利用冷却板修复铜冷却壁技术分析

铜冷却壁水管损坏时热面温度急剧升高，加剧冷却壁烧损。此时往往采用冷却柱恢复冷却能力，冷却柱为“点”冷却，冷却面积小且不易造衬。而利用冷却板代替损坏部位的冷却壁，容易形成平滑操作炉型，有利于高炉顺行。建立冷却板棋盘式布局模型，从冷却板间距、尺寸、冷却水速等方面分析炉壳表面以及冷却壁冷、热面的冷却中心温度，结果表明当煤气温度1500℃时，冷却间距从200mm增大到600mm，炉壳外表面冷却中心温度增高约230℃；冷却板水速从1m/s升至3m/s,炉壳外表面冷却中心的温度降低50℃左右；并与冷却柱比较发现，冷却板冷却效果明显强于冷却柱。

Analysis of Cooling Plate to Recovering Cooling Capacity of Copper Stave

The temperature of copper stave rises rapidly when the cooling pipes are broken and damaged pipes make the stave damaged quickly. The measure which is always adopted is applying cooling column to recover cooling capacity of stave. The mode of cooling column is point cooling. The cooling area is small and it’s difficult to form the slag skull. However this is easy for cooling plate to form smooth operating profile instead of the broken stave and it’s benefit for stability of blast furnace. The model of cooling plates by the chessboard type is established and the centre temperature of shell furnace, stave hot face and cold face are analyzed from different distances, sizes and water velocities of cooling plate. It turns out that when gas temperature is 1500℃，cooling centre temperature increases about 230℃ while the interval is changed from 200mm to 600mm and cooling centre temperature reduces about 50℃ when water velocity increases 1m/s to 3m/s.The cooling plate is compared with cooling column and it is found that the cooling capacity of plate is better.