宝钢转底炉工艺技术发展
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摘要
宝钢从2005年开始调研、研发转底炉工艺技术,2015年在宝钢湛江开始建设转底炉生产线,2016年宝钢转底炉投产。经过污泥烘干工艺、配料工艺、压球工艺以及转底炉操作等方面的改进,实现了转底炉工艺达产达标,宝钢转底炉工艺技术达到了国际一流水平。宝钢转底炉工艺有效脱除了含铁含锌尘泥中的锌、钾、钠、铅和氯等有害杂质,转底炉生产的直接还原铁(DRI)返回钢铁生产、产生的蒸汽返回生产蒸汽管网和生产的锌粉作为锌冶炼原料,实现了含铁含锌尘泥资源综合利用。宝钢还探索用转底炉处理红土镍矿等工艺,为转底炉的拓展应用作了有益的探索。
From 2005,series surveys and researches of the RHF technology have been done in Baosteel,and in Zhanjiang base of Baowu Group,the first RHF production line has been constructed in 2015,which has been put into production in 2016. After a series of improvements for the production line,such as the sludge drying system,the material batching system,the briquetting process and the RHF operation technology,the RHF production line in Baosteel has reached the designing output and the standard,and it has already became a world-class RHF production line. Many harmful impurities,such as Zn,K,Na,Pb,Cl have been removed from the iron and the zinc bearing dust and sludge by the RHF process. The DRI production has been returned to the iron and steel production line,and the high temperature steam has been returned to the steam system,and the zinc powder has become the material for the zinc metallurgy process,so the iron and zinc bearing dust and sludge can be utilized well. Furthermore,the laterite nickel ore treating process has been explored in the RHF production line,and it is a good exploration for the RHF process developing.
From 2005,series surveys and researches of the RHF technology have been done in Baosteel,and in Zhanjiang base of Baowu Group,the first RHF production line has been constructed in 2015,which has been put into production in 2016. After a series of improvements for the production line,such as the sludge drying system,the material batching system,the briquetting process and the RHF operation technology,the RHF production line in Baosteel has reached the designing output and the standard,and it has already became a world-class RHF production line. Many harmful impurities,such as Zn,K,Na,Pb,Cl have been removed from the iron and the zinc bearing dust and sludge by the RHF process. The DRI production has been returned to the iron and steel production line,and the high temperature steam has been returned to the steam system,and the zinc powder has become the material for the zinc metallurgy process,so the iron and zinc bearing dust and sludge can be utilized well. Furthermore,the laterite nickel ore treating process has been explored in the RHF production line,and it is a good exploration for the RHF process developing.
引文
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[8]范晓慧,邱冠周,姜涛,等.我国直接还原铁生产的现状与发展前景[J].炼铁,2002,21(3):53.(FAN Xiao-hui,QIU Guanzhou,JIANG Tao,et al. Developing situation and prospect analysis on DRI production in China[J]. Ironmaking,2002,21(3):53.)
[9]沙永志,王凤岐,周渝生. Fastmet工艺评述[J].钢铁研究学报,1996,8(3):56.(SHAO Yong-zhi,WANG Feng-qi,ZHOU Yu-sheng. Comment on fastmet process[J]. Journal of Iron and Steel Research,1996,8(3):56.)
[10]周渝生.非高炉炼铁工艺的现状及其发展[J].世界钢铁,1997(2):1.(ZHOU Yu-sheng. Situation and development about nonBF ironmaking technology[J]. World Steel and Iron,1997(2):1.)
[11]赵庆杰.我国直接还原铁生产的现状[J].炼铁,1997,16(2):32.(ZHAO Qing-jie. Present situation of the production of direct reduction iron in China[J]. Ironmaking,1997,16(2):32.)
[2]许亚华.钢铁厂含锌尘泥的除锌工艺[J].上海金属,1998,20(2):38.(XU Ya-hua. Technology of zinc removal from zincbearing wastes in iron and steel works[J]. Shanghai Metals,1998,20(2):38.)
[3]刘自民,饶磊,桂满城.马钢含铁尘泥综合利用研究与实践[J].中国冶金,2018,28(9):71.(LIU Zi-min,RAO Lei,GUI Mancheng,et al. Research and practice of comprehensive utilization of Fe-containing dust in Masteel[J]. China Metallurgy,2018,28(9):71.)
[4]翁荣平.马钢转底炉系统试生产过程的实践摸索[C]//2011年全国冶金节能减排与低碳技术发展研讨会文集.唐山:中国金属学会,河北冶金学会,2011:538.(WENG Rong-ping.Practice exploring about experimental RHF production in Masteel[C]//Processing of Energy Saving and Low Carbon Technologies in Metallurgy Industry in 2011. Tangshan:The Chinese Society for Metals,Hebei Metallurgical Society,2011:538.)
[5]朱荣,任江涛,刘纲,等.转底炉工艺的发展与实践[J].北京科技大学学报,2007,29(6):171.(ZHU Rong,REN Jiang-tao,LIU Gang,et al. Development and practice on rotary hearth furnace ironmaking process[J]. Journal of University of Science and Technology Beijing,2007,29(6):171.)
[6]徐萌,任铁军,张建良,等.以转底炉技术利用钛资源的基础研究[J].有色金属(冶炼部分),2005(3):24.(XU Meng,REN Tie-jun,ZHANG Jian-liang,et al. Fundamental study on utilization of titanium resources by RHF process[J]. Non-ferrous Metals(Extractive Metallurgy),2005(3):24.)
[7]许海川,周和敏,齐渊洪,等.转底炉处理钢厂固废工艺的工程化及其生产实践[J].钢铁,2012,47(3):89.(XU Hai-chuan,ZHOU He-min,QI Yuan-hong,et al. Engineering and productive pracitce on rotary hearth furnace for steel dust and sludge[J]. Iron and Steel,2012,47(3):89.)
[8]范晓慧,邱冠周,姜涛,等.我国直接还原铁生产的现状与发展前景[J].炼铁,2002,21(3):53.(FAN Xiao-hui,QIU Guanzhou,JIANG Tao,et al. Developing situation and prospect analysis on DRI production in China[J]. Ironmaking,2002,21(3):53.)
[9]沙永志,王凤岐,周渝生. Fastmet工艺评述[J].钢铁研究学报,1996,8(3):56.(SHAO Yong-zhi,WANG Feng-qi,ZHOU Yu-sheng. Comment on fastmet process[J]. Journal of Iron and Steel Research,1996,8(3):56.)
[10]周渝生.非高炉炼铁工艺的现状及其发展[J].世界钢铁,1997(2):1.(ZHOU Yu-sheng. Situation and development about nonBF ironmaking technology[J]. World Steel and Iron,1997(2):1.)
[11]赵庆杰.我国直接还原铁生产的现状[J].炼铁,1997,16(2):32.(ZHAO Qing-jie. Present situation of the production of direct reduction iron in China[J]. Ironmaking,1997,16(2):32.)