MgO对高炉生产影响的研究现状及其展望
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摘要
对高炉内MgO对烧结矿、球团矿和高炉冶炼带来的不利影响进行综述,并讨论了从风口喷入MgO的优势。我国高炉普遍采取三种办法来提高炉渣中MgO含量,一是提高烧结矿中MgO含量;二是提高球团矿中MgO含量;三是从高炉炉顶加入含镁熔剂。但不管采取哪种方式来提高炉渣中MgO含量,都会增加渣量,恶化软熔带的透气性。而采取从风口喷入含镁熔剂,则可避免这些不利因素,以达到降低焦比、改善高炉技术经济指标,以及"节能减排"的目的。在满足了高炉MgO需求的前提下还可以提高资源利用率,改善高炉冶炼。
The negative influences of MgO on the sinter, pellet and the smelting in the BF were investigated.And the advantage that the MgO was injected into the BF with the coal also was analysed. As we know, there are three method to increase the content of MgO in the slag. Firstly, we can increase the MgO content of sinter.Secondly, the MgO content of pellet can be improved. Thirdly, the MgO of the slag can be increased by adding the magnesium flux from the top of the BF. However, no matter which it is taken, the slag will increase, and the permeability of the cohesive zone will deteriorate. In order to avoid these negative effects mentioned, the technology, the magnesium flux was injected into the BF from the tuyeres, was researched. It could achieve the goals that the coke rate was decreased, the technical and economic indexes of the BF were improved, the energy was saved, and the emission of the CO_2 was reduced. In addition, the injecting of the magnesium flux from the tuyeres not only met the requirement of the blast furnace for the content of the MgO, but also increased the utilization rate of the resources, as a result, the smelting of the blast furnace could be improved.
The negative influences of MgO on the sinter, pellet and the smelting in the BF were investigated.And the advantage that the MgO was injected into the BF with the coal also was analysed. As we know, there are three method to increase the content of MgO in the slag. Firstly, we can increase the MgO content of sinter.Secondly, the MgO content of pellet can be improved. Thirdly, the MgO of the slag can be increased by adding the magnesium flux from the top of the BF. However, no matter which it is taken, the slag will increase, and the permeability of the cohesive zone will deteriorate. In order to avoid these negative effects mentioned, the technology, the magnesium flux was injected into the BF from the tuyeres, was researched. It could achieve the goals that the coke rate was decreased, the technical and economic indexes of the BF were improved, the energy was saved, and the emission of the CO_2 was reduced. In addition, the injecting of the magnesium flux from the tuyeres not only met the requirement of the blast furnace for the content of the MgO, but also increased the utilization rate of the resources, as a result, the smelting of the blast furnace could be improved.
引文
[1]王喆,张建良,左海滨,等. MgO/Al2O3比对烧结矿矿物组成及冶金性能的影响[J].烧结球团, 2013, 38(5):1-4.
[2]龙防,周国凡.富Al2O3高炉炉渣黏度试验研究[J].河南冶金, 2006, 14(1):11-14.
[3]常久柱,赵勇. Al2O3对唐钢高炉炉渣性能的影响[J].炼铁, 2004, 23(3):10-13.
[4]张振峰,吕庆,李福民.高Al2O3钒钛炉渣熔化性能的试验研究[J].东北大学学报:自然科学版, 2007, 28(10):1414-1416.
[5]王筱留.钢铁冶金学:炼铁部分[M].第2版.北京:冶金工业出版社, 2008. 107-125.
[6]张玉柱,耿明山,项利,等. MgO含量和碱度对高炉渣的黏度的影响[J].材料与冶金学报, 2005, 4(4):253-256.
[7] Kimura K, Tsukihashi F. Effect of Al2O3 and MgO addition onmeltingbehaviorofsinter[J].CAMP-ISIJ,2004,17:574-577.
[8]蒋大军,林千谷,甘勤,等. MgO对烧结矿与高炉渣冶炼性能及工艺参数影响的试验[J].中国冶金, 2010, 20(1):35-41.
[9]何环宇,王庆祥,曾小宁. MgO含量对高炉炉渣粘度的影响[J].钢铁研究学报, 2006, 18(6):11-13.
