The flues 1#~4# are seriously damaged on the PS and CS of battery 6# of Masteel.Re-bricklaying by uncovering the oven roof for the middle flues (up to 6# flue from the PS) is adopted.Technical requirements and operation key points during the whole maintenance is introduced.This repair achieves good result, which can not only effectively extend the service life of the coke oven, but also play a directive role in uncovering the oven roof for the middle flues of 6 m battery.

Middle flues, Re-bricklaying by uncovering oven roof, Flue temperature control