High-quality and high-efficiency sintering process with low NOx emission

• Main Authors: LI ZHIQUAN, WANG JIANJUN, XIAO WEIZHAN, JIANG HAIFENG, HAO JIANGHUA
• Format: Patent
• Language: Chinese; English
• Published: 21.01.2022
• Subjects: CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; METALLURGY; PRETREATMENT OF RAW MATERIALS; PRODUCTION AND REFINING OF METALS; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The invention discloses a high-quality and high-efficiency sintering process with low NOx emission. The high-quality and high-efficiency sintering process comprises the following steps of S1, preparing and crushing sintering fuel; S2, classifying and screening the crushed fuel, and classifying and warehousing for later use; S3, spraying a composite spraying agent into a sintering machine; S4, burdening by the sintering machine according to low carbon; S5, putting the fuel into the sintering machine to be ignited; and S6, taking the sintered sinter out, wherein a sinter bed is 850 mm or above, the air leakage rate of the sintering machine ranges from 0% to 30%, a trolley of the sintering machine is designed to be a sealing cover and a dust removal system, the ignition temperature ranges from 950 DEG C to 1050 DEG C, and the ignition time ranges from 45 seconds to 50 seconds. Through the improvement of the fuel, in the steelmaking process of the steel plant, the nitrogen and oxygen compounds emitted by combusti