PURPOSE: To remove slag easily and surely by throwing a substance principally comprising calcium hydroxide onto slag floating on the molten surface and scratching off the solidified slag.
CONSTITUTION: When molten iron 13 is injected from a blast furnace into a charging pot 11 from above a blast pot 11, stag 14 floats on the iron 13. Preferably, 0.5-1.0 kg of staked lime per 1 ton of molten iron 13 is then thrown into the pot 11 in order to solidify the slag. The pot 11 is inclined and the flow-out port 12 is set substantially horizontal and a scratching rod 16 is inserted into a molten iron pot. A scratching part 18 at the forward end is immersed into the slag and the rod 16 is pulled in the direction 17 thus scratching out the solidified slag 14.
TANABE HARUYOSHI
FUKUMI JUNICHI
KATO TAKASHI
