LATS refining ladle slag modifying with CaO-CaF_2  

作　　者：Hongming Wang Guirong Li Zhongming Ren Bo Li Xuejun Zhang Guomin Shi 

机构地区：[1]School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, China [2]Shanghai Enhanced Laboratory of Ferro-Metallurgy, Shanghai University, Shanghai 200072, China [3]Stainless Steel Branch, Baosteel Group, Shanghai 200431, China

出　　处：《Journal of University of Science and Technology Beijing》2007年第2期125-129,共5页北京科技大学学报（英文版）

基　　金：This study was financially supported by Baosteel, College Natural Science Research Project of Jiangsu Province (No. 04KJB430022,05KJD450043);the National Natural Science Foundation of China (No.50474037)

摘　　要：To reduce the slag sticking onto the snorkel of the ladle during the ladle alloying treatment station （LATS） process, CaO- CaF2 （the mass ratio of CaO/CaF2 is 1：1） was employed as the modifier of the LATS refining ladle slag. The effect of CaO-CaF2 on the melting point, viscosity, and desulfurizing capability of the ladle slag was investigated. The melting point of the unmodified ladle slag is 1439℃. When adding 20wt% CaO-CaF2, the melting point is decreased to 1327℃. At 1500℃. the viscosity of the unmodified ladle slag is 6.5 Pa.s, which can be decreased lower than 2 Pa.s by adding more than 10wt% CaO-CaF2. The experimental results of desulfu- rization of the melts show that the desulfurizing power of the ladle slag can be enhanced by adding CaO-CaF2.To reduce the slag sticking onto the snorkel of the ladle during the ladle alloying treatment station （LATS） process, CaO- CaF2 （the mass ratio of CaO/CaF2 is 1：1） was employed as the modifier of the LATS refining ladle slag. The effect of CaO-CaF2 on the melting point, viscosity, and desulfurizing capability of the ladle slag was investigated. The melting point of the unmodified ladle slag is 1439℃. When adding 20wt% CaO-CaF2, the melting point is decreased to 1327℃. At 1500℃. the viscosity of the unmodified ladle slag is 6.5 Pa.s, which can be decreased lower than 2 Pa.s by adding more than 10wt% CaO-CaF2. The experimental results of desulfu- rization of the melts show that the desulfurizing power of the ladle slag can be enhanced by adding CaO-CaF2.

关 键 词：LATS ladle refining SLAG melting point VISCOSITY DESULFURIZATION 

分 类 号：TF703.6[冶金工程—钢铁冶金]