公开(公告)号：US10988818B2

公开(公告)日：2021-04-27

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 ,  B01D53/38 ,  B01D53/76 ,  C01G31/02 ,  C21C5/36 ,  C21C5/46

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.