公开(公告)号：US20200340070A1

公开(公告)日：2020-10-29

申请号：US16926483

申请日：2020-07-10

Applicant: UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING

Inventor： Rong ZHU ,  Shaoyan HU ,  Kai DONG ,  Guangsheng WEI ,  Haoran MA ,  Weifeng LI ,  Yun ZHOU ,  Zhihui LI ,  Wenhe WU ,  Baochen HAN ,  Chao FENG ,  Rongfang SU

IPC: C21C5/30 ,  C21C5/46 ,  C21C5/36 ,  C01G31/02 ,  B01D53/76 ,  B01D53/38

Abstract: An efficient long-service-life blowing method include the steps of introducing vanadium extraction converter flue gas and decarburization converter flue gas into an oxygen combustor; obtaining first-purity CO2—N2 mixed gas through the vanadium extraction converter flue gas; obtaining second-purity CO2—N2 mixed gas through the decarburization converter flue gas; obtaining O2—CO2—N2 mixed gas through the decarburization converter flue gas; obtaining first-purity CO2 gas through the second-purity CO2—N2 mixed gas; and using the first-purity CO2—N2 mixed gas for bottom blowing of the vanadium extraction converter, using the second-purity CO2—N2 mixed gas as a carrier gas for blowing iron ore powder into the vanadium extraction converter, and using the O2—CO2—N2 mixed gas and the first-purity CO2 gas as a carrier gas for bottom blowing of the decarburization converter and bottom injecting of lime powder into the decarburization converter.