Effects of Mineral Oxides on the Precipitation Micro-Morphology of Metallic Iron in the Reduction of Iron Oxides Under CO Atmosphere

2016 ◽  
pp. 317-325
Author(s):  
Zhancheng Guo ◽  
ZhiLong Zhao ◽  
Huiqing Tang ◽  
Jingtao Gao ◽  
Lin Lin
Keyword(s):  
Iron Oxides ◽  
Metallic Iron ◽  
Mineral Oxides ◽  
Reduction Of Iron ◽  
Micro Morphology

Reduction of iron oxides during the pyrometallurgical processing of red mud

2013 ◽  
Vol 2013 (1) ◽  
pp. 33-37 ◽  
Author(s):  
N. A. Raspopov ◽  
V. P. Korneev ◽  
V. V. Averin ◽  
Yu. A. Lainer ◽  
D. V. Zinoveev ◽  
...  
Keyword(s):  
Iron Oxides ◽  
Red Mud ◽  
Reduction Of Iron ◽  
Pyrometallurgical Processing

Highly active heterogeneous Fenton-like systems based on Fe0/Fe3O4 composites prepared by controlled reduction of iron oxides

2008 ◽  
Vol 83 (1-2) ◽  
pp. 131-139 ◽  
Author(s):  
Regina C.C. Costa ◽  
Flávia C.C. Moura ◽  
J.D. Ardisson ◽  
J.D. Fabris ◽  
R.M. Lago
Keyword(s):  
Iron Oxides ◽  
Heterogeneous Fenton ◽  
Highly Active ◽  
Reduction Of Iron

Surface structure effects on direct reduction of iron oxides by Shewanella oneidensis

2003 ◽  
Vol 67 (23) ◽  
pp. 4489-4503 ◽  
Author(s):  
Andrew L. Neal ◽  
Kevin M. Rosso ◽  
Gill G. Geesey ◽  
Yuri A. Gorby ◽  
Brenda J. Little
Keyword(s):  
Surface Structure ◽  
Iron Oxides ◽  
Direct Reduction ◽  
Shewanella Oneidensis ◽  
Reduction Of Iron ◽  
Direct Reduction Of Iron

Microstructure, Stiffness and Corrosion of Bare and Phosphated Specimens Made by Sintering of Structured Iron-Iron Oxide Spheres

2020 ◽  
Vol 405 ◽  
pp. 411-416
Author(s):  
Miriam Kupková ◽  
Martin Kupka ◽  
Renáta Oriňáková ◽  
Radka Gorejová
Keyword(s):  
Iron Oxide ◽  
Iron Oxides ◽  
Metallic Iron ◽  
Galvanic Corrosion ◽  
Iron Phosphate ◽  
Reduction Reaction ◽  
Diffusion Control ◽  
Iron Oxide Particles ◽  
Flow Through ◽  
Iron Iron

Granulated iron oxide particles were incompletely reduced to structured particles comprised metallic iron and residual iron oxides. Structured particles were pressed into prismatic compacts and sintered. Some of sintered specimens were subsequently phosphatized and calcined. Specimens with an iron phosphate coating were found stiffer than specimens without coating. In Hanks' solution, a galvanic corrosion was induced by more noble iron oxides coupled to a less noble metallic iron. This could explain higher corrosion potentials and higher rates of iron dissolution in comparison with a pure iron. The coating of specimens with iron phosphates shifted corrosion potentials towards more negative values and slowed down the dissolution of iron. This was most likely caused by a reduction in oxygen flow through the coating to iron-oxide cathodes, which has enhanced the influence of diffusion control on the kinetics of reduction reaction.

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