基于适宜镁铝比的MgO添加方式及实效研究
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摘要
基于适宜镁铝比的三段式精细化控制方针,提出了烧结-球团-高炉等工序中协同优化-功效最大化的MgO添加方式:①采用烧结矿工艺添加细磨含MgO熔剂的粒度的方法,制备低MgO优质烧结矿;②对菱镁石进行活化焙烧处理,制备含MgO优质球团矿;③若烧结矿或球团矿带入高炉内的MgO,不能满足高炉炉渣对MgO的需求,可采用与煤粉共同风口喷吹方法进行补充添加。实践表明,适宜镁铝比操作具有显著的经济效益与社会效益。
Based on three-segment control theory of suitable Mg0/Al_2 O_3 ratio, an efficient addition method of MgO by cooptimizing sinter-pellet-BF processes are proposed in this paper: 1) producing high quality sinter with low MgO by adding ground MgO flux; 2) producing MgO-bearing pellet by using activating magnesite as additive; 3) injecting pulverized MgO and coal together from tuyere when addition of MgO by sinter or pellet is not satisfied the demand for MgO in blast furnace slag. Practice of blast furnace production shows that the operation of suitable MgO/Al_2 O_3 ratio makes significant social and economic benefits.
Based on three-segment control theory of suitable Mg0/Al_2 O_3 ratio, an efficient addition method of MgO by cooptimizing sinter-pellet-BF processes are proposed in this paper: 1) producing high quality sinter with low MgO by adding ground MgO flux; 2) producing MgO-bearing pellet by using activating magnesite as additive; 3) injecting pulverized MgO and coal together from tuyere when addition of MgO by sinter or pellet is not satisfied the demand for MgO in blast furnace slag. Practice of blast furnace production shows that the operation of suitable MgO/Al_2 O_3 ratio makes significant social and economic benefits.
引文
[1]郎建峰,李振国,张玉柱.MgO对烧结矿质量的影响及MgO与B203的交互作用[J].矿产综合利用,2000,(1):22-25.
[2] Kimura K, Tsukihashi F. Effect of Al_2O_3 and MgO addition on melting behavior of sinter[J]. CAMP-ISIJ. 2004, 17:574-577.
[3] Yadav U S, Pandey B D. Influence of magnesia on sintering characteristics of iron ore[J]. Ironmaking and Steelmaking, 2002, 29(2):91-94.
[4] Higuchi K, Tanaka T, Sato T. Reaction behavior of dolomite accompanied with formation of magnetite solid solution in iron ore sintering process[J]. ISIJ International, 2007, 47(5):669-678.
[5]金明芳,李光森,姜鑫,等.矿石特性对CaO-Fe_2O_3熔体渗透性的影响[J].中国冶金,2007,17(7):51-54.
[6]姜鑫,吴钢生,魏国,等.MgO对烧结工艺及烧结矿冶金性能的影响[J].钢铁,2006, 41(3):8-11.
[7]姜鑫,吴刚生,金明芳,等.MgO对烧结矿软熔性能的影响.东北大学学报(自然科学版)[J].2006, 27(12),1358-1361.
[8] Jiang Xin, Wu Gang-sheng, Li Guang-sen, et al. Study on Improving the Softening-Melting Properties of MgO-Bearing Iron Ores[J]. Journal of Northeastern University(Natural Science),2007, 28(3):365-368.
[9] Fengman Shen, Xin Jiang, Gangsheng Wu, et al. Proper MgO Addition in Blast Furnace Operation[J].I ISIJ International,2006,46(1):65-69.
[10]谷少党,龙防,姜鑫,等.安钢3号高炉降低炉渣镁铝比实践[J].炼铁,2015,34(6):5-8.
[11]李圣辉,陈铁军,张一敏,等.含镁添加剂用于铁矿球团的试验研究[J].烧结球团,2011,36(1):33-37.
[12]周国凡,杨福.添加MgO对球团矿成球性能及强度的影响[J].钢铁研究,2009,2(37):10-13.
[13]张立国,张宗旺,仁彤旭.鞍钢球团配加白云石熔剂的研究[J].中国冶金,2011,8(21):34-38.
[14] Li Sheng-hui, et al. Experimental Study on Application of MgBearing Additive in Iron Ore Pellet[J]. sintering and pelletizing,2011,36(1):33-37.
[15] Zhou Guo-fan, Yang Fu. Effects of adding MgO on pelletizing ability and strength of pellet[J]. Research on Iron and Steel,2009, 2(37):10-13.
[16] Zhang Li-guo, Zhang Zong-wang, Ren Tong-xu. Study on Compound Dolomite Flux on Pellet in Ansteel[J]. China Metallurgy,2011,8(21):34-38.
[17]宋招权. MgO对球团矿质量的影响[J].烧结球团,2001,26(6):22-24.
[18]吴钢生,边美柱,沈峰满.碱性含镁球团矿的应用及合理炉料结构研究[J].钢铁,2006,41(12):19-25.
