scholarly journals Empirical Study on Reduction Behavior and Metallurgical Properties of Vanadia–Titania Magnetite in Blast Furnace

Minerals ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 418
Author(s):  
Zhanwei He ◽  
Xiaojun Hu ◽  
Mo Lan ◽  
Jianxing Liu ◽  
Gongjin Cheng ◽  
...  
Keyword(s):  
Blast Furnace ◽  
Cohesive Zone ◽  
Molten Slag ◽  
Melting Zone ◽  
Chemical Compositions ◽  
Permeability Index ◽  
Tio2 Content ◽  
Reduction Behavior ◽  
Metallurgical Properties ◽  
The Core

The loss of permeability affects the reduction of the ferrous burden in the cohesive zone of a blast furnace (BF). Vanadia–titania magnetite (VTM) burden of various chemical compositions have different metallurgical properties. The reduction and softening-melting-dripping properties of different kinds of VTM were investigated. The results showed that the core of sinter or pellet is indirectly reduced to wustite and (Fe,Ti)Ox, and the periphery contains interlinked metallic iron and CaSiO3 in the cohesive zone. Wustite and (Fe,Ti)Ox are directly reduced in the melting-dripping zone. The aggregate (Fe, V, Cr) present in the non-dripping causes a loss of valuable components. With the increase in TiO2 content, the substrate phase of molten slag changes from melilite to titanaugite, and the mass of dripping decreases gradually. In addition, the permeability index S increased and the melting zone widened, which indicates that the increase in TiO2 content negatively affected the melting-dripping performance. The mass of the dripping is directly proportional to the pellet ratio. Considering the adverse effect of TiO2 on softening-melting-dripping properties, it is recommended that high TiO2 VTM is smelted while mixed with ordinary ores or with an increased pellet ratio in the burden structure.

Experimental Study of Softening and Melting Properties on Indonesia Vanadium-Titanium Sinters

2011 ◽  
Vol 284-286 ◽  
pp. 1039-1043 ◽  
Author(s):  
Qiang Jian Gao ◽  
Guo Wei ◽  
Lin Mu ◽  
Gang Du ◽  
Feng Man Shen
Keyword(s):  
Blast Furnace ◽  
Molten Slag ◽  
Softening Temperature ◽  
Melting Zone ◽  
Raw Material ◽  
Blast Furnace Process ◽  
Furnace Process ◽  
Melting Properties ◽  
Vanadium Titanium ◽  
Titanium Magnetite

As a raw material, Indonesia vanadium-titanium sinters are being applied to the blast furnace process for iron making in the typical iron and steel plant. In order to keep the health running of blast furnace process, in this work we have investigated the softening and melting properties of Indonesia vanadium-titanium sinters. We found that the content of vanadium-titanium magnetite in sinter is correlated with the softening and melting ranges for those sinters considered here. With the increasing of the vanadium-titanium magnetite in sinter, the starting softening temperature increases gradually and the final softening temperature increases as well, thereby the softening range becomes narrow. Both starting and final melting temperatures begin to ascent, and the variation of melting range is not obvious. In addition, we also found that the coke is wetted by the molten slag and iron. From the viewpoint of blast furnace process, the softening and melting zone has to move downward. In this zone of blast furnace the contact area of solid-liquid phase will get larger because of the close contract among the molten slag, iron and coke. On one hand, this kind of behavior can definitely speed up the reduction of iron oxide. On the other hand, it simultaneously worse the ventilation properties and affect the normal running of air flow, because a lot of iron and slag can not be got smoothly into the hearth through coke layer.

Reduction behavior of vanadium-titanium magnetite carbon composite hot briquette in blast furnace process

2019 ◽  
Vol 342 ◽  
pp. 214-223 ◽  
Author(s):  
Wei Zhao ◽  
Mansheng Chu ◽  
Hongtao Wang ◽  
Zhenggen Liu ◽  
Jue Tang ◽  
...  
Keyword(s):  
Blast Furnace ◽  
Carbon Composite ◽  
Blast Furnace Process ◽  
Reduction Behavior ◽  
Furnace Process ◽  
Vanadium Titanium ◽  
Titanium Magnetite

Effect of MgO addition on the metallurgical properties of the vanadium-titanium pellet with simulating blast furnace conditions

2018 ◽  
Vol 47 (4) ◽  
pp. 388-397 ◽  
Author(s):  
Wei Zhao ◽  
Mansheng Chu ◽  
Cong Feng ◽  
Hongtao Wang ◽  
Zhenggen Liu ◽  
...  
Keyword(s):  
Blast Furnace ◽  
Metallurgical Properties ◽  
Vanadium Titanium

scholarly journals Phase Transformation of Cohesive Zone in a Water-quenched Blast Furnace

2018 ◽  
Vol 58 (10) ◽  
pp. 1775-1780 ◽  
Author(s):  
Xiaoyue Fan ◽  
Kexin Jiao ◽  
Jianliang Zhang ◽  
Kaidi Wang ◽  
Zhiyu Chang
Keyword(s):  
Phase Transformation ◽  
Blast Furnace ◽  
Cohesive Zone

scholarly journals Reaction Model and Reduction Behavior of Carbon Iron Ore Composite in Blast Furnace

2009 ◽  
Vol 49 (6) ◽  
pp. 827-836 ◽  
Author(s):  
Shigeru Ueda ◽  
Kazunari Yanagiya ◽  
Kentaro Watanabe ◽  
Taichi Murakami ◽  
Ryo Inoue ◽  
...  
Keyword(s):  
Blast Furnace ◽  
Iron Ore ◽  
Reaction Model ◽  
Reduction Behavior ◽  
Carbon Iron
Sign in / Sign up

Export Citation Format

Share Document