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工程科学学报,第37卷,第5期:568572,2015年5月 Chinese Journal of Engineering,Vol.37,No.5:568-572,May 2015 DOI:10.13374/j.issn2095-9389.2015.05.005:http://journals.ustb.edu.cn 新型A]基复合脱氧剂脱氧效果研究 王唐林23》,宋波2)区,宋明明2,陈毛川2》,毛璟红 1)北京科技大学钢铁治金新技术国家重点实验室,北京1000832)北京科技大学治金与生态工程学院,北京100083 3)鞍钢集团钒钛(钢铁)研究院攀钢集团研究院有限公司,攀枝花6170004)北京科技大学材料科学与工程学院,北京100083 ☒通信作者,E-mail:songbo(@metall.usth.cdu.cm 摘要A山作为炼钢脱氧剂单独脱氧时易烧损,导致利用率较低:同时,其脱氧产物AO3熔点高,形状不规则,不易在脱氧 过程中上浮排出,造成水口堵塞,恶化钢材质量.为了提高铝的脱氧效率,同时使脱氧产物AL,O,能快速从钢液中上浮排出, 本文研究了一种以金属铝为有效脱氧组分,低熔点氧化物渣系为载体的新型复合脱氧剂.实验表明,使用该脱氧剂不仅可以 保证钢液中溶解氧的质量分数在10×106以下,而且脱氧后钢中A山203夹杂物与纯A1脱氧相比尺寸更小、数量更少,较显著 地提高了钢材的纯净度,具有良好的脱氧效果 关键词炼钢:脱氧剂:铝:脱氧:氧化铝夹杂 分类号TF704.1 Deoxidization effect research of a new Al based complex deoxidizer WANG Tang-lin),SONG Bo SONG Ming-ming,CHEN Mao-chuan,MAO Jing-hong 1)State Key Laboratory of Advanced Metallurgy,University of Science and Technology Beijing,Beijing 100083,China 2)School of Metallurgical and Ecological Engineering,University of Science and Technology Beijing,Beijing 100083,China 3)Ansteel Research Institute of Vanadium Titanium (Iron Steel)Pangang Group Research Institute Co.,Lid.Panzhihua,617000,China 4)School of Materials Science and Engineering,University of Science and Technology Beijing,Beijing 100083,China Corresponding author,E-mail:songbo@metall.ustb.edu.cn ABSTRACT As a deoxidizer for steelmaking,Al has a problem of oxidation loss when it is added into liquid steel,which leads to a lower utilization rate of Al.At the same time,the high melting point and irregular shape of the deoxidization products make it difficult to remove AlO inclusions from molten steel effectively,which causes nuzzle clogging and steel quality deteriorative.A new kind of complex deoxidizer which takes Al as the effective deoxidization component and a low melting point slag including Al2O,SiOMgo- CaO as the carrier was investigated to improve the deoxidization utilization rate of Al and make the deoxidization products eliminate quickly from molten steel.Experiment results showed that the complex deoxidizer not only guaranteed the dissolved oxygen content in molten steel below 10x10,but also made the deoxidization inclusions fewer and smaller.Compared with Al deoxidization,the puri- ty of steel was significantly improved and an excellent deoxidization effect was presented. KEY WORDS steelmaking:deoxidizers:aluminum:deoxidization:alumina inclusions 随着治金技术的不断进步以及市场对钢铁产品质 能0.因此,如何降低钢中氧的含量,提高钢的纯净 量要求的日益提高,一些特殊钢种对钢中非金属夹杂 度,就显得尤为重要 物的数量和形态要求非常严格.实验表明,当钢中氧 目前工业生产中使用的脱氧方法主要有沉淀脱 的质量分数由30×10-6降低到10×10-6以下时,其接 氧、扩散脱氧和真空脱氧三种四,铝作为脱氧剂对钢液 触疲劳寿命可提高近30倍,极大改善了钢材的使用性 进行沉淀脱氧时,脱氧迅速且成本低,但铝在溶解过程 收稿日期:2013-12-26 基金项目:中央高校基本业务科研费资助项目(FRF-SD-12O10A,FRF-SD-12-O02B)工程科学学报,第 37 卷,第 5 期: 568--572,2015 年 5 月 Chinese Journal of Engineering,Vol. 37,No. 5: 568--572,May 2015 DOI: 10. 