Low-temperature tail gas afterheat utilization device of slag micro powder system

• Main Authors: LI RUILI, XU ZHI, LIU YONGFENG, SUN YONGNING, WANG HONGBO, GAO YOULIANG
• Format: Patent
• Language: English
• Published: 22.07.2015
• Subjects: CRUSHING, PULVERISING, OR DISINTEGRATING; CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN; PERFORMING OPERATIONS; PREPARATORY TREATMENT OF GRAIN FOR MILLING; TRANSPORTING

The utility model discloses a low-temperature tail gas afterheat utilization device of a slag micro powder system. The low-temperature tail gas afterheat utilization device comprises a hot blast furnace, a slag mill, a dust collector, an exhaust fan and a chimney, wherein the hot blast furnace is connected with an air inlet of the slag mill through a high-temperature flue gas pipeline, a discharge opening of the slag mill is connected with a feed opening of the dust collector, the exhaust fan is arranged at an air outlet of the dust collector, and is connected with the chimney through a tail gas exhaust pipeline; an air mixing chamber is arranged on the high-temperature flue gas pipeline, and the air mixing chamber is connected with the tail gas exhaust pipeline through a circulating air pipeline. According to the low-temperature tail gas afterheat utilization device disclosed by the utility model, the air mixing chamber is arranged on the high-temperature flue gas pipeline from the hot blast furnace to the slag mill to enable the exhaust fan to play the role of a circulating blower, so as to introduce 60-70% of low temperature tail gas of the slag micro powder system into the air mixing chamber, the low temperature tail gas is uniformly mixed with high-temperature flue gas provided by the hot blast furnace in the air mixing chamber and enters the slag mill, and thus the purpose of saving the fuel consumption of the hot blast furnace is fulfilled.