节能技术与应用52节能ENERGYCONSERVATIONNO.012023360m2烧结机的余热高效利用技术改造李靖1景涛1张思平2章裕东1（1.中冶长天国际工程有限责任公司，湖南长沙410205；2.新余钢铁集团有限公司，江西新余338000）摘要：针对新钢360m2烧结环冷机中低温烟气外排造成的余能浪费及环境污染等问题，进行有动力热风烧结余热高效利用技术改造。在烧结机料面上引入热风，代替传统的自然冷风参与烧结过程，从而降低固体燃耗，改善环冷机周边环境，提高烧结矿品质。结果显示：余热高效利用技术可以有效减少烧结矿环冷过程中热废气的无组织排放，年处理热废气排放量约25800万m3，改善了烧结矿冶金性能指标。烧结利用系数提高0.01~0.02t/(m2·h)，固体燃耗降低2.33~2.35kg/t，烧结矿转鼓强度提高0.50%~0.54%，筛分指数降低0.12%~0.14%，FeO含量降低0.32%~0.34%。关键词：有动力热风烧结技术；环冷机；低温热废气中图分类号：TF046文献标识码：A文章编号：1004-7948（2023）01-0052-04doi：10.3969/j.issn.1004-7948.2023.01.014Retrofitoftheefficientutilizationofwasteheatinthe360m2sinteringmachineLIJingJINGTaoZHANGSi-pingZHANGYu-dongAbstract：Inviewoftheproblemsofwasteofresidualenergyandenvironmentalpollutioncausedbythelowtemperaturefluegasdischargefromthe360m2sinteringringcoolerofXingangSteel,thetechnicaltransformationofhigh-efficientutilizationofwasteheatbypoweredhotairsinteringwascarriedout.Thehotairisintroducedintothesintersurfacetoparticipateinthesinteringprocessinsteadofthetraditionalnaturalcoldair,soastoreducethesolidfuelconsumption,improvethesurroundingenvironmentofthecircularcoolerandimprovethequalityofsinter.Theresultshowsthattheefficientutilizationtechnologyofwasteheatcaneffectivelyreducethefugitiveemissionofhotwastegasintheringcoolingprocessofsinter,andtheannualemissionofhotwastegastreatmentisabout258millionm3,whichimprovesthemetallurgicalperformanceindexofsinter.Thesinteringutilizationcoefficient(productivity)increasesdby0.01~0.02t/(m2·h),thesolidconsumptionreducesdby2.33~2.35kg/t,thetumblerstrengthofsinterimprovesdby0.50%~0.54%,thescreeningindexdecreasesdby0.12%~0.14%,andtheFeOcontentreducesdby0.32%~0.34%.Keywords:poweredhotairsinteringtechn...
