|
|
|
| Experiment on improving transfer of MnO in slag to molten steel |
| DAI Shi-fan，WU Wei，MA Deng，ZHANG Xi-dong，WANG Peng |
| （Metallurgical Technology Research Department， Central Iron and Steel Research Institute， Beijing 100081， China） |
|
|
|
|
Abstract In order to improve manganese yield of manganese ore direct alloying ，according to the results of thermodynamic analysis， the influence factors of reducing the manganese distribution ratio between slag and steel were determined. The analysis results showed that improving the temperature and the activity of carbon were the necessary conditions to reduce the manganese distribution ratio between slag and steel. The test scheme of induction furnace was designed， and the experimental research was carried out. Results showed that the average yield of direct alloying of manganese in manganese ore was 90.8% with reducing agent in the refining slag. The manganese distribution ratio was the lowest with the carbon addition of 1.2 -1.4 in silicon carbide as the reducing agent. The manganese distribution ratio between slag and steel could be effectively reduced at high temperature and high carbon content. Process parameters such as bottom blowing strength and manganese ore addition could affect direct alloying of manganese ore. The harmful influence of the addition of manganese ore and reducing agent on the phosphorus and sulfur in steel should be controlled.
|
|
Received: 19 December 2016
Published: 28 July 2017
|
|
|
|
| [1] |
YU Hui-xiang, PAN Ming, YANG De-xin. Behavior of inclusions in ultra-low carbon IF steel during deoxidation and alloying process[J]. Iron and Steel, 2020, 55(6): 46-53. |
| [2] |
NIU Kai-jun, YANG Wen, ZHANG Li-feng, CHU Yan-ping, ZHANG Hong-qi, GUO Zi-qiang. Thermodynamics and industrial practice of formation of inclusions during solidification of tire cord steels[J]. Iron and Steel, 2020, 55(6): 61-67. |
| [3] |
CAO Yan-guang, LI Zhao-dong, DING Can-can, ZHANG Jin-wen, YONG Qi-long, GAO Jian-bing. Effect of niobium addition on hardenability of high-speed railway axle steel[J]. Iron and Steel, 2020, 55(6): 107-112. |
| [4] |
ZENG Ze-yun, LI Chang-rong, LI Zhi-ying, LIU Zhan-lin,LI Zheng-song, ZHAI Yong-qiang. Thermodynamic analysis of titanium precipitation in HRB500E seismic steel[J]. Iron and Steel, 2020, 55(5): 45-51. |
| [5] |
XIAO Da-heng, TANG Wei, LUO Deng, WANG Zhen, XIE Zhen-jia, SHANG Cheng-jia. Microstructure and properties of low temperature steel for ultra large liquefied petroleum gas carrier[J]. Iron and Steel, 2020, 55(4): 82-87. |
| [6] |
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. |
|
|
|
|
2017, Vol. 52 
