Waste gas recirculation type iron ore sintering apparatus and the method by using LNG

摘要

The present invention relates to an exhaust gas circulating device and a iron ore sintering method using the LNG to reduce the generation of pollution materials used and the coke by using the LNG in the clean gas during sintering of iron ore operation.; The invention exhaust gas comprising: a main exhausting pipe sends the sintering machine balance and, provided in the sintering machine balance lower and upwind for sucking the air necessary for sintering reaction, the air sucked through the upwind to the electrostatic precipitator Circulation in the iron ore sintering apparatus, wherein the main exhausting pipe comprises a first main exhausting tube, the second main exhausting pipe, a is divided into three main exhausting pipe, wherein the exhaust gas of the second main exhausting pipe of the second electric dust collector and a second suction is circulated by the blower is supplied to the flue-gas collection hoods installed in the sintering machine balance fold portion, and to the sintering machine balance class portion characterized in that the LNG collection hoods installed.; In addition, the present invention is that the coke is ignited and a 2.9-3.2% formulation an added material, oxygen is run through the upwind as the incubation condition as 21-25% injecting LNG than 1% in the air to be sucked into the sintered layer It characterized.