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工程科学学报,第38卷,第3期:335-341,2016年3月 Chinese Journal of Engineering,Vol.38,No.3:335-341,March 2016 D0l:10.13374/j.issn2095-9389.2016.03.006:http://journals.ustb.edu.cn 基于多功能转炉炼钢法的连续循环治炼过程 吕延春12,王新华”,朱国森2,李海波2) 1)北京科技大学治金与生态工程学院,北京1000832)首钢技术研究院,北京100043 ☒通信作者,E-mail:yyan98@qg.com 摘要为了研究脱碳渣在脱磷期的重新利用,基于多功能转炉炼钢法进行连续循环冶炼实验.实验发现:脱磷阶段渣中较 低的Fe0含量、吹炼5min左右,[C]≥2.8%的条件下,可实现转炉熔池内铁液P]≤0.025%的脱磷效果,并对低(Fe0)含量 炉渣的脱磷可行性进行热力学计算:随着循环的进行,石灰加入量逐渐降低,由65kgt降低至31kg1,转炉治炼终点钢水 回量由0.018%降低至0.005%,2-4炉后达到平衡状态:在循环过程中,脱磷阶段结束倒出炉渣60-80kgt,整个循环 结束一次性倒出剩余全部炉渣120-130kgt,平均渣量为83kgt左右,较普通工艺的120kgt渣量有大幅度减少. 关键词炼钢:转炉:脱磷:渣:再循环 分类号TF71 Continuous circulating smelting process based on multi-refining converter melting technology L0 Yan-chun,WANG Xin-hua》,ZHU Guo--sen2》,LI Hai--bo2》 1)School of Metallurgical and Ecological Engineering,University of Science and Technology Beijing,Beijing 100083,China 2)Shougang Research Institute of Technology,Beijing 100043,China Correspondent author,E-mail:Ivyan98@qq.com ABSTRACT Continuous circulating smelting experiments based on multi-refining converter melting technology were performed to re- search the recycling of decarburized slag in the dephosphorization period.The results show that under the condition of low FeO con- tent,strong mixing,blowing for about 5 min and [C]2.8%in the dephosphorization stage,the content of phosphorus in molten metal is less than 0.025%.With the continuous circulating smelting,the consumption of lime decreases from 65 kg'tto 31 kg't, the [P]content drops from 0.018%to 0.005%,and the smelting reaches equilibrium after 2-4 furnaces.During the smelting process,60-80 kg slag per ton steel is poured out at the end of the dephosphorization period,while 120-130 kg remaining slag per ton steel is poured out at the end of the loop.The average mass of slag is about 83 kg per ton steel,more less than 120 kg per ton steel in the ordinary process KEY WORDS steelmaking:converters:dephosphorization:slag:recycling 中国钢铁工业迅猛发展,2013年中国粗钢产量超 念在国内有了长足发展,但是受到生产节奏、底吹供气 过世界的一半,以炼钢为例,年产量超过7亿,这对国 强度、现有装备等因素的制约,需要开发一种能够在单 民经济快速增长发挥了重要作用,但在“能源、环境、 座转炉上进行的连续、快节奏、低成本、节能、高效的炼 质量、成本”等方面面临着多重巨大压力.近年来,转 钢工艺.本文基于转炉多功能炼钢法进行了转炉 炉炼钢依托LD一ORP、BRP、MURC等工艺I-使得少 SGS工艺的连续循环治炼研究. 渣炼钢(slag generation reduced steelmaking,SGRS)理 收稿日期:201501-19 基金项目:国家科技支撑计划资助项目(2012BAC27B02)工程科学学报,第 38 卷,第 3 期: 335--341,2016 年 3 月 Chinese Journal of Engineering,Vol. 38,No. 3: 335--341,March 2016 DOI: 10. 13374 /j. issn2095--9389. 2016. 03. 006; http: / /journals. ustb. edu. cn 基于多功能转炉炼钢法的连续循环冶炼过程 吕延春1,2) ,王新华1) ,朱国森2) ,李海波2) 1) 北京科技大学冶金与生态工程学院,北京 100083 2) 首钢技术研究院,北京 100043  通信作者,E-mail: lvyan98@ qq. com 摘 要 为了研究脱碳渣在脱磷期的重新利用,基于多功能转炉炼钢法进行连续循环冶炼实验. 实验发现: 脱磷阶段渣中较 低的 FeO 含量、吹炼 5 min 左右,[C]≥2. 8% 的条件下,可实现转炉熔池内铁液[P]≤0. 025% 的脱磷效果,并对低( FeO) 含量 炉渣的脱磷可行性进行热力学计算; 随着循环的进行,石灰加入量逐渐降低,由 65 kg·t - 1 降低至 31 kg·t - 1 ,转炉冶炼终点钢水 [P]量由 0. 018% 降低至 0. 005% ,2 ~ 4 炉后达到平衡状态; 在循环过程中,脱磷阶段结束倒出炉渣 60 ~ 80 kg·t - 1 ,整个循环 结束一次性倒出剩余全部炉渣 120 ~ 130 kg·t - 1 ,平均渣量为 83 kg·t - 1 左右,较普通工艺的 120 kg·t - 1 渣量有大幅度减少. 关键词 炼钢; 转炉; 脱磷; 渣; 再循环 分类号 TF71 Continuous circulating smelting process based on multi-refining converter melting technology L Yan-chun1,2)  ,WANG Xin-hua1) ,ZHU Guo-sen2) ,LI Hai-bo 2) 1) School of Metallurgical and Ecological Engineering,University of Science and Technology Beijing,Beijing 100083,China 2) Shougang Research Institute of Technology,Beijing 100043,China  Correspondent author,E-mail: lvyan98@ qq. com ABSTRACT Continuous circulating smelting experiments based on multi-refining converter melting technology were performed to re￾search the recycling of decarburized slag in the dephosphorization period. The results show that under the condition of low FeO con￾tent,strong mixing,blowing for about 5 min and [C]≥2. 8% in the dephosphorization stage,the content of phosphorus in molten metal is less than 0. 025% . With the continuous circulating smelting,the consumption of lime decreases from 65 kg·t - 1 to 31 kg·t - 1 , the [P]content drops from 0. 018% to 0. 005% ,and the smelting reaches equilibrium after 2--4 furnaces. During the smelting process,60--80 kg slag per ton steel is poured out at the end of the dephosphorization period,while 120--130 kg remaining slag per ton steel is poured out at the end of the loop. The average mass of slag is about 83 kg per ton steel,more less than 120 kg per ton steel in the ordinary process. KEY WORDS steelmaking; converters; dephosphorization; slag; recycling 收稿日期: 2015--01--19 基金项目: 国家科技支撑计划资助项目( 2012BAC27B02) 中国钢铁工业迅猛发展,2013 年中国粗钢产量超 过世界的一半,以炼钢为例,年产量超过 7 亿 t,这对国 民经济快速增长发挥了重要作用,但在“能源、环境、 质量、成本”等方面面临着多重巨大压力. 近年来,转 炉炼钢依托 LD--ORP、BRP、MURC 等工艺[1--3]使得少 渣炼钢( slag generation reduced steelmaking,SGRS) 理 念在国内有了长足发展,但是受到生产节奏、底吹供气 强度、现有装备等因素的制约,需要开发一种能够在单 座转炉上进行的连续、快节奏、低成本、节能、高效的炼 钢工艺. 本文基于转炉多功能炼钢法进行了转炉 SGRS 工艺[4]的连续循环冶炼研究.
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