[10]SHENFeng-man,JIANGXin, WUGang-sheng.Proper MgO addition in blast furnace operation[J]. ISIJ International,2006, 46(1):65-69.
[11]关雪芳,侯慧军,欧韬.提高烧结矿MgO含量的途径及高炉冶炼效果[J].烧结球团, 2001, 26(2):1-5.
[12]刘然,李红玮,李豪杰,等. MgO含量对低钛烧结矿质量的影响[J].钢铁钒钛, 2015, 36(3):73-77.
[13]范晓慧,李文琦,甘敏,等. MgO对高碱度烧结矿强度的影响及机理[J].中南大学学报:自然科学版, 2012,43(9):3325-3330.
[14]刘超,张玉柱,康月,等. MgO含量对低硅烧结成矿性能的影响[J].铸造技术, 2017,38(4):885-888.
[15]崔利民. MgO/Al2O3比对铁矿粉烧结液相生成的影响[D].唐山:华北理工大学, 2016.
[16]李志民,刘丽娜,段珊,等. MgO对含钛烧结矿矿相结构的影响[J].钢铁钒钛, 2014, 3(6):69-73.
[17]青格勒,吴铿,屈俊杰,等.不同含镁添加剂对球团矿工艺参数及质量的影响[J].钢铁, 2013, 48(7):17-2.
[18]许斌,熊林,杨永斌,等.白云石强化含氟铁精矿球团的研究[J].钢铁, 2008, 43(11):7-9.
[19]FanXH,GanM,JiangT,etal.InfluenceofFlux AdditivesonIronOreOxidizedPellets[J].JournalofCentral South University of Technology, 2010(17):730-732.
[20]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):17-19.
[21]陈铁军,张一敏,王昌安,等.镁橄榄石在铁矿球团中的应用试验研究[J].烧结球团, 2005, 4(2):1-2.
[22]高强健,魏国,何奕波,等. MgO对球团矿抗压强度的影响[J].东北大学学报:自然科学版, 2013,34(1):103-106.
[23]龙跃,徐晨光,张彦辉,等. MgO对高镁碱性球团矿强度的影响[J].钢铁钒钛, 2016,37(4):99-104.
[24]青格勒,王朝东,侯恩俭,等.低硅含镁球团矿抗压强度及冶金性能[J].钢铁研究学报, 2014,26(4):7-12.
[25]柳政根,储满生,陈立杰,等. MgO对钒钛矿综合炉料软溶滴落的影响[J].东北大学学报:自然科学版,2015,36(5):655-659.
[26]吕庆,王福佳,陈树军.烧结矿MgO含量对含钒钛炉料熔滴性能影响[J].钢铁研究学报, 2016,28(9):24-27.
[27]徐辉,邹宗树.浅谈高炉风口喷吹熔剂[J].中国冶金,2008, 18(1):24-27.
[28]李燕江.提高承钢高炉喷煤量的研究[D].唐山:华北理工大学, 2016. 47-50.
[29]郭宪臻,魏国,周永平,等.添加MgO对高炉喷煤煤粉燃烧率的影响[J].钢铁, 2011,46(7):7-9,25
[30]秦延华,高斌,周永平,等.高炉喷吹用煤添加氧化镁混合喷吹的试验研究[J].河南冶金, 2010,18(2):4-6.
[31]许莹,胡宾生,吴复尧,等.未燃煤粉对攀钢高炉炉渣冶金性能的影响[J].材料与冶金学报, 2005, 45(1):1-4.
[2]龙防,周国凡.富Al2O3高炉炉渣黏度试验研究[J].河南冶金, 2006, 14(1):11-14.
[3]常久柱,赵勇. Al2O3对唐钢高炉炉渣性能的影响[J].炼铁, 2004, 23(3):10-13.
[4]张振峰,吕庆,李福民.高Al2O3钒钛炉渣熔化性能的试验研究[J].东北大学学报:自然科学版, 2007, 28(10):1414-1416.
[5]王筱留.钢铁冶金学:炼铁部分[M].第2版.北京:冶金工业出版社, 2008. 107-125.
