Microwaves for Reduction of Iron Ore Pellet by Carbon

1994 ◽  
Vol 366 ◽  
Author(s):  
Idalia Gomez ◽  
Juan A. Aguilar
Keyword(s):  
Heat Supply ◽  
Iron Ore ◽  
Heat Transfer Process ◽  
Reduction Kinetics ◽  
Iron Ore Pellets ◽  
Ore Pellets ◽  
Metallic Oxides ◽  
Reduction Of Iron ◽  
Iron Ore Pellet ◽  
Work Done

ABSTRACTResults of reducibility tests of reduction conducted on iron ore pellets by carbon are presented in this work. Work done is centered on reduction kinetics by carbon with conventional heat supply (heat transfer process) compared with reduction kinetics where heat is supplied by microwaves to whole volume. Ore used in this work is called “Alzada” which has reducibility characteristics well known, and is often used as standard for comparison. Importance of using actual pellet instead of dust is pointed. This work is part of a project related with microwaves for reduction of metallic oxides.

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.

Morphology and reduction kinetics of fluxed iron ore pellets

2000 ◽  
Vol 27 (3) ◽  
pp. 194-201 ◽  
Author(s):  
S. Prakash ◽  
M.C. Goswami ◽  
A.K.S. Mahapatra ◽  
K.C. Ghosh ◽  
S.K. Das ◽  
...  
Keyword(s):  
Iron Ore ◽  
Reduction Kinetics ◽  
Iron Ore Pellets ◽  
Ore Pellets ◽  
Kinetics Of

Reduction of iron-ore pellets in a rotary furnace

2008 ◽  
Vol 38 (12) ◽  
pp. 1020-1023
Author(s):  
V. S. Rybkin ◽  
K. G. Podkovyrkin ◽  
N. G. Korshunova ◽  
A. V. Bakov ◽  
V. A. Gorbachev ◽  
...  
Keyword(s):  
Iron Ore ◽  
Rotary Furnace ◽  
Iron Ore Pellets ◽  
Ore Pellets ◽  
Reduction Of Iron

Study on intrinsic reaction behavior and kinetics during reduction of iron ore pellets by utilization of biochar

2018 ◽  
Vol 158 ◽  
pp. 1-8 ◽  
Author(s):  
Qiang Hu ◽  
Dingding Yao ◽  
Yingpu Xie ◽  
Youjian Zhu ◽  
Haiping Yang ◽  
...  
Keyword(s):  
Iron Ore ◽  
Reaction Behavior ◽  
Iron Ore Pellets ◽  
Ore Pellets ◽  
Reduction Of Iron

scholarly journals PRODUCTION OF IRON ORE PELLETS BY UTILIZATION OF SUNFLOWER HUSKS

2021 ◽  
Vol 27 (4) ◽  
pp. 167-171
Author(s):  
Andrii Koveria ◽  
Lina Kieush ◽  
Maksym Boyko ◽  
Maksym Yaholnyk ◽  
Natalia Poliakova
Keyword(s):  
Natural Gas ◽  
Global Economy ◽  
Iron Ore ◽  
Steel Production ◽  
Iron And Steel ◽  
Iron Ore Pellets ◽  
Ore Pellets ◽  
Iron Ore Pellet ◽  
Mitigate Climate Change

Steel production is the most dynamic industry and one of the key sectors for the development of the global economy. The growing production of iron ore increases the need for its beneficiation and granulating for subsequent use in the production of iron and steel. As a result, the number of CO2 emissions and harmful substances increases, which negatively affects both society and the environment. It is important to study the use of biomass for the production of iron ore pellets. Lignocellulosic biomass is a renewable and sustainable source of heat and energy that can mitigate climate change. The efficiency of using sunflower husks on the combined machine “straight grate - rotary kiln - annular cooler” to partially replace natural gas in the production of iron ore pellets has been studied. The influences of alternative fuel use on technological indicators of the process and quality of iron ore pellets have been analyzed. It was found that the combustion of sunflower husks generates enough heat to obtain iron ore pellets with good strength. The main indicators of the quality of iron ore pellets remain at the same level as the iron ore pellet quality when using natural gas.

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