scholarly journals A Short Review of the Effect of Iron Ore Selection on Mineral Phases of Iron Ore Sinter

Minerals ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 35
Author(s):  
Junwoo Park ◽  
Eunju Kim ◽  
In-kook Suh ◽  
Joonho Lee
Keyword(s):  
Iron Ore ◽  
Short Review ◽  
Liquid Phase Sintering ◽  
Iron Ores ◽  
Sintering Process ◽  
Iron Ore Sintering ◽  
Agglomeration Process ◽  
Mineral Phases ◽  
Iron Ore Sinter ◽  
Coal Particles

The sintering process is a thermal agglomeration process, and it is accompanied by chemical reactions. In this process, a mixture of iron ore fines, flux, and coal particles is heated to about 1300 °C–1480 °C in a sinter bed. The strength and reducibility properties of iron ore sinter are obtained by liquid phase sintering. The silico-ferrite of calcium and aluminum (SFCA) is the main bonding phase found in modern iron ore sinters. Since the physicochemical and crystallographic properties of the SFCA are affected by the chemical composition and mineral phases of iron ores, a crystallographic understanding of iron ores and sintered ore is important to enhance the quality of iron ore sinter. Scrap and by-products from steel mills are expected to be used in the iron ore sintering process as recyclable resources, and in such a case, the crystallographic properties of iron ore sinter will be affected using these materials. The objective of this paper is to present a short review on research related to mineral phases and structural properties of iron ore and sintered ore.

scholarly journals Iron-Ore Sintering Process Optimization / Optymalizacja Procesu Aglomeracji Rudy Żelaza

2015 ◽  
Vol 60 (4) ◽  
pp. 2895-2900 ◽  
Author(s):  
M. Fröhlichová ◽  
D. Ivanišin ◽  
A. Mašlejová ◽  
R. Findorák ◽  
J. Legemza
Keyword(s):  
Iron Content ◽  
Iron Ore ◽  
Raw Materials ◽  
Size Composition ◽  
Sintering Process ◽  
Iron Ore Sintering ◽  
Iron Ore Sinter ◽  
A Charge ◽  
Iron Ore Concentrate

The work deals with examination of the influence of the ratio between iron ore concentrate and iron ore on quality of produced iron ore sinter. One of the possibilities to increase iron content in sinter is the modification of raw materials ratio, when iron ore materials are added into sintering mixture. If the ratio is in favor of iron ore sinter, iron content in resulting sintering mixture will be lower. If the ratio is in favor of iron ore concentrate and recycled materials, which is more finegrained, a proportion of a fraction under 0.5 mm will increase, charge permeability property will be reduced, sintering band performance will decrease and an occurrence of solid particulate matter in product of sintering process will rise. The sintering mixture permeability can be optimized by increase of fuel content in charge or increase of sinter charge moisture. A change in ratio between concentrate and iron ore has been experimentally studied. An influence of sintering mixture grain size composition, a charge grains shape on quality and phase composition on quality of the produced iron sinter has been studied.

Quality Estimation for the Iron Ore Sinter Obtained via Separate Blend Preparation

2020 ◽  
Vol 844 ◽  
pp. 114-123
Author(s):  
Volodymyr Bochka ◽  
Artem Sova ◽  
Lina Kieush ◽  
Oleksandr Hryshyn ◽  
Alisa Dvoiehlazova
Keyword(s):  
Iron Ore ◽  
Mineralogical Composition ◽  
Equivalent Diameter ◽  
Sintering Process ◽  
Iron Ore Sintering ◽  
Positive Effects ◽  
Iron Ore Sinter ◽  
Iron Ore Sintering Process ◽  
Ore Sintering

This paper reveals that obtaining high-quality sinter, improved or stabilized by its size and strength, is a challenge to be solved by embracing both the formation of sinter with the strong structure and the optimal mineralogical composition of its bonds during the preparation of the sintering blend. The existing technological schemes of iron ore sintering do not allow producing the sinter where the amounts of fines with 0-0.5 mm of fraction would be less than the typical amounts of 8.1-20.4%. Therefore, the study to establish how the blend preparation with the preliminary made composites affects the parameters of iron ore sintering process and the quality of the resulting sinter has been carried out. It has determined that the use of separate pre-granulation has commonly positive effects on the process of blend preparation, namely it significantly decreases the amount of non-granulated fraction of 0-1 mm and increases the equivalent diameter of the granules, reduces the standard deviation and variation coefficient, indicating the more homogeneous granulometric composition of raw granules.

A novel performance assessment method of the carbon efficiency for iron ore sintering process

2021 ◽  
Vol 106 ◽  
pp. 44-53
Author(s):  
Kailong Zhou ◽  
Xin Chen ◽  
Min Wu ◽  
Yosuke Nakanishi ◽  
Weihua Cao ◽  
...  
Keyword(s):  
Performance Assessment ◽  
Iron Ore ◽  
Assessment Method ◽  
Sintering Process ◽  
Iron Ore Sintering ◽  
Carbon Efficiency ◽  
Iron Ore Sintering Process ◽  
Ore Sintering

scholarly journals Formation of Nitrogen Mono Oxide (NO) during Iron Ore Sintering Process

2018 ◽  
Vol 58 (2) ◽  
pp. 236-243 ◽  
Author(s):  
Wei Lv ◽  
Xiaohui Fan ◽  
Xiaobo Min ◽  
Min Gan ◽  
Xuling Chen ◽  
...  
Keyword(s):  
Iron Ore ◽  
Sintering Process ◽  
Iron Ore Sintering ◽  
Iron Ore Sintering Process ◽  
Ore Sintering

scholarly journals Speciation of PM2.5 Released from Iron Ore Sintering Process and Calculation of Elemental Equilibrium

2017 ◽  
Vol 57 (4) ◽  
pp. 673-680 ◽  
Author(s):  
Zhiyun Ji ◽  
Xiaohui Fan ◽  
Min Gan ◽  
Qiang Li ◽  
Xuling Chen ◽  
...  
Keyword(s):  
Iron Ore ◽  
Sintering Process ◽  
Iron Ore Sintering ◽  
Iron Ore Sintering Process ◽  
Ore Sintering

scholarly journals The use of ammonium sulfate as an inhibitor of dioxin synthesis in iron ore sintering process

2014 ◽  
Vol 21 (1) ◽  
pp. 59-70 ◽  
Author(s):  
Patrycja Łechtańska ◽  
Grzegorz Wielgosiński
Keyword(s):  
Ammonium Sulfate ◽  
Air Pollutants ◽  
Iron Ore ◽  
Sintering Process ◽  
Blast Furnace Process ◽  
Furnace Process ◽  
Iron Ore Sintering ◽  
Iron Ore Sintering Process ◽  
Ore Sintering ◽  
Main Component

Abstract The main air pollutants in the sintering process of iron ore are polychlorinated dibenzo-p-dioxins, polychlorinated dibenzofurans (PCDD/Fs) and harmful dust. Ore sintering on sinter strands is one of the first technology steps in the ironworks. It is a process in which iron ore is crushed, subjected to annealing and mixed with appropriate additives, and then sintered in order to produce sinter which is the main component of iron in the blast furnace process. PCDD/Fs emissions were measured and the addition of ammonium sulfate as an inhibitor of the synthesis of dioxins in the sintering process of iron ore was studied.

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