METHOD OPENING tap-hole OF blast-furnace

摘要

The invention relates to the blast-furnace production, in particular to opening tap-holes of blast-furnaces. A method includes formation of the tap-hole canal by deleting of metallic bar from the taphole mix. Before deleting of the bar it is drilled off in the direction of cast-iron melt with a core tool. Freeing of metallic bar is carried out at drawing out of the core tool. Technical result is decreasing of dynamic and static loads on the tap-hole of the blast-furnace, formation of the bore hole with unbroken and strong walls.