During the operation of 5#blast furnace in Jiusteel Hongxing Ironmaking Plant,it was found that the water tem-perature difference of some cooling walls was high,and the corresponding water pipe flow did not change,and the cooling wall water pipes were found to be intact after the blast furnace was shut down.In order to save the investment of blast fur-nace overhaul and shorten the overhaul time,a method of stacked welding was developed to fill and repair the exposed water pipes of the wear mother of the cooling walls,and semi-dry spraying was adopted after repair.It can effectively protect the embedded water pipe of the cooling wall,extend the service life of the cooling wall parent and water pipe,and ensure the safe and stable operation of the blast furnace.
blast furnace overhaulcooling wall parent repairwelding filling methodstack repair methodextend the life of the cooling wall
维普
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