烧结大烟道烟气循环利用合理的循环烧结面积控制研究  

Research on reasonable control of recirculated sintering area for recycling of sintering windmain flue gas

作　　者：潘文[1,2] 焦光武[3] 高新洲[3] 赵志星[1,2] 赵俊花[3] 张志东[3] 

机构地区：[1]绿色可循环钢铁流程北京市重点试验室,北京100043 [2]首钢技术研究院,北京100043 [3]首钢迁钢公司,河北迁安064400

出　　处：《烧结球团》2016年第4期49-53,共5页Sintering and Pelletizing

基　　金：绿色可循环钢铁流程北京市重点实验室2015年度科技创新基地培育与发展专项项目(z151100001615037)

摘　　要：研究了利用烧结大烟道废气进行热风烧结时合理的循环烧结面积,试验采用自主开发的加热炉,考察了不同热风保持时间对烧结过程参数、烧结矿质量以及烧结技术经济指标的影响。试验结果表明,热风保持时间在6 min和8 min时各项指标均达到较好水平,建议废气循环烧结面积采用总烧结面积的23%~35%。基于上述试验结果,对迁钢360 m^2烧结机实施了烧结大烟道废气循环改造,改造后废气循环烧结面积占总烧结面积的22%,烧结矿质量明显改善,平均粒径提高2.25 mm,固体燃耗降低2.85 kg/t。The reasonable recirculated sintering area when utilizing the sintering windmain waste gas for hot air sintering was studied, by adopting the independently developed heating furnace for the test, the influences of different hot air retaining time on sintering process parameters, sinter quality and sintering technical and economic indexes were investigated. The test results show that,all the indexes can reach good level when the hot air retaining time is 6 min and 8 min, and it is suggested that the waste gas recirculated sintering area should be 23% - 35% of the total sintering area. Based on the abovementioned test results, the ＇sintering windmain waste gas circulation reconstruction was implemented for Qian＇ an Steel 360 m^2 sinter machine,the waste gas recirculated sintering area after reconstruction accounted for 22% of the total sintering area, the sinter quality was significant improved, the mean size of sinter was increased by 2. 25 mm and the solid fuel consumption was decreased by 2. 85 kg/t.

关 键 词：热风烧结 大烟道废气 循环利用 循环烧结面积 

分 类 号：TF046.4[冶金工程—冶金物理化学] X706[环境科学与工程—环境工程]