(1. State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, China 2. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China)
Abstract:Softening-melting dropping characteristics of pre-reduction burden with the different degree of metallization, contained certain carbon were investigated. The results show that although the softening temperature interval of the pre-reduction burden is larger than that of the original burden; however charge column pressure drop is less. In the melting and dropping temperature interval, the melting start temperature increases with increasing metallization rate of burden, the dropping temperature reduces with increasing carbon content in molten iron, the maximum pressure drop of the charge column decreases with increasing metallization rate. SD decreases with increasing metallization rate or increasing carbon content. It is speculated that pre-reduction burden included a certain degree carbon content is benefit to increase spaces of soften layer, decrease the thickness of melting layer, and thus improve the permeability of cohesive zone.
Yutaka Ujisawa,Kaoru Nakano,Yoshinori Matsukura,et al.Subjects for Achievement of Blast Furnace Operation with Low Reducing Agent Rate[J].ISIJ International,2005,45(10):1379-1385
[1]
Yutaka Ujisawa,Kaoru Nakano,Yoshinori Matsukura,et al.Subjects for Achievement of Blast Furnace Operation with Low Reducing Agent Rate[J].ISIJ International,2005,45(10):1379-1385
[2]
Kohei Sunahara,Takuya Natsui,Kyoichiro Shizawa,et al.Effect of Coke Reactivity on Sinter Softening-melting Property by Simultaneous Evaluation Method of Carbonaceous and Ferrous Burdens in Blast Furnace[J].ISIJ International,2011,51(8):1322-1332
[2]
Kohei Sunahara,Takuya Natsui,Kyoichiro Shizawa,et al.Effect of Coke Reactivity on Sinter Softening-melting Property by Simultaneous Evaluation Method of Carbonaceous and Ferrous Burdens in Blast Furnace[J].ISIJ International,2011,51(8):1322-1332
[3]
Shengli Wu,Hongliang Han,Haifa Xu,et al.Increasing Lump Ores Proportion in Blast Furnace Based on the High-temperature Interactivity of Iron Bearing Materials[J].ISIJ International,2010,50(5):686-694
[3]
Shengli Wu,Hongliang Han,Haifa Xu,et al.Increasing Lump Ores Proportion in Blast Furnace Based on the High-temperature Interactivity of Iron Bearing Materials[J].ISIJ International,2010,50(5):686-694
[4]
Huifen Yanga,Lili Jinga,Baogang Zhang.Recovery of Iron from Vanadium Tailings with Coal-based Direct Reduction Followed by Magnetic Separation[J].Journal of Hazardous Materials,2011,185(2):1405-1411
[4]
Huifen Yanga,Lili Jinga,Baogang Zhang.Recovery of Iron from Vanadium Tailings with Coal-based Direct Reduction Followed by Magnetic Separation[J].Journal of Hazardous Materials,2011,185(2):1405-1411
[5]
Hideki Ono-nakazato,Chikahito Sugahara,Tateo Usui.Effect of Slag Components on Reducibility and Melt Formation of Iron Ore Sinter[J].ISIJ International,2002,42(5):558-560
[5]
Hideki Ono-nakazato,Chikahito Sugahara,Tateo Usui.Effect of Slag Components on Reducibility and Melt Formation of Iron Ore Sinter[J].ISIJ International,2002,42(5):558-560
[6]
Ichiro Shigak,Shoji Shirouchi,Kunihiko Tokutak,et al.Study and Improvement of Properties of Pellets Reduction Retardation and Melt-down[J].ISIJ International,1990,30(3):199-207
[6]
Ichiro Shigak,Shoji Shirouchi,Kunihiko Tokutak,et al.Study and Improvement of Properties of Pellets Reduction Retardation and Melt-down[J].ISIJ International,1990,30(3):199-207
[7]
Hiroyuki Mizoguchi,Hironori Suzuki,Shoji Hayashi.Influence of Mixing Coal Composite Iron Ore Hot Briquettes on Blast Furnace Simulated Reaction Behavior in a Packed Mixed Bed[J].ISIJ International,2011,51(8):1247-1254
[7]
Hiroyuki Mizoguchi,Hironori Suzuki,Shoji Hayashi.Influence of Mixing Coal Composite Iron Ore Hot Briquettes on Blast Furnace Simulated Reaction Behavior in a Packed Mixed Bed[J].ISIJ International,2011,51(8):1247-1254
[8]
Yuki Tanaka,Tomohiro Ueno,Keiji Okumura,et al.Reaction Behavior of Coal Rich Composite Iron Ore Hot Briquettes under Load at High Temperatures until 1 400°C[J].ISIJ International,2011,51(8):1240-1246
[8]
Yuki Tanaka,Tomohiro Ueno,Keiji Okumura,et al.Reaction Behavior of Coal Rich Composite Iron Ore Hot Briquettes under Load at High Temperatures until 1 400°C[J].ISIJ International,2011,51(8):1240-1246
[9]
Morimasa Ichida,KazuhirO Nishihara,Kenji Tamur,et al.Influence of Ore/Coke Distribution on Burden in Blast Furnace Descending and Melting Behavior of Burden in Blast Furnace[J].ISIJ International,1991,31(5):505-514
[9]
Morimasa Ichida,KazuhirO Nishihara,Kenji Tamur,et al.Influence of Ore/Coke Distribution on Burden in Blast Furnace Descending and Melting Behavior of Burden in Blast Furnace[J].ISIJ International,1991,31(5):505-514
[10]
Tsunehisa Nishimura,Kenichi Higuchi,Masaaki Natio,et al.Evaluation of Softening,Shrinking and Melting Reduction Behavior of Raw Materials for Blast Furnace[J].ISIJ International,2011,51(8):1316-1321
[10]
Tsunehisa Nishimura,Kenichi Higuchi,Masaaki Natio,et al.Evaluation of Softening,Shrinking and Melting Reduction Behavior of Raw Materials for Blast Furnace[J].ISIJ International,2011,51(8):1316-1321
[11]
Shiro Watakabe,Kanji Takeda,Hirobumi Nisimura,et al.Development of High Ratio Coke Mixed Charging Technique to the Blast Furnace[J].ISIJ International,2006,46(4):513-522
[11]
Shiro Watakabe,Kanji Takeda,Hirobumi Nisimura,et al.Development of High Ratio Coke Mixed Charging Technique to the Blast Furnace[J].ISIJ International,2006,46(4):513-522
[12]
P.Kaushik,RJ.Fruehan. Mixed Burden Softening and Melting Phenomena in Blast Furnace Operation Part 3-Mechanism of Burden Interaction and Melt Exudation Phenomenon[J].Ironmaking and Steelmaking,2007,34(1):10-22
[12]
P.Kaushik,RJ.Fruehan. Mixed Burden Softening and Melting Phenomena in Blast Furnace Operation Part 3-Mechanism of Burden Interaction and Melt Exudation Phenomenon[J].Ironmaking and Steelmaking,2007,34(1):10-22
E.Mousa,DSenk,A. Babich. Reduction of Pellets-Nut Coke Mixture under Simulating Blast Furnace Conditions[J].Steel Research International,2010,81(9):706-715
[16]
E.Mousa,DSenk,A. Babich. Reduction of Pellets-Nut Coke Mixture under Simulating Blast Furnace Conditions[J].Steel Research International,2010,81(9):706-715