抽风制度对烧结过程的影响
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摘要
在钢铁企业中,烧结生产具有举足轻重的地位。一方面是因为烧结矿的质量直接影响高炉生产的质量;另一方面,烧结厂不仅是能耗大户,而且它所生产的烧结矿质量将直接影响高炉炼铁的焦比。因此,提高烧结矿的产量和质量就成为各个钢铁企业竞争点。
当今,烧结主要采用抽风烧结。影响烧结过程的因素有很多。本文主要从抽风制度对烧结过程的影响的实验室研究入手,研究不同的抽风制度下,烧结矿的产、质量。本文中,抽风制度主要研究点火负压、烧结负压和点火温度。
在实验室,用东鞍山烧结厂提供的原料,用正交试验设计九组方案,重复两次,取平均值作为实验结果。用正交试验多指标综合平衡分析法科学的分析了成品率、转鼓强度、烧结速度、低温还原粉化率、利用系数、返矿率、烧损率和烧成率等八个和烧结矿产量以及质量相关的指标。本文还描绘出在实验室和烧结现场的烧结过程中的风速、风温变化曲线图,为研究烧结过程中的气流分布提供了参考依据。
在对考察的八个指标的影响中,占主导影响地位的是点火负压,其次是烧结负压。但是不同的原材料要结合不同的抽风制度。本文为研究抽风制度对烧结过程的影响提供了一种方法。
The sinter production have a decive role in the iron and steel enterprises. On one hand, it is the sintering ore quality will affect the production quality of the blast furnace. On the other hand, the sintering plant is not only the high consumption, but also the the sintering ore quality produced by it would directly affect the coke ratio of the blash furnace ironmaking. So the quality and the output of the sintering ore have become the competitive point for varous iron and steel enterprise.
Nowadays, sintering production mainly adopt the method of sintering draught. Many elements would impact the sintering process. This text starts from the laboratory research for the inffluence on the draught to the sintering process. It is studied about the quality and output of the sintering ore under different draught regulation. In this text, the draught regualtion include low negetive pressure ignition, sintering negative pressure and ignition temperature.
In laboratory, with the raw material offerd by the East Anshan sintering plant, adopting the orthogonal experiment design nine groups of proposals, and considering the average value of twice as the test result. We use the orthogonal experimental multiple attribute equilibrium method analyze the rate of the finish products, drum-test strength, sintering speed, low temperature, reduced powered rate, utilization coefficient, return fine rate, burn out rate, calcination rate, the output of the sintering ore and other indexs related to the quality. The air speed of the laboratory and the sintering scene during the process, and the graph of the air temperature also be described in the text, which supply the refenerced basis for the air flow distribution in the sintering process.
In the observed eitght indexs, the low negative press ignition is predominate, and the sintering nagative press is in the next place. But different raw material should combine with different ragulations of draught. The research in this text offers a method to the influence on the draught regulation to the sintering process.
当今,烧结主要采用抽风烧结。影响烧结过程的因素有很多。本文主要从抽风制度对烧结过程的影响的实验室研究入手,研究不同的抽风制度下,烧结矿的产、质量。本文中,抽风制度主要研究点火负压、烧结负压和点火温度。
在实验室,用东鞍山烧结厂提供的原料,用正交试验设计九组方案,重复两次,取平均值作为实验结果。用正交试验多指标综合平衡分析法科学的分析了成品率、转鼓强度、烧结速度、低温还原粉化率、利用系数、返矿率、烧损率和烧成率等八个和烧结矿产量以及质量相关的指标。本文还描绘出在实验室和烧结现场的烧结过程中的风速、风温变化曲线图,为研究烧结过程中的气流分布提供了参考依据。
在对考察的八个指标的影响中,占主导影响地位的是点火负压,其次是烧结负压。但是不同的原材料要结合不同的抽风制度。本文为研究抽风制度对烧结过程的影响提供了一种方法。
The sinter production have a decive role in the iron and steel enterprises. On one hand, it is the sintering ore quality will affect the production quality of the blast furnace. On the other hand, the sintering plant is not only the high consumption, but also the the sintering ore quality produced by it would directly affect the coke ratio of the blash furnace ironmaking. So the quality and the output of the sintering ore have become the competitive point for varous iron and steel enterprise.
Nowadays, sintering production mainly adopt the method of sintering draught. Many elements would impact the sintering process. This text starts from the laboratory research for the inffluence on the draught to the sintering process. It is studied about the quality and output of the sintering ore under different draught regulation. In this text, the draught regualtion include low negetive pressure ignition, sintering negative pressure and ignition temperature.
In laboratory, with the raw material offerd by the East Anshan sintering plant, adopting the orthogonal experiment design nine groups of proposals, and considering the average value of twice as the test result. We use the orthogonal experimental multiple attribute equilibrium method analyze the rate of the finish products, drum-test strength, sintering speed, low temperature, reduced powered rate, utilization coefficient, return fine rate, burn out rate, calcination rate, the output of the sintering ore and other indexs related to the quality. The air speed of the laboratory and the sintering scene during the process, and the graph of the air temperature also be described in the text, which supply the refenerced basis for the air flow distribution in the sintering process.
