Basic oxygen steel-making with off gas preheating - in dual furnace operation using ducting which permits heat conservation

摘要

Dual furnace operation of a basic oxygen steel making process comprises using one furnace as the refining furnace and the other furnace as the pre-heating furnace. Off-gas is directed form the refining furnace via ducting and burnt within the preheating furnace to provide heat energy. The ducting comprises a tube section having the shape of an inverted J.