Method for reducing NOX emission in sintering flue gas

The invention discloses a method for reducing the emission amount of NOX in sintering flue gas. The method mainly solves the technical problem that the emission amount of NOX in existing sintering flue gas is high. According to the technical scheme, the method for reducing the NOX emission in the sintering flue gas comprises the following steps: 1) ore blending: sintering ore blending raw materials comprise the following components in percentage by mass: 3-8% of high pyrite powder, 66-75% of hematite rich ore powder, 4.0-5.0% of solid fuel, 8-15% of the sum of quick lime, dolomite and limestone, and 5-10% of sintering return ore; 2) uniformly mixing and granulating; (3) air draft sintering is conducted, finished sinter is obtained after sintering is completed, and sampling is conducted to detect the drum strength and the sulfur content of the sinter; and 4) performing desulfurization and denitrification treatment on the sintering flue gas. The mass concentration of NOx in the sintering flue gas subjected to i