一种烟气循环的铁矿烧结方法
By using metallurgical solid waste and optimizing flue gas recirculation during the sintering process, the problem of insufficient oxygen balance in sintering flue gas recirculation was solved, achieving high-proportion flue gas recirculation and efficient energy saving and emission reduction, thereby improving the quality and environmental performance of sintered minerals.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- 武汉钢铁有限公司
- Filing Date
- 2023-12-07
- Publication Date
- 2026-07-17
AI Technical Summary
In existing sintering flue gas recirculation processes, when the proportion of flue gas recirculation is too high, the oxygen balance cannot meet the combustion and oxidation requirements of the sintering process, resulting in incomplete fuel combustion, which affects the quality of sintered minerals and the energy-saving and emission-reduction effects.
Metallurgical solid waste is used as sintering raw materials, especially iron oxide scale, steel roll scale, and converter OG sludge containing a set FeO content. The pre-treated circulating flue gas participates in the sintering process, optimizing the flue gas circulation mode and the structure of sintering raw materials, increasing the flue gas circulation ratio and reducing oxygen consumption.
While ensuring the quality of sintered ore, the proportion of flue gas recirculation was increased, flue gas emissions were reduced, pollutant emission reduction efficiency was improved, solid fuel consumption was reduced, and more efficient energy conservation and emission reduction effects were achieved.
Smart Images
Figure CN117701877B_ABST