济钢3座1750m^3高炉炉缸侵蚀情况对比分析

Hearth Erosion Comparative Analysis of Three 1750 m^3 Blast Furnaces in Jinan Steel

对济钢3座1 750 m^3高炉一代炉役炉缸侵蚀情况进行了分析,扒炉过程中对炭砖残存厚度或重点部位炭砖残存厚度进行了实际测量,结果表明,3座高炉侵蚀最严重的位置都在铁口方向,但3座高炉炉缸的侵蚀情况不同,最大区别在于,2~#、3~#高炉都有较严重的环裂,并且环裂位置基本相同。分析认为,环裂与炭砖材质关系不大,与设计结构有关。提出可否降低炉底冷却水流量而增加炉缸冷却水流量以延缓炉缸侧壁侵蚀速度及改进炉缸结构设计等进一步探讨的问题。

The hearth erosion of three 1 750 m^3 blast furnaces campaign life was analyzed. The carbon blocks remaining thickness or key parts of carbon bricks remaining thickness has been measured during the raking out furnace. The results showed that erosion worst position of three furnaces was in the direction of taphole, but hearth erosion of three furnaces is different. The biggest difference is that the blast furnace No.2 and No.3 have a more serious ring crack, and the ring crack is in the same position. Analysts believe that the ring crack with the carbon brick material has little relationship with the design structure. It proposed that the possibility of reducing the cooling water flow in bottom and increasing in hearth to delay hearth sidewall erosion speed, and improvement of hearth structure design to be further explored.