连铸过程结晶器内液态保护渣中MnO含量变化模型  

Model for Changing of MnO Content in Mold Flux during Concasting

作　　者：王新月[1] 金山同[1] 苍大强[1] 

机构地区：[1]北京科技大学冶金与生态工程学院,北京100083

出　　处：《特殊钢》2006年第6期15-17,共3页Special Steel

摘　　要：根据建立的MnO含量变化模型得出,增大反应的表观速率常数k、渣-钢界面面积和反应时间,则保护渣中MnO含量增加。保护渣中MnO初始含量和初始[Mn]亦影响保护渣中MnO含量的变化。实验表明,16Mn钢Φ300mm坯连铸过程保护渣中初始MnO含量为1.5%,30min后提高到2.2%;Q235钢板坯连铸时,保护渣初始(MnO)量从0%提高到2.51%时,保护渣的熔化温度由1069℃降到1063℃,1300℃粘度由0.165Pa.s降至0.142Pa.s。Based on established a model for changing of MnO content, it was obtained that with increasing apparent rate constant k, flux-steel interfacial area and reacting time, the MnO content in flux increased. The initial （MnO） and initial [ Mn] influenced MnO content in flux. The test results showed that during steel 16Mn Ф300 mm billet concasting, the initial MnO content in flux was 1.5%, after casting for 30 min it increased to 2. 2% ; and during steel Q235 slab casting, as initial （MnO） in flux increased from 0% to 2.51% , the mehing temperature of flux decreased from 1 069 ℃ to 1 063 ℃ , of which the viscosity at 1 300℃ decreased from 0. 165 Pa·s to 0. 142 Pa·s.

关 键 词：结晶器 保护渣 MnO含量 模型 

分 类 号：TF777[冶金工程—钢铁冶金]