In the observed eitght indexs, the low negative press ignition is predominate, and the sintering nagative press is in the next place. But different raw material should combine with different ragulations of draught. The research in this text offers a method to the influence on the draught regulation to the sintering process.
引文
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[2]Dawson P R.Recent Developments in Iron Ore Sintering New Development forSintering[J].Ironmaking and Steelmaking.1993,N0.2:135-136
[3]BRISTOW NJ,GOSS J andWATERS A G.Iron Steelmaker[M],1991
[4]Brussels.Steel statistical yearbook[C].International Iron and Steel Institute.1991
[5]Satskii V A.Tarasov V P,LNabona V.Results of Operating the Bell ChargingApparatus with Delivery of Part of the Coke into the Axial Zone of the Top[J].Cokeand Ironmaking congress.2001,31(11):1-5
[6]Loo C E,Wan K T,Howes V R.Mechanical properties of natural and syntheticmineral phases in sinters having varying reduction adation indices[J].Ironmakingand Steelmaking,1998,25(6):279-285
[7]Kasai E.Influence of properties of fluxing materials on the flow of melt formed inthe sintering process[J].ISIJ International,2000,40(9):857-862
[8]Kowaldki W,Kersting K and Werner P.The Influence of Sinter Composition onSintering Rate and Phuical Quality of Sinter[C].Ironmaking ConferenceProceedings,1997:415-425
[9]王洪波,段祥光,杨天勇,等.包钢厚料层烧结实践[J].包钢科技,2002,28(3):26-28
[10]金德刚.安钢烧结厂的节能技术[J].河南冶金,1998,29(4):59-60
[11]K.梅耶尔.铁矿球团法[M].北京:冶金工业出版社,1980
[12]傅菊英,姜涛,朱德庆.烧结球团学[M].长沙:中南工业大学出版社,1996
[13]王筱留编.钢铁冶金学(炼铁部分)[M].北京:工业出版社,1990
[14]许满兴.论工艺参数对烧结产质量的影响及分析[J].烧结球团,2003(5):1-4
[15]唐先觉,朱雪琴.浅谈我国烧结球团业50年来的技术进步[J].烧结球团,2000,29(6):1-3
[16]范晓慧,陈许玲,李赛等.含钦铁精矿高铁低硅烧结技术[J].中南大学学报,2003,37(3):481-486
[17]C.E.LOO.原料特性对烧结高温带反应的影响[J].烧结球团,1994(3):41-46
[18]张瑞年.浅谈烧结节能降耗的技术途径和措施[J].烧结球团,2003,28(3):18- 20
铩颷19]边美柱,何晓义,侯贵生.固体燃料在烧结料中的燃烧分析及降耗措施[J].包钢科技,2002,28(3):19-22
[20]裴风玉,贾秀凤.高负压下增大固体燃料粒度降低烧结能耗[J].烧结球团,2000,25(2):40-42
[21]邱述明,贾光勇.钒钦磁铁矿烧结燃料二次分加生产实践[J].烧结球团,1998,23(2):35-37
[22]边美柱.包钢烧结矿原燃料结构现状[J].包钢科技,2002,28(3):29-35
[23]周文涛,吴文达.提高料层燃料燃烧效率的途径[J].鞍钢技术,1998,(1):7-15
[24]符伟国.降低烧结矿固体燃料消耗技术攻关[J].包钢科技,1996,(3):76-77
[25]高丙寅.低硅高品位烧结矿的生产实践[J].烧结球团,1996,21(4):50-52
[26]孙文东.降低武钢烧结工序能耗的实践[J].烧结球团,2003,28(3):47-50
[27]贺先新.浅析武钢厚料层烧结的发展[J].烧结球团,2004,29(3):1-5
[28]李寿宝,潘宝巨,任志国.降低铁矿粉烧结固体燃耗的技术[J].烧结球团,1996,21(3):5-8
[29]唐贤容,王笃阳,张清岑.烧结理论与工艺[M].长沙:中南工业大学出版社,1992
[30]孔令坛.我国炼铁原料技术的进步和展望[J].炼铁,2002,21(10)
[31]贺先新,翁得明.烧结固体燃料分加的研究[J].武钢技术 2002,40(4):5-8
[32]朱德庆,李建.高铁低硅高料层烧结研究[A].第八届全国炼铁原料学术会议论文集[C].2003,87-93
[33]唐先觉.当前日本烧结生产的几个特点[J].烧结球团,1998,23(2):1-5
[34]李桂田.中日钢铁工业节能历程的比较[J].中国能源,1997,(10):22-29
[35]张翎.降低烧结矿FeO含量改善烧结矿冶金性能[J].江苏冶金,1998,(3):31-36
[36]K.O.努尔马甘别托夫。铁矿石烧结中氧化-还原过程的研究[J].烧结球团,1995,20(1):22-29
[37]Г.С.维库洛夫.高料层烧结制度的完善与降低烧结矿中FeO的效果[J].苏联CT_(aл)b,1988,(6):4-11
[38]邱先彩,蔡汝卓,付守澄.voice公式在烧结实践中的应用.中南工业大学1986,3
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