有色金属科学与工程2023，Vol.14Issue(6)：764-772,9.DOI:10.13264/j.cnki.ysjskx.2023.06.003
高炉批重转换过程炉内热化学行为演变规律模拟研究
Numerical study on the thermochemical behavior evolution during dynamic batch weight conversion in a blast furnace
摘要
Abstract
In order to achieve the"carbon peaking and carbon neutrality"goal,China's ironmaking industry is facing a major challenge of energy saving and emission reduction.The study of the evolution of thermochemical behaviors during the transition from conventional blast furnaces to low-carbon blast ones plays an important guiding and promoting role in the green and low-carbon development of ironmaking technology.In this work,a coupled computational fluid dynamics and discrete element method(CFD-DEM)approach was employed to investigate the instantaneous effects of the dynamic changes of batch weight on the temperature field,cohesive zone and iron ore reduction degree distribution in the blast furnace.The results showed that when the batch weight reduced by 21.50%,the average solid temperature,cohesive zone height and average iron ore reduction degree were reduced by 5.81%,7.18%and 3.08%,and vice versa.It was found that the main operating parameters and characteristics could be restored to their previous levels when the batch weight was reduced or added to about 21.50%for this studied experimental blast furnace.Additionally,the restoration time cost of the transition process between the two dynamic equilibriums gradually decreased due to the adjustment of batch weight.In addition,the higher the average temperature of the inner burden,the faster it will reach a new dynamic equilibrium during batch weight variation.关键词
高炉过程/料批重/过程演变/模拟仿真/热化学行为Key words
blast furnace process/batch weight/process evolution/modelling and simulation/thermochemical behavior分类
矿业与冶金引用本文复制引用
季朗永,范海瀚,翁凌熠,苏中方,崔佳鑫,鄂殿玉..高炉批重转换过程炉内热化学行为演变规律模拟研究[J].有色金属科学与工程,2023,14(6):764-772,9.基金项目
国家自然科学基金资助项目(51904122,52264042) （51904122,52264042）
中国博士后科学基金资助项目(2021M690975) （2021M690975）
江西省自然科学基金资助项目(20212BAB214023) （20212BAB214023）
