Abstract：Regarding the requirement and development for producing clean steel with high efficiency，a new refining process of ladle bottom powder injection （L-BPI） was developed，and some important theory and key technologies related to this new process were investigated. The mechanisms both for the leakage of molten steel and powder clogging during bottom powder injection in the ladle were revealed，and the theory of designing the device for bottom powder injection was put forward，as well as the powder injection device that is wear proof and high temperature erosion resisting was invented and made. The inherent mechanism of multiphase flow transport and refining kinetics of the L-BPI was revealed. The key process technology of powder transport in ultra-slit refractory has been a breakthrough，and the new equipment with automatic control system for the L-BPI was developed. A successful application test of L-BPI in one steelmaking plant has been made，which shows high efficiency and low cost for secondary refining and the prospective for the development of new generation of clean steel production.
收稿日期: 2018-07-03
出版日期: 2018-11-20
引用本文:
娄文涛，朱苗勇，程中福. 钢包底喷粉精炼新工艺技术的开发及应用[J]. , 2018, 53(11): 29-35.
LOU Wen-tao，ZHU Miao-yong，CHENG Zhong-fu. Development and application of a new refining process for ladle bottom powder injection. Iron and Steel, 2018, 53(11): 29-35.
2018, Vol. 53 