13374 /j. issn2095--9389. 2015. 05. 005; http: / /journals. ustb. edu. cn 新型 Al 基复合脱氧剂脱氧效果研究 王唐林1,2,3) ,宋 波1,2) ,宋明明1,2) ,陈毛川1,2) ,毛璟红4) 1) 北京科技大学钢铁冶金新技术国家重点实验室,北京 100083 2) 北京科技大学冶金与生态工程学院,北京 100083 3) 鞍钢集团钒钛( 钢铁) 研究院攀钢集团研究院有限公司,攀枝花 617000 4) 北京科技大学材料科学与工程学院,北京 100083  通信作者,E-mail: songbo@ metall. ustb. edu. cn 摘 要 Al 作为炼钢脱氧剂单独脱氧时易烧损,导致利用率较低; 同时,其脱氧产物 Al2O3 熔点高,形状不规则,不易在脱氧 过程中上浮排出,造成水口堵塞,恶化钢材质量. 为了提高铝的脱氧效率,同时使脱氧产物 Al2O3 能快速从钢液中上浮排出, 本文研究了一种以金属铝为有效脱氧组分,低熔点氧化物渣系为载体的新型复合脱氧剂. 实验表明,使用该脱氧剂不仅可以 保证钢液中溶解氧的质量分数在 10 × 10 - 6以下,而且脱氧后钢中 Al2O3 夹杂物与纯 Al 脱氧相比尺寸更小、数量更少,较显著 地提高了钢材的纯净度,具有良好的脱氧效果. 关键词 炼钢; 脱氧剂; 铝; 脱氧; 氧化铝夹杂 分类号 TF704. 1 Deoxidization effect research of a new Al based complex deoxidizer WANG Tang-lin1,2,3) ,SONG Bo1,2)  ,SONG Ming-ming1,2) ,CHEN Mao-chuan1,2) ,MAO Jing-hong4) 1) State Key Laboratory of Advanced Metallurgy,University of Science and Technology Beijing,Beijing 100083,China 2) School of Metallurgical and Ecological Engineering,University of Science and Technology Beijing,Beijing 100083,China 3) Ansteel Research Institute of Vanadium & Titanium ( Iron & Steel) Pangang Group Research Institute Co. ,Ltd. ,Panzhihua,617000,China 4) School of Materials Science and Engineering,University of Science and Technology Beijing,Beijing 100083,China  Corresponding author,E-mail: songbo@ metall. ustb. edu. cn ABSTRACT As a deoxidizer for steelmaking,Al has a problem of oxidation loss when it is added into liquid steel,which leads to a lower utilization rate of Al. At the same time,the high melting point and irregular shape of the deoxidization products make it difficult to remove Al2O3 inclusions from molten steel effectively,which causes nuzzle clogging and steel quality deteriorative. A new kind of complex deoxidizer which takes Al as the effective deoxidization component and a low melting point slag including Al2O3 --SiO2 --MgO-- CaO as the carrier was investigated to improve the deoxidization utilization rate of Al and make the deoxidization products eliminate quickly from molten steel. Experiment results showed that the complex deoxidizer not only guaranteed the dissolved oxygen content in molten steel below 10 × 10 - 6,but also made the deoxidization inclusions fewer and smaller. Compared with Al deoxidization,the puri￾ty of steel was significantly improved and an excellent deoxidization effect was presented. KEY WORDS steelmaking; deoxidizers; aluminum; deoxidization; alumina inclusions 收稿日期: 2013--12--26 基金项目: 中央高校基本业务科研费资助项目( FRF--SD--12--010A,FRF--SD--12--002B) 随着冶金技术的不断进步以及市场对钢铁产品质 量要求的日益提高,一些特殊钢种对钢中非金属夹杂 物的数量和形态要求非常严格. 实验表明,当钢中氧 的质量分数由 30 × 10 - 6降低到 10 × 10 - 6以下时,其接 触疲劳寿命可提高近 30 倍,极大改善了钢材的使用性 能[1]. 因此,如何降低钢中氧的含量,提高钢的纯净 度,就显得尤为重要. 目前工业生产中使用的脱氧方法主要有沉淀脱 氧、扩散脱氧和真空脱氧三种[2],铝作为脱氧剂对钢液 进行沉淀脱氧时,脱氧迅速且成本低,但铝在溶解过程
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