BOF-LF流程马口铁大型夹杂物研究  

Research on Large Inclusions of Tinplate in BOF-LF Process

作　　者：陈永洪 贾雅楠 刘伟 王硕明 

机构地区：[1]华北理工大学,河北唐山063009

出　　处：《铸造技术》2016年第5期973-975,共3页Foundry Technology

基　　金：河北省高等学校科学技术研究项目(Z2014019);河北省科技计划项目(1321101018D)

摘　　要：分析了低成本的,用于制造马口铁三片罐的150吨BOF-LF-CC工艺流程生产过程钢中大型夹杂物的演变规律。结果表明:大型夹杂物含量正常坯平均值4.8 mg/10 kg,头坯28.6 mg/10 kg,混浇坯64.7 mg/10 kg,尾坯92.2 mg/10 kg。正常坯大型夹杂物主要为Si O_2-Al_2O_3复合夹杂物,来源于脱氧产物;非稳态大型夹杂主要是Si O_2-Al_2O_3与其他的复合夹杂,含有C、K、Cl、Na元素,粒度以大于300μm为主,分析可知主要来源于结晶器卷渣。The evolution rule of large inclusions was found after analyzing the 150 t BOF-LF-CC process which is used to produce low cost tinplate. The result is as follows, the average weight of large inclusions in the normal billet is 4.8 mg /10 kg, the head billet is 28.6 mg/10 kg, mixed billet is 64.7 mg/10 kg and the end billet is 92.2 mg/10 kg. The large inclusions in the normal billet mainly are Si O_2-Al_2O_3 complex inclusions which come from deoxidization products. The large inclusions in the unsteady state mainly are Si O_2-Al_2O_3 inclusions and other inclusions which contains C, K, Cl and N, most size of the particle is more than 300 μm which come from slag entrapment in the mold.

关 键 词：马口铁 夹杂物 连铸坯 BOF-LF流程 

分 类 号：TG142.1[一般工业技术—材料科学与工程] TF76[金属学及工艺—金属材料]