材料期刊网

通过太钢2座4350 m3高炉生产、操作炉型监控和维护的实践，认识到高炉上下部操作炉型之间有密切的相互作用关系，其对炉缸寿命有一定的影响。高炉上部的操作炉型受到炉腹煤气量、炉身部位耐火材料的选择以及炉身冷却水流向的影响。适当的炉腹煤气量、减少冷却板与砖衬间可能形成的窜气通道、冷却水横向分段、分区冷却有助于形成合理的上部操作炉型。炉身操作炉型与渣皮厚度具有相互作用关系，风口以上操作炉型对炉缸炉底的侵蚀和结厚也存在相互作用关系。通过维持炉芯死焦堆透气透液性、高炉炉身硬质压入以及钒钛矿护炉等措施，维持合理的上、下部操作炉型，改善了炉况顺行和操作指标，同时减缓炉缸侧壁的侵蚀。

Based on production, operational furnace profiles monitoring and maintenance of two blast furnaces (BFs) with volume of 4 350 m3 in TISCO, it was found that there was the interaction between upper and lower operational furnace profiles. What’s more, it had an influence on hearth life. The upper operational furnace profile was affected by bosh gas volume, shaft refractory selection and flow direction of shaft cooling water. It was helpful to formed reasonable upper fur-nace profile by appropriate bosh gas volume, decreased gas channel between cooling plates and lining bricks and division-al cooling of horizontal shaft cooling water. There was the interaction between shaft middle operational furnace profile and thickness of skull. The operational furnace profile above tuyere also had the interaction with erosion and accretion of hearth bottom. In order to improve and maintain reasonable operational furnace profiles, the breathability and permeability of deadman should be maintained. The hard extruding repairing and furnace protection of schreyerite could also be uti-lized. Therefore, The operation indicators of furnace condition could be improved and the hearth erosion could be con-strained by above measures.For the long life of hearth bottom, some measures are taken including the design, material se-lection and masonry of hearth bottom based on the new.