宝钢中间包内衬结构优化及保温技术应用
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摘要
通过优化宝钢中间包内衬保温配置研究,获得了一套安全、稳定、长寿、节能和保温的中间包内衬耐火材料的配置技术,即由普通的砖砌型中间包改为采用纳米微孔隔热板、轻质保温砖以及低水泥半轻质莫来石浇注料整体浇注的中间包,不仅使包壳降温更加明显,而且减少了中间包浇铸过程中的钢水温降和温度波动,提高了铸坯品质。
A set of safe,stable,long-life,energy saving and heat insulation refractories configuration technology was obtained by optimizing the lining insulation configuration of tundish in Baosteel. That is,the normal brick-laying tundish was changed to the integral casting tundish using nano microporous insulating boards,light-weight insulating brick and low cement semi-light-weight mullite castables. After optimizing,not only the temperature drop of tundish shell was obvious,but also the temperature drop and temperature fluctuation of molten steel during casting were reduced,and the quality of cast billets was improved.
A set of safe,stable,long-life,energy saving and heat insulation refractories configuration technology was obtained by optimizing the lining insulation configuration of tundish in Baosteel. That is,the normal brick-laying tundish was changed to the integral casting tundish using nano microporous insulating boards,light-weight insulating brick and low cement semi-light-weight mullite castables. After optimizing,not only the temperature drop of tundish shell was obvious,but also the temperature drop and temperature fluctuation of molten steel during casting were reduced,and the quality of cast billets was improved.
引文
[1]叶昌松,魏耀武,李楠.含纳米CaCO3的镁钙中间包涂料对锰钢中Mn、C和总氧含量的影响[J].耐火材料,2016,50(2):119-121+132.
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[7]陈昌平,张厚兴,王文学,等.树脂复配SiO2微粉对镁质中间包轻质涂料力学性能和流变性能的影响[J].耐火材料,2018,52(2):144-147.
[8]郑玉,张国栋,高洪月,等.三聚磷酸钠加入量对镁钙质中间包干式料烧结性能的影响[J].耐火材料,2017,51(1):47-49.
[9]张美杰,黄奥,顾华志,等.连铸中间包耐火材料的冲蚀特性与控流装置的优化设置[J].武汉科技大学学报,2010,33(5):449-452.
[2]徐勇.连铸中间包用干式振动料的研究进展[J].耐火材料,2018,52(5):389-395.
[3]KIM T S,CHUNG Y,HOLAPPA L,et al.Effect of rice husk ash insulation powder on the reoxidation behavior of molten steel in continuous casting tundish[J].Metallurgical and Materials Transactions B,2017,48(3):1736-1747.
[4]SAVAGE J,PRITCHARD W H.The problem of rupture of the billet in the continuous casting of steel[J].Journal of the Iron and Steel Institute,1954,178(3):269-277.
[5]BRIMACOMBE J K,SORIMACHI K.Crack formation in the continuous casting of steel[J].Metallurgical Transactions B,1977,8(2):489-505.
[6]李永力,王文学,卢作涛,等.中间包耐火材料结构优化改进与实践[J].耐火材料,2017,51(2):149-151.
[7]陈昌平,张厚兴,王文学,等.树脂复配SiO2微粉对镁质中间包轻质涂料力学性能和流变性能的影响[J].耐火材料,2018,52(2):144-147.
[8]郑玉,张国栋,高洪月,等.三聚磷酸钠加入量对镁钙质中间包干式料烧结性能的影响[J].耐火材料,2017,51(1):47-49.
[9]张美杰,黄奥,顾华志,等.连铸中间包耐火材料的冲蚀特性与控流装置的优化设置[J].武汉科技大学学报,2010,33(5):449-452.