CORE ACTIVATION METHOD OF BLAST FURNACE

摘要

PURPOSE: A method for activating core of blast furnace is achieved by providing air inside a cokes layer of the core after resting period of blast furnace and before re-blowing air into tuyere. CONSTITUTION: A method for activating core of blast furnace is performed by using a blast furnace with specific structure comprising a pipe communicated with an exterior air supplying part through a tuyere. The pipe is passed through a surface of the cokes in the core to provide air inside the cokes layer. The pipe is at least 1500mm in length and 40mm or more in diameter. Also, the pipe has multiple through holes having about 10-20mm in diameter at 30-50% of area apart from its front end. By this structure, air is provided inside the cokes layer after resting period of the furnace and before re-blowing air into the tuyere.