自然科学基金重点支持联合基金资助项目(U1360205);河北省钢铁联合基金资助项目(E2015209073)

摘　　要：为了解氯元素在软熔滴落带的分配规律,对高炉内氯元素的反应行为进行热力学分析,同时研究了氯元素入炉量和炉料碱度对氯元素在高炉软熔滴落带渣、铁及焦炭中分配规律的影响。结果表明:随着入炉氯元素含量的增加,软熔滴落带铁和渣中的氯元素含量均不断增加,且渣中氯元素含量的增加幅度大于铁中氯元素含量的增加幅度。随着入炉氯元素含量的增加,软熔带总特征值(S值)逐渐减小,透气性逐渐增强,焦炭中的氯元素含量逐渐降低。随着入炉炉料碱度的增加,软熔滴落带铁中的氯元素含量无明显变化,渣中的氯元素含量增加,焦炭中的氯元素含量的大小主要受软熔带透气性的影响。In order to obtain the distribution law of Cl in soft-melting zone, the thermodynamics of Cl reactions in blast furnace were analyzed, and the effects of basicity and Clcontent in the burden on the distribution law of Cl in the iron, slag, and coke were studied. The results show that with increasing the Cl content in the burden, the Cl content in the slag and iron of soft-melting zone rises significantly. Notably, the amount of increasing of Cl content in the slag is more obvious than that in the iron. With increasing Cl content in the burden, the total characteristic droplet value （S） of soft-melting zone reduces gradually, the permeability improves, and the CI content in the coke decreases. In addition, with increasing the basicity of burden, the Cl content in iron doesn＇t change obviously while Cl content in the slag rises. Cl content in in the coke is mainly affected by the permeability of soft-melting zone.

关 键 词：氯元素 高炉 软熔滴落带 分配规律 

分 类 号：TF53[冶金工程—钢铁冶金]