避免原辅料对KB-150t BOF-RH-CC流程MA超低碳钢水增碳的生产实践  

Production Practice of Avoiding Raw and Supplement Materials on Increase Carbon in MA Ultra-Low Carbon Steel Liquid during KB-150t BOF-RH-CC Flowsheet

作　　者：邓力[1] 彭其春[1] 宋佳霖[1] 邱雷[1] 盛喜松[2] 邓品团[2] 

机构地区：[1]武汉科技大学钢铁冶金及资源利用省部共建教育部重点实验室,武汉430081 [2]武汉钢铁(集团)公司,武汉430083

出　　处：《特殊钢》2015年第2期32-35,共4页Special Steel

摘　　要：MA超低碳钢（/%：≤0.005C,0.007-0.012Si,0.07-0.15Mn,≤0.025P,≤0.025S,≤0.035Als,≤0.002 0N）的生产流程为KB-150 t BOF（终点[C]≤0.020%）-RH-200 mm板CC工艺。试验分析了结晶器保护渣,中间包覆盖剂,钢包耐火材料对钢液增碳量影响。结果表明,结晶器增碳量（△C 0.0003%-0.0008%）明显高于中间包增碳量（△C 0.000 1%-0.0005%）,通过稳定冶金操作,控制保护渣原始碳量为1%-2%,向保护渣中添加MnO_2（3.5%-4.0%）,控制覆盖剂量等工艺措施,可有效地减少钢液增碳。The production flowsheet for MA ultra-low carbon steel（/%：≤0.005 C,0.007-0.012 Si,0.07-0.15 Mn,≤0.025 P,≤0.025 S,≤0.035 Als,≤0.002 ON）is KB-150 t BOF（end[C]≤0.020%）-RH-200 mm slab CC flowsheet.The effect of mold flux,tundish shielding agent and ladle refractory materials on incremental carbon content in liquid has been tested and analyzed.Results show that the incremental carbon content in liquid in mold（△C 0.000 3%-0.0008%）is obviously higher that in tundish（△C 0.0001%-0.0005%）,through using the measures including defining metallurgy operation,controlling initial carbon content in mold flux 1%-2%and adding 3.5%-4.0%MnO2 in flux,controlling the amount of tundish shielding agent,it is available to decrease the incremental carbon content in liquid.

关 键 词：MA超低碳钢 KB-150t BOF-RH-CC流程 结晶器保护渣 中间包覆盖剂 钢水增碳 

分 类 号：TF713[冶金工程—钢铁冶金]