碳铝顶渣改质剂在低碳钢生产中的应用实践  

Application Practice of Carbon-Aluminum Top Slag-Modifier in Low Carbon Steel Production

作　　者：徐韬 姜新平 王强 俞海明 谭广志 Xu Tao;Jiang Xinping;Wang Qiang;Yu Haiming;Tan Guangzhi(Xinjiang Bayi Iron&Steel Co Ltd No.2 Steelmaking Plant,Wulumoqi 830022;Beijing Puyu Environmental Protection Technology Co Ltd,Beijingl00081;Xinjiang Zhonghe Dazheng Metallurgy Technology Co Ltd,Wulumoqi 830022;Xinjiang Engineering Vocational and Technical College,Wulumoqi 830022)

机构地区：[1]新疆八一钢铁股份有限公司第二炼钢厂,乌鲁木齐830022 [2]北京璞域环保科技有限公司,北京100081 [3]新疆中合大正冶金科技有限公司,乌鲁木齐830022 [4]新疆工程职业技术学院,乌鲁木齐830022

出　　处：《特殊钢》2021年第5期26-29,共4页Special Steel

摘　　要：钢包顶渣的改质是防止钢水二次氧化、钢液深度脱氧、优化钢液和夹杂物去除的重要工艺方法。120 t转炉+LF+板材生产线生产低碳铝镇静钢SPHC和330CL时,LF精炼采用碳铝改质剂(/%:≥35Al_(2)O_(3),15~30C,5~15Al,≤5SiO_(2),6~12CaF_(2))较无碳改质剂(/%:40~60Al_(2)O_(3),≥20Al,2-10CaO,≤10SiO_(2))钢水增氮量从0.0005%-0.0015%降至≤0.001%,脱硫率从40%增至45%。The modification of ladle top slag is an important technological method to prevent secondary oxidation of molten steel,deep deoxidization of molten steel and optimize the removal of inclusions in molten steel.By using 120 t BOF-LF-Plate production line to produce low carbon aluminum killed steel SPHC and 330CL,in LF refining with using carbonaluminum modifier(/%:≥35Al_(2)O_(3),15~30C,5~15Al,≤5SiO_(2),6~12CaF_(2)),as compared with using carbon-free top slag modifier(/%:40~60Al_(2)O_(3),≥20Al,2-10CaO,≤10SiO_(2)),liquid N increment dicreases from 0.0005%~0.0015% to ≤0.001%,rate of desulphurization increases from 40% to 45%.

关 键 词：钢包顶渣 复合改质剂 泡沫渣 钢液增碳 

分 类 号：TF761.2[冶金工程—钢铁冶金]