Nuggets Production by Direct Reduction of High Iron Red Mud

In order to utilize the iron resource effectively in red mud, a laboratory experiment based on the orthogonal method was carried out. Nuggets were gotten by directly reducing the carbon-bearing pellets of red mud and coal. The results showed that the strongest influencing factor is temperature, and...

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Bibliographic Details
Published in:Journal of iron and steel research, international international, 2013-05, Vol.20 (5), p.24-27
Main Authors: GUO, Yu-hua, GAO, Jian-jun, XU, Hong-jun, ZHAO, Kai, SHI, Xue-feng
Format: Article
Language:English
Subjects:
Applied and Technical Physics
Coal
direct reduction
Engineering
Iron
Iron and steel industry
Iron and steel making
Machines
Manufacturing
Materials Engineering
Materials Science
Metallic Materials
nugget
orthogonal experiment
Pellets
Physical Chemistry
Processes
Red mud
resource utilization
Slags
Steels
实验室实验
影响因素
正交化方法
直接还原
碱性条件
金
高炉生产
高铁赤泥
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Summary:In order to utilize the iron resource effectively in red mud, a laboratory experiment based on the orthogonal method was carried out. Nuggets were gotten by directly reducing the carbon-bearing pellets of red mud and coal. The results showed that the strongest influencing factor is temperature, and the separation between liquid iron and slag is thoroughly. The nuggets can be gotten when the pellets, in which xC/xO is 1.6 and the basicity is 1.0, were maintained in 30 min at 1 400 ℃. The nuggets have a high TFe content which is higher than that in the hot metal produced in BF. It also has a low content of Si and Mn, but a high content of S and P. The main compositions of the slag are amorphous phase mainly containing SiO_2 and unreduced Fe_2SiO_4. Of course, a little reduced iron retains in it.
ISSN:1006-706X
2210-3988
DOI:10.1016/S1006-706X(13)60092-8