莱钢异型坯钢液新型脱氧造渣工艺的研究与应用  

Research and application of new deoxidation slagging process for Laiwu Steel

作　　者：高雷雷 Gao Leilei(The Steelmaking Plant Laiwu lron and Steel Co.,Ltd,Laiwu 271104,China)

机构地区：[1]莱芜钢铁银山型钢有限公司炼钢厂,山东莱芜271104

出　　处：《冶金标准化与质量》2021年第6期24-28,38,共6页Metallurgical Standardization & Quality

摘　　要：莱钢炼钢厂120t LF精炼炉在供近终形异型坯钢液时采用硅钙钡、碳化钙脱氧造渣,脱氧产生高熔点Ca_(2)SiO_(4)、Ca_(3)SiO_(3)不熔物,吸附夹杂物效果差,连铸机在浇注时出现水口结瘤,无法实现稳态浇注,铸坯和轧材出现批量腹板裂纹;通过对IF精炼炉脱氧造渣工艺优化完善,将炉渣CaO-SiO_(2)二元渣系向CaO-SiO_(2)-Al_(2)O_(3)三元渣系转变,有效提高炉渣炉渣吸附夹杂物效果,解决水口结癇问题,提高钢液质量。The 120 ton LF refining furmace of Laiwu lron and Steel Co.,Ltd.used barium silicate caleium carbide and caleium carbide deoxidation to produce high meling point Ca_(2)SiO_(4)and Ca_(3)SiO_(3)refractory when supplying liquid sleel for near net shaped billets.The effect of absorbing inclusions was poor.The nozzle clogging ocured in the continuous caster during pouring,so the steady-state pouring could not be realized,and a batch of Web cracks appeared in the bllets and rolled products.The transformation from CaO-SiO_(2)binary slag system to CaO-SiO_(2)-Al_(2)O_(3),temary slag system can efctively improve the effect of slag adsorption of inclusions,solve the problem of nozle nodulation and improve the quality of molten steel.

关 键 词：近终形 高熔点 稳态浇注 腹板裂纹 

分 类 号：TF70[冶金工程—钢铁冶金]