[6]张玉柱,耿明山,项利,等. MgO含量和碱度对高炉渣的黏度的影响[J].材料与冶金学报, 2005, 4(4):253-256.
[7] Kimura K, Tsukihashi F. Effect of Al2O3 and MgO addition onmeltingbehaviorofsinter[J].CAMP-ISIJ,2004,17:574-577.
[8]蒋大军,林千谷,甘勤,等. MgO对烧结矿与高炉渣冶炼性能及工艺参数影响的试验[J].中国冶金, 2010, 20(1):35-41.
[9]何环宇,王庆祥,曾小宁. MgO含量对高炉炉渣粘度的影响[J].钢铁研究学报, 2006, 18(6):11-13.
[10]SHENFeng-man,JIANGXin, WUGang-sheng.Proper MgO addition in blast furnace operation[J]. ISIJ International,2006, 46(1):65-69.
[11]关雪芳,侯慧军,欧韬.提高烧结矿MgO含量的途径及高炉冶炼效果[J].烧结球团, 2001, 26(2):1-5.
[12]刘然,李红玮,李豪杰,等. MgO含量对低钛烧结矿质量的影响[J].钢铁钒钛, 2015, 36(3):73-77.
[13]范晓慧,李文琦,甘敏,等. MgO对高碱度烧结矿强度的影响及机理[J].中南大学学报:自然科学版, 2012,43(9):3325-3330.
[14]刘超,张玉柱,康月,等. MgO含量对低硅烧结成矿性能的影响[J].铸造技术, 2017,38(4):885-888.
[15]崔利民. MgO/Al2O3比对铁矿粉烧结液相生成的影响[D].唐山:华北理工大学, 2016.
[16]李志民,刘丽娜,段珊,等. MgO对含钛烧结矿矿相结构的影响[J].钢铁钒钛, 2014, 3(6):69-73.
[17]青格勒,吴铿,屈俊杰,等.不同含镁添加剂对球团矿工艺参数及质量的影响[J].钢铁, 2013, 48(7):17-2.
[18]许斌,熊林,杨永斌,等.白云石强化含氟铁精矿球团的研究[J].钢铁, 2008, 43(11):7-9.
[19]FanXH,GanM,JiangT,etal.InfluenceofFlux AdditivesonIronOreOxidizedPellets[J].JournalofCentral South University of Technology, 2010(17):730-732.
[20]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):17-19.
[21]陈铁军,张一敏,王昌安,等.镁橄榄石在铁矿球团中的应用试验研究[J].烧结球团, 2005, 4(2):1-2.
[22]高强健,魏国,何奕波,等. MgO对球团矿抗压强度的影响[J].东北大学学报:自然科学版, 2013,34(1):103-106.
[23]龙跃,徐晨光,张彦辉,等. MgO对高镁碱性球团矿强度的影响[J].钢铁钒钛, 2016,37(4):99-104.
[24]青格勒,王朝东,侯恩俭,等.低硅含镁球团矿抗压强度及冶金性能[J].钢铁研究学报, 2014,26(4):7-12.
[25]柳政根,储满生,陈立杰,等. MgO对钒钛矿综合炉料软溶滴落的影响[J].东北大学学报:自然科学版,2015,36(5):655-659.
[26]吕庆,王福佳,陈树军.烧结矿MgO含量对含钒钛炉料熔滴性能影响[J].钢铁研究学报, 2016,28(9):24-27.
[27]徐辉,邹宗树.浅谈高炉风口喷吹熔剂[J].中国冶金,2008, 18(1):24-27.
[28]李燕江.提高承钢高炉喷煤量的研究[D].唐山:华北理工大学, 2016. 47-50.
[29]郭宪臻,魏国,周永平,等.添加MgO对高炉喷煤煤粉燃烧率的影响[J].钢铁, 2011,46(7):7-9,25
[30]秦延华,高斌,周永平,等.高炉喷吹用煤添加氧化镁混合喷吹的试验研究[J].河南冶金, 2010,18(2):4-6.
[31]许莹,胡宾生,吴复尧,等.未燃煤粉对攀钢高炉炉渣冶金性能的影响[J].材料与冶金学报, 2005, 45(1):1-4.
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