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对4号高炉炉况失常的原因、机理及处理过程进行了总结分析,认为铁中〔Ti〕、渣中(Al2O3)异常升高是炉况失常的主要原因,采用锰矿和净焦洗炉、堵风口恢复、疏松中心气流、控制炉温、碱度、炉外出净渣铁等措施,取得了较好效果。
The cause, mechanism and treatment process of furnace failure in No.4 blast furnace are summarized and analyzed. It is considered that the abnormal increase of iron (Ti) and slag (Al2O3) is the main reason of furnace failure. Manganese ore and net coke oven, Plugging outlet recovery, loose center airflow, control of furnace temperature, alkalinity, furnace out of iron slag iron and other measures, and achieved good results.