|
|
|
| Reason and Measure for Slag Buildup on RH Immerge Tube of Panzhihua Steel |
LIANG Xiaoping1,JIN Yang1,WANG Yu1，
CHEN Tianming2,ZENG Jianhua2,ZHANG Min2 |
| 1. College of Materials Science and Engineering, Chongqing University， Chongqing 400044, China; 2. Panzhihua Iron and Steel Research Institute, Panzhihua 617000, Sichuan, China |
|
|
|
|
Abstract The reason and measure for slag buildup on RH immerge tube under current process of Panzhihua Steel have been studied based on experimental analysis and thermodynamic calculation. After studying the matters of slag buildup on RH immerge tube, it was found that the crystallization of high melt point phase MgO·Al2O3 are main cause for slag buildup. The results of effect of refining slag compositions on slag buildup indicates that the effective measure for reduce slag buildup is to control the activities of phases with high melting point in order to decrease crystallization of it by improve slag basicity and the ratio of CaO/Al2O3, and reduce the content of MgO.
|
|
Received: 01 January 1900
|
|
|
|
| [1] |
ZHOU Qi-qi1,LI Ji-peng1,2,CHENG Shu-sen1,LIU Kai1,LIU Zhao1. Application of IMCT model and KTH model in S50C steel desulfurization practice[J]. JOURNAL OF IRON AND STEEL RESEARCH , 2020, 32(4): 297-303. |
| [2] |
LIN Jie, YANG Cheng, WANG Yuanming, MOU Fenyun, HOU Dong, WANG Deyong. Deoxidation thermodynamics in electroslag remelting process[J]. Iron and Steel, 2019, 54(9): 44-49. |
| [3] |
YIN Bin， LI Wan-ming， WU Shao-peng， ZANG Xi-min， YU Hao-cen. Thermodynamic analysis of Al and Ti element loss in electroslag remelting Inconel718 superalloy[J]. Iron and Steel, 2019, 54(5): 86-94. |
| [4] |
ZHANG Kang-hui,ZHANG Yan-ling,LI Qiu-han,WU Tuo. Viscosity prediction model of Cr2O3containing slag based on coexistence theory[J]. JOURNAL OF IRON AND STEEL RESEARCH , 2019, 31(3): 251-257. |
| [5] |
LEI Jia-liu1， ZHAO Dong-nan1， ZHU Hang-yu2， JIANG Yue-dong3. A thermodynamic model of desulfurization for CaO-SiO2-MgO-Al2O3-Na2O slag based on IMCT theory[J]. Iron and Steel, 2019, 54(3): 35-41. |
| [6] |
ZHANG Kang- hui,ZHANG Yan- ling,LI Feng- shan,WU Tuo. A thermodynamic model for calculation of sulfur distribution ratio between CaO- SiO2- Al2O3- Na2O- TiO2- (MgO) slags and carbon saturated hot metal[J]. , 2018, 30(4): 265-272. |
|
|
|
|
2009, Vol. 44 
