摘要:
The invention relates to the operation of a hot stove for supplying hot blast to a blast furnace (22), whereby the hot stove is heated during an on-gas phase and is thereafter used to heat cold blast and to supply hot blast to a blast furnace (22) during its on-blast phase. According to the invention, pressurized gas supplied by an air separation unit (23) is accumulated in buffer means (25) and the accumulated pressurized gas is used in the pressurization of the hot stove between the on-gas phase and the on-blast phase.