低硅铝钢首罐钢水浸入水口防絮流分析.pdfVIP

鞍 钢 技 术 2016年 第 3 期 ANGANG TECHNOLOGY 总 第 399期 ( 生户卖減^ 低硅铝钢首罐钢水浸入水口防絮流分析 高洪涛\毛志勇\ 丁勇2,王国庆2,潘秀娟2 (1.鞍钢股份有限公司炼钢总厂，辽宁鞍山114021; 2.鞍钢实业集团有限公司，辽宁鞍山，114021) 摘要：分析了低硅铝钢浇次首罐浸入水口出现絮流现象的原因，提出了钢水冶炼和浇注 期间的预防措施，包括降低转炉终点氧含量，优化出钢过程钢水的脱氧方式;提高L F 炉处理期 间顶渣的还原性;合理控制钢水中的C a 含量等。采取上述措施之后，低硅铝钢浇次首罐浸入水 口的絮流现象减少近50%遥 关键词：低硅铝钢；浸入水口；浇次首罐;絮流 中图分类号:TF 748 文献标识码： A 文章编号：1006-4613(2016)03-0050-05 Analysis of Anti-flocculating Flow at Submerged Nozzle durin the First Ladle of Low Silicon Aluminum Molten Steel Casted Gao Hongtao1 ，Mao Zhiyong1 ，Ding Yong2 ，Wang Guoqing2，Pan Xiujuan2 (1. General Steelmaking Plant of Angang Steel Co ., Ltd., Anshan 114021, Liaoning, China ; 2. Angang Industry Group Co ., Ltd., Anshan 114021, Liaoning, China) A bstract ： The causes leading to the flocculating flow at submerged nozzle during the first ladle of low silicon aluminum molten steel casted were analyzed. Preventive measures in smelting molten steel and subsequent casting were taken , consisting of weakening the oxygen activity at blowing end point of converter steelmaking, optimizing the mode of deoxidation in tapping molten steel from converter, improving the reductibility of surface slag during steelmaking by ladle furnace as well as suitably controlling calcium content in molten steel. The probability of flocculating flow occurred at submerged nozzle during the first ladle of low silicon aluminum molten steel casted was cut down by about 50%. Key w ords ： low silicon aluminum steel ; submerged nozzle ; the first ladle of casting ; floccu­ lating flow 鞍钢股份有限公司炼钢总厂第四分厂冶炼低 定的影响，因此浇次首罐更