高Al_2O_3炉渣对高炉生产的影响

Influence of Slag with High Content of Al_2O_3 on Blast Furnace Production

高炉炉渣中Al2O3含量偏高易造成炉渣粘度增高,流动性变差,引起炉墙粘结与炉缸堆积,直接影响高炉炉况。对此应制定科学的操作方法与操作方针,适当提高炉温水平,降低炉渣碱度,使炉渣保持良好的流动性与稳定性,下部调剂应提高鼓风动能,进一步活跃炉缸,同时要加强入炉原料管理,减少入炉粉末,采用强度和高温冶金性能好的焦炭,才能保证炉况顺行,取得良好的冶炼指标。

High content of Al2O3 in BF slag can cause high slag viscosity and inferior slag fluidity, which results in BF wall accretion and hearth accumulation,and thus directly affecting the furnace conditions. In order to ensure smooth conditions in furnace and achieve fine smelting indices, scientific operating methods and policy should be adopted, such as controlling furnace temperature and slag basicity, improving blast momentum, strengthening chargeable materials and using high quality coke, etc.