Hot-blast stove high-temperature waste gas recycling method

The invention discloses a hot-blast stove high-temperature waste gas recycling method. The method comprises the following steps that when a first hot-blast stove is in overhaul and medium repair periods, the first hot-blast stove is shut down, no high-temperature waste gas is discharged from a first high-temperature waste gas pipeline, at the moment, a first common regulating valve is opened, a first high-temperature induced draft fan is started, a first flue gas furnace inlet regulating valve is opened, so that a part of high-temperature waste gas generated by a second hot-blast stove passesthrough a first common pipeline and enters a mixing chamber of a first flue gas furnace under the air draft action of the first high-temperature induced draft fan. According to the method, by arranging the first common pipeline, the first common regulating valve, a second common pipeline and a second common regulating valve, high-temperature waste gas of the hot-blast stove and high-temperature drying gas of the flue gas