稳定500 m^(2)烧结机混合料水分生产实践

Production Practices on Stabilizing Moisture of Mixture for 500 m^(2) Sintering Machine

混合料水分的稳定性直接关系烧结的制粒效果及烧结过程传热速度,影响烧结矿的质量指标。通过对包钢500 m^(2)烧结机各种原燃料的水分及影响混合料水分的因素进行全面分析,发现影响混合料水分稳定性的主要因素为铁料水分、配料过程及除尘灰、冷返矿添加等。通过对各种铁料水分开展生产过程监控及对生产工艺调整优化,制定相应的生产操作方法及设备技改等措施,混合料水分稳定性明显提高,烧结机机尾黑色管道减少,成品烧结矿碱度合格率、FeO稳定率、转鼓强度合格率、平均粒径合格率等指标同比提高。

The stability of moisture of mixture is directly related to the granulation effect of sintering and heat transfer rate in sintering process so that the quality index of sinter is affected.It is found out that the main factors influencing stability of moisture of mixture include the moisture of iron charge,blending process as well as addition of fly ash and cold return fine through the comprehensive analysis on moisture of each crude fuel for 500 m^(2) sintering machine of Baotou Steel and factors influencing moisture of mixture.The stability of moisture of mixture is obviously improved and black pipes at sintering machine tail are reduced through producing process monitor and control of moisture of each iron charge,adjusting and optimizing production technologies as well as formulating corresponding measures such as production and operation methods and technical improvement of equipment so that such indexes as the qualified rate of alkalinity for finished sinter,stability of FeO,qualified rates of drum strength and average particle size are with year-on-year increase.