scholarly journals Reduction of Iron Ore Pellets, Sinter, and Lump Ore under Simulated Blast Furnace Conditions

2020 ◽  
Vol 91 (11) ◽  
pp. 2000047 ◽  
Author(s):  
Anne Heikkilä ◽  
Mikko Iljana ◽  
Hauke Bartusch ◽  
Timo Fabritius
Keyword(s):  
Blast Furnace ◽  
Iron Ore ◽  
Iron Ore Pellets ◽  
Ore Pellets ◽  
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.

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

scholarly journals Dynamic and Isothermal Reduction Swelling Behaviour of Olivine and Acid Iron Ore Pellets under Simulated Blast Furnace Shaft Conditions

2012 ◽  
Vol 52 (7) ◽  
pp. 1257-1265 ◽  
Author(s):  
Mikko Iljana ◽  
Olli Mattila ◽  
Tuomas Alatarvas ◽  
Ville-Valtteri Visuri ◽  
Jari Kurikkala ◽  
...  
Keyword(s):  
Blast Furnace ◽  
Iron Ore ◽  
Swelling Behaviour ◽  
Iron Ore Pellets ◽  
Furnace Shaft ◽  
Ore Pellets ◽  
Isothermal Reduction ◽  
Reduction Swelling

Production Process Optimization of Mongolian Iron Ore Pellets for Baogang Group

2015 ◽  
Vol 751 ◽  
pp. 35-39
Author(s):  
Zhuo Tuan Guo ◽  
Yong Guo ◽  
Di Wu ◽  
Jun Peng ◽  
Yong Bing Wang ◽  
...  
Keyword(s):  
Blast Furnace ◽  
Production Process ◽  
Iron Ore ◽  
Reduction Process ◽  
Expansion Rate ◽  
Iron Ore Pellets ◽  
Ore Pellets ◽  
Preheating Temperature ◽  
Roasting Temperature ◽  
Roasting Time

Baogang Group imported large quantities of Mongolian iron ore to solve the shortage of ironmaking raw materials. But the basic parameters of Mongolian iron ore in pellets production are deficient. In this paper, orthogonal experimental method was used in the optimization of roasting production process of Mongolian iron ore pellets. The results show that when the content of Mongolian iron ore is 55%, the factors affecting the expansion rate of pellets in order of decrease is bentonite proportion, roasting temperature, roasting time and preheating temperature. For pellets containing 55% Mongolian iron ore, the optimum roasting schemes are as follows: bentonite proportion at 3.3%, roasting temperature at 700°C, roasting time at 14 minutes and preheating temperature at 1280°C. Under this roasting scheme, the expansion rate of pellets is 13.41%, and the compression strength reaches 2275N, which meets the technological requires of large blast furnace. The main phase of the Mongolian iron ore pellets is hematite, with a porosity of 25%-30%. And the content of gangue and liquid phase is relatively low, which is beneficial to the reduction process of pellets in blast furnace.

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