熔剂外裹强化微细精矿粉烧结技术  

Sintering technology of superfine concentrate enhanced by flux coating

作　　者：贺淑珍[1] 冯焕林 史永林[1] 李强[2] HE Shu-zhen;FENG Huan-lin;SHI Yong-lin;LI Qiang(Technology Center,Taiyuan Iron and Steel（Group）Co.,Ltd.,Taiyuan 030003,Shanxi,China;Ironmaking Plant,Taiyuan Iron and Steel（Group）Co.,Ltd.,Taiyuan 030003,Shanxi,China)

机构地区：[1]山西太钢不锈钢股份有限公司技术中心,山西太原030003 [2]山西山西太钢不锈钢股份有限公司炼铁厂,山西太原030003

出　　处：《钢铁研究学报》2018年第8期610-617,共8页Journal of Iron and Steel Research

基　　金：国家自然科学基金资助项目(51304245)

摘　　要：微细精矿粉烧结具有使烧结料层透气性恶化、氧化性气氛差、烧结返矿率高、产量和质量指标变差、燃料消耗增加等问题。为了使微细精矿粉烧结的烧结矿产量和质量指标得到提升,满足超大型高炉的生产需要,进行了外配熔剂、燃料以强化烧结的实验研究。实验结果获得了生石灰、石灰石与焦粉外配的适宜比例,并对外配石灰石适宜粒度进行了选择优化,同时进行工业性生产试验,与实验室结果相近。优化的原料配比使烧结矿整体指标得到了改善,固体燃料消耗降低,有助于烧结节能减排。The fine ore sintering has problems such as deteriorated permeability of the sinter layer,poor oxidizing atmosphere,high sinter return rate,poor productivity and quality indexes,and increased fuel consumption.In order to increase the quality index of the sintered ore fines of the fine ore fines,and to meet the production needs of the ultra-large blast furnaces,experimental studies were carried out to enhance the sintering with external fluxes and fuels.Proper individual addition proportions of lime,limestone and coke were obtained by test trials.The feasible grain size of individual added limestone was optimized.The industrial production test achieved the similar result comparing to the outcome of the pilot trial.Both the sinter productivity and quality were improved,fuel consumption decreased,energy and emission reduced.

关 键 词：烧结 熔剂外配 燃料外配 质量指标 节能减排 

分 类 号：TF046.4[冶金工程—冶金物理化学]