Modified fuel for reducing NOx emission in sintering process and preparation method thereof

The invention discloses a modified fuel for reducing NOx emission in a sintering process and a preparation method thereof, and relates to the technical field of sintering pollutant emission reduction.The modified fuel comprises dried quick lime and a fuel, and quick lime accounts for 0.25%-5% of the total mass of the fuel. During preparation, small-particle-size fuel particles and a small amountof quick lime particles are fully dry-mixed to prepare the modified fuel. After the modified fuel is added to a sintering material, the reduction of NOx in the fuel can be effectively promoted in thesintering process, the emission amount of NOx is effectively reduced, and the high-efficiency emission reduction of NOx in the iron ore sintering process is achieved. 本发明公开了种用于烧结过程中减排NOx的改性燃料及其制备方法，涉及烧结污染物减排技术领域。本发明的改性燃料包括干燥后的生石灰和燃料，且生石灰占燃料总质量的0.25％-5％，制备过程中将小粒径的燃料颗粒和少量的生石灰颗粒进行充分干混，制备得到上述改性燃料。本发明的改性燃料加入烧结料后，在烧结过程中可以有效促进燃料中NOx的还原，从而有效降低NOx排放量，进而实现铁矿烧结过程NOx的高效减排。