公开(公告)号：US11788160B2

公开(公告)日：2023-10-17

申请号：US17049449

申请日：2020-01-21

申请人： University of Science and Technology Beijing

发明人： Chao Feng ,  Rong Zhu ,  Guangsheng Wei ,  Baochen Han ,  Kai Dong ,  Xueliang Wang ,  Wenhe Wu ,  Shaoyan Hu ,  Weifeng Li ,  Juanjuan Jiang ,  Jianfeng Dong

IPC分类号： C21C5/32 ,  C21C5/46

CPC分类号： C21C5/32 ,  C21C5/4673

摘要： The present disclosure provides a converter CO2—O2 mixed injection smelting method and a fire point area temperature dynamic control method. The method realizes online monitoring through an infrared temperature sensor installed inside an oxygen lance, dynamically adjusts the mixing ratio of CO2 and O2 and the height of the oxygen lance position according to the fire point area temperature changes and process requirements in different smelting stages, so that the secondary smelting system interlockingly and dynamically controls the fire point area temperature and the molten pool heating rate.