Two-step direct reduction of iron ore pellets by utilization of biomass: Effects of preheating temperature, pellet size and composition

2013 ◽  
Vol 5 (6) ◽  
pp. 063114 ◽  
Author(s):  
Siyi Luo ◽  
Yangmin Zhou ◽  
Chuijie Yi
Keyword(s):  
Iron Ore ◽  
Direct Reduction ◽  
Pellet Size ◽  
Iron Ore Pellets ◽  
Ore Pellets ◽  
Reduction Of Iron ◽  
Preheating Temperature ◽  
Direct Reduction Of Iron

Action rules of H2 and CO in gas-based direct reduction of iron ore pellets

2012 ◽  
Vol 19 (8) ◽  
pp. 2291-2296 ◽  
Author(s):  
Ling-yun Yi ◽  
Zhu-cheng Huang ◽  
Hu Peng ◽  
Tao Jiang
Keyword(s):  
Iron Ore ◽  
Direct Reduction ◽  
Iron Ore Pellets ◽  
Ore Pellets ◽  
Reduction Of Iron ◽  
Direct Reduction Of Iron

Effects of reductant type on coal-based direct reduction of iron ore tailings

2018 ◽  
Vol 42 (3) ◽  
pp. 453-466
Author(s):  
Wei WANG ◽  
Pengfei YE ◽  
Xiaoli ZHOU ◽  
C WANG ◽  
Zekun HUO ◽  
...  
Keyword(s):  
Iron Ore ◽  
Direct Reduction ◽  
Iron Ore Tailings ◽  
Reduction Of Iron ◽  
Direct Reduction Of Iron

A simplified approach to the simulation of direct reduction of iron ore

2010 ◽  
Vol 107 (5) ◽  
pp. 195-204 ◽  
Author(s):  
M. Vannucci ◽  
V. Colla ◽  
G. Corbo ◽  
S. Fera
Keyword(s):  
Iron Ore ◽  
Direct Reduction ◽  
Simplified Approach ◽  
Reduction Of Iron ◽  
Direct Reduction Of Iron

Evolution of Sintering of Particles that Compose Iron Ore Agglomerates

2017 ◽  
Vol 899 ◽  
pp. 371-376
Author(s):  
Flavia de Paula Vitoretti ◽  
Maria Carolina dos Santos Freitas ◽  
Camila Martins Hosken ◽  
Jose Adilson de Castro ◽  
Fabiane Roberta Freitas da Silva
Keyword(s):  
Iron Ore ◽  
Room Temperature ◽  
New Technologies ◽  
Microstructural Characterization ◽  
Sintering Process ◽  
Iron Ore Pellets ◽  
Ore Pellets ◽  
Reduction Of Iron ◽  
Increasing Demand ◽  
Metallurgical Characterization

The increasing demand for new technologies in the ironmaking/steelmaking field has been motivating several studies towards pelletizing process improvement. Within this context, evaluate the reduction of iron ore pellets using the dilatometer technique constitutes a promising approach for optimizing this process. This paper aims the metallurgical characterization through the sintering of particles in iron ore pellets. With this purpose, some experimental procedures are of concern as follows. Firstly, the kinetic densification of the iron ore pellets is measured using a dilatometer, which heats the samples up at 30 K/min until high temperatures about 1473 K and an isotherm at 10 minutes have been done. Then, the sample is cooled back to room temperature and undergoes a microstructural characterization, with the aid of a scanning electron microscope. At last, the density of the pellets is evaluated, using an Arquimedes Principle and consequently the porosity of the agglomerates. The results indicate the sintering progress of the particles that comprise the pellets as well as reduction the porosity. This behavior is due to the fact that the heat arising from gas induces the partial liquid phase formation and involves the agglomerate particles aiding in the sintering process.

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