[19]周明顺,沈峰满,翟立委,等.MgO添加方式对改善球团矿冶金性能的影响[J].钢铁,2012,47(4):14-18.
[20] Fengman Shen, Qiangjian Gao, Guo Wei, et al. Densification Process of MgO Bearing Pellets[J]. Steel research Int, 2015,86(6):644-650.
[21] Fengman Shen, Qiangjian Gao, Guo Wei, et al. Effect of magnesia on the compressive strength of pellets[J]. International Journal of Minerals, Metallurgy and Materials,2014,21(5):431-437.
[22] GAO Qiangjian, SHEN Fengman, WEI Guo, et al. Effect of MgO Containing Additive on Low-Temperature Metallurgical Properties of Oxidized Pellet[J]. Journal of Iron and Steel Research, International. 2013,20(7),25-28.
[23]郭宪臻,魏国,沈峰满,等.煤粉-菱镁石混合喷吹对安钢高炉操作的影响[J].东北大学学报(自然科学版),2011,32(10),1444-1447.
[2] Kimura K, Tsukihashi F. Effect of Al_2O_3 and MgO addition on melting behavior of sinter[J]. CAMP-ISIJ. 2004, 17:574-577.
[3] Yadav U S, Pandey B D. Influence of magnesia on sintering characteristics of iron ore[J]. Ironmaking and Steelmaking, 2002, 29(2):91-94.
[4] Higuchi K, Tanaka T, Sato T. Reaction behavior of dolomite accompanied with formation of magnetite solid solution in iron ore sintering process[J]. ISIJ International, 2007, 47(5):669-678.
[5]金明芳,李光森,姜鑫,等.矿石特性对CaO-Fe_2O_3熔体渗透性的影响[J].中国冶金,2007,17(7):51-54.
[6]姜鑫,吴钢生,魏国,等.MgO对烧结工艺及烧结矿冶金性能的影响[J].钢铁,2006, 41(3):8-11.
[7]姜鑫,吴刚生,金明芳,等.MgO对烧结矿软熔性能的影响.东北大学学报(自然科学版)[J].2006, 27(12),1358-1361.
[8] Jiang Xin, Wu Gang-sheng, Li Guang-sen, et al. Study on Improving the Softening-Melting Properties of MgO-Bearing Iron Ores[J]. Journal of Northeastern University(Natural Science),2007, 28(3):365-368.
[9] Fengman Shen, Xin Jiang, Gangsheng Wu, et al. Proper MgO Addition in Blast Furnace Operation[J].I ISIJ International,2006,46(1):65-69.
[10]谷少党,龙防,姜鑫,等.安钢3号高炉降低炉渣镁铝比实践[J].炼铁,2015,34(6):5-8.
[11]李圣辉,陈铁军,张一敏,等.含镁添加剂用于铁矿球团的试验研究[J].烧结球团,2011,36(1):33-37.
[12]周国凡,杨福.添加MgO对球团矿成球性能及强度的影响[J].钢铁研究,2009,2(37):10-13.
[13]张立国,张宗旺,仁彤旭.鞍钢球团配加白云石熔剂的研究[J].中国冶金,2011,8(21):34-38.
[14] Li Sheng-hui, et al. Experimental Study on Application of MgBearing Additive in Iron Ore Pellet[J]. sintering and pelletizing,2011,36(1):33-37.
[15] Zhou Guo-fan, Yang Fu. Effects of adding MgO on pelletizing ability and strength of pellet[J]. Research on Iron and Steel,2009, 2(37):10-13.
[16] Zhang Li-guo, Zhang Zong-wang, Ren Tong-xu. Study on Compound Dolomite Flux on Pellet in Ansteel[J]. China Metallurgy,2011,8(21):34-38.
[17]宋招权. MgO对球团矿质量的影响[J].烧结球团,2001,26(6):22-24.
[18]吴钢生,边美柱,沈峰满.碱性含镁球团矿的应用及合理炉料结构研究[J].钢铁,2006,41(12):19-25.
[19]周明顺,沈峰满,翟立委,等.MgO添加方式对改善球团矿冶金性能的影响[J].钢铁,2012,47(4):14-18.
[20] Fengman Shen, Qiangjian Gao, Guo Wei, et al. Densification Process of MgO Bearing Pellets[J]. Steel research Int, 2015,86(6):644-650.
[21] Fengman Shen, Qiangjian Gao, Guo Wei, et al. Effect of magnesia on the compressive strength of pellets[J]. International Journal of Minerals, Metallurgy and Materials,2014,21(5):431-437.
[22] GAO Qiangjian, SHEN Fengman, WEI Guo, et al. Effect of MgO Containing Additive on Low-Temperature Metallurgical Properties of Oxidized Pellet[J]. Journal of Iron and Steel Research, International. 2013,20(7),25-28.
[23]郭宪臻,魏国,沈峰满,等.煤粉-菱镁石混合喷吹对安钢高炉操作的影响[J].东北大学学报(自然科学版),2011,32(10),1444-1447.