Influence of MgO on mineral structure and metallurgical properties of blast furnace slag with medium titanium
DENG Mei-le1，HAN Xiu-li2，LIU Lei2，ZHANG Di2，LI Yun-gang1
（1. College of Meatllurgy and Energy， North China University of Science and Technology， Tangshan 063009， Hebei，China 2. College of Mining Engineering， North China University of Science and Technology， Tangshan 063009，Hebei， China）
Abstract：The mineral structure of blast furnace slag containing medium titanium with different mass percent of MgO (7%-16%) was studied by means of polarization microscope.The results show that the texture of the slag was porphyritic. the mineral compositions are mainly the rich titanium diopside and melilite，followed by spinel，perovskite，titanaugite，and finally a little of metallic iron，titanium nitride，titanium carbide and their solid solution. As the mass percent of MgO increased，the content of the perovskite and the rich titanium diopside reduced first and then increased，the contents of the titanaugite increased gradually and the contents of the melilite increased first and then decreased. When the mass percent of MgO reached 14%，The first phase of the high-melting spinel appeared，which resulted in higher voscosity and melting temperature of blast furnace slag，and the liquidity of blast furnace slag also became worse. The above results have a vital guiding significance on improving the liquidity of blast furnace slag with medium titanium.
收稿日期: 2015-06-09
出版日期: 2016-04-14
引用本文:
邓美乐，韩秀丽，刘 磊，张 玓，李运刚. MgO对中钛型高炉渣矿相结构及冶金性能的影响[J]. 钢铁, 2016, 51(4): 14-17.
DENG Mei-le，HAN Xiu-li，LIU Lei，ZHANG Di，LI Yun-gang. Influence of MgO on mineral structure and metallurgical properties of blast furnace slag with medium titanium. Iron and Steel, 2016, 51(4): 14-17.
任允芙。钢铁冶金岩相矿相学[M]。北京：冶金工业出版社，1982:218-220。(REN Yunfu．Petrography in steel metallurgy[M].Beijing:Metallurgical Industry Press, 1982:218-220.)
[9]
任允芙。钢铁冶金岩相矿相学[M]。北京：冶金工业出版社，1982:218-220。(REN Yunfu．Petrography in steel metallurgy[M].Beijing:Metallurgical Industry Press, 1982:218-220.)
[10]
徐恒旭，王海峰，唐道文, 等。MgO含量对中钛高炉渣粘度及熔化性温度影响研究[J]。现代机械，2011, 4:67-69。（XU Hengxu, WANG Haifeng, TANG Daowen, et al.Influence of MgO on the voscosity and the melting temperature blast furnace slag with medium titanium [J].Modem Machinery, 2011, 4(3):67-69.）
[10]
徐恒旭，王海峰，唐道文, 等。MgO含量对中钛高炉渣粘度及熔化性温度影响研究[J]。现代机械，2011, 4:67-69。（XU Hengxu, WANG Haifeng, TANG Daowen, et al.Influence of MgO on the voscosity and the melting temperature blast furnace slag with medium titanium [J].Modem Machinery, 2011, 4(3):67-69.）
2016, Vol. 51 
