Method for heating furnace cylinder during damping down of blast furnace
A heating furnace and blast furnace technology, which is applied to blast furnaces, blast furnace details, blast furnace parts, etc., can solve the problems of inability to achieve flow, the temperature of newly generated slag and iron, and the porosity of blast furnace hearths. The effect of making up for heat loss and reducing recovery time
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[0069] In this embodiment, the hearth is heated in the later stage of the blast furnace suffocation through the following steps: 24 hours before the blast furnace is opened and air is sent, the iron hole is drilled with a 100mm diameter variable diameter drill, drilled until the coke is seen, and then burned with oxygen Burn out the space from the iron hole to the front end of the iron hole to obtain a 100mm diameter iron hole; from the position of the oxygen lance at 2500mm from the end of the oxygen lance head to the position 500mm from the end of the oxygen lance head, use 14# lead wire in the oxygen Wrap 5 turns on the gun, and the interval between two adjacent turns of lead wire is 500mm; from the position of the oxygen lance at 2500mm from the end of the oxygen lance head to the position of 500mm from the end of the oxygen lance head, use 5mm asbestos The rope is wound on the oxygen lance for 5 sections, and the head spacing of each two adjacent asbestos rope winding secti...
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