邯宝2号高炉锌平衡的研究
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摘要
通过分析邯宝2号高炉锌的走向及平衡,计算得出:2号高炉的锌负荷为0.555 9kg/t,入炉原料中烧结矿是高炉锌的主要来源,烧结矿带入高炉锌的比例达到81.76%;2号高炉的排锌率仅为46.12%,高炉正处于锌的积蓄期,有可能使炉况出现波动和风口上翘。严格控制烧结矿、球团矿的锌含量是解决锌危害的有效措施。随着焦炭中ZnO含量的升高,焦炭的CRI提高,CSR降低;随着ZnO含量的提高,烧结矿和球团矿RDI+6.3下降,RDI-3.15和RDI-0.5均上升,但烧结矿粉化比球团矿严重。
The Zn trend and balance for No.2blast furnace of Handan Iron and Steel Co.were analyzed in this paper.The results showed that Zn load of No.2blast furnace was0.555 9kg/t.And in blast furnace,81.76 % Zn came from sinters,which were the main alkali metal source in charging materials.The Zn removing rate of No.2blast furnace was 46.12 %,so the blast furnace was in a phase of Zn savings,which might make the blast furnace's production undulated and the tuyeres burned. The countermeasure to the harm of Zn was to control the content of Zn in sinters and pellets strictly.As increasing the content of ZnO in cokes,CRI would be improved and CSRbe reduced.RDI+6.3 of sinters and pellets would be declined,RDI-3.15 and RDI-0.5 be raised,when the content of ZnO was increased,while the degradation index of sinters was more serious than pellets.
The Zn trend and balance for No.2blast furnace of Handan Iron and Steel Co.were analyzed in this paper.The results showed that Zn load of No.2blast furnace was0.555 9kg/t.And in blast furnace,81.76 % Zn came from sinters,which were the main alkali metal source in charging materials.The Zn removing rate of No.2blast furnace was 46.12 %,so the blast furnace was in a phase of Zn savings,which might make the blast furnace's production undulated and the tuyeres burned. The countermeasure to the harm of Zn was to control the content of Zn in sinters and pellets strictly.As increasing the content of ZnO in cokes,CRI would be improved and CSRbe reduced.RDI+6.3 of sinters and pellets would be declined,RDI-3.15 and RDI-0.5 be raised,when the content of ZnO was increased,while the degradation index of sinters was more serious than pellets.
引文
[1]蒋胜,杨冬梅.碱金属对钒钦磁铁矿高炉冶炼的影响及对策[J].钢铁钒钛,2007,28(1):56-60.
[2]ZHANG Jian.Coexistence Theory of Slag Structure and Its Application to Calculation of Oxidizing Capability of Slag Melts[J].Journal of Iron and Steel Research International,2003,10(1):1-10.
[3]彭凤翔,王晶,宋国才.攀钢高炉碱金属状态的调查研究[J].钢铁钒钛,1992,13(1):16-24.
[4]Mamdouh M E,Kamal A E,Wafia T.R,et al.Ferrous Oxide Activity in FetO-TiO2-CaO-Al2O3 System[J].ISIJ International,1996,36(5):512-516.
[5]何新泽,李文一.包钢4号高炉长寿实践浅析[J].包钢科技,2001,27(3):21-23.
[6]赵丽树,吕庆,张淑会,等.温度和气氛对CaO+SiO2+Al2O3+MgO+FetO渣系FetO活度的影响[J].中国有色金属学报,2008,18(5):934-938.
[7]Kwang R..L.,HidekakI S.Activities of FetO in CaO-Al2O3-SiO2-FetO(<5Pct)Slags Saturated with Liquid Iron[J].Metallurgical and Materials Transactiona B,1994,25B(10):893-901.
[2]ZHANG Jian.Coexistence Theory of Slag Structure and Its Application to Calculation of Oxidizing Capability of Slag Melts[J].Journal of Iron and Steel Research International,2003,10(1):1-10.
[3]彭凤翔,王晶,宋国才.攀钢高炉碱金属状态的调查研究[J].钢铁钒钛,1992,13(1):16-24.
[4]Mamdouh M E,Kamal A E,Wafia T.R,et al.Ferrous Oxide Activity in FetO-TiO2-CaO-Al2O3 System[J].ISIJ International,1996,36(5):512-516.
[5]何新泽,李文一.包钢4号高炉长寿实践浅析[J].包钢科技,2001,27(3):21-23.
[6]赵丽树,吕庆,张淑会,等.温度和气氛对CaO+SiO2+Al2O3+MgO+FetO渣系FetO活度的影响[J].中国有色金属学报,2008,18(5):934-938.
[7]Kwang R..L.,HidekakI S.Activities of FetO in CaO-Al2O3-SiO2-FetO(<5Pct)Slags Saturated with Liquid Iron[J].Metallurgical and Materials Transactiona B,1994,25B(10):893-901.