Granulation behaviour of a sinter mixture with high …
Sinter is the most widely used iron-bearing material in the majority of world's blast furnaces [1,2] and its production involves two main steps, the granulation (cold agglomeration) and the high-temperature sintering.The performance of the sintering machine is closely related to the granulation step, which aims to produce larger and homogeneous granules from fine raw …
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Kinetics of iron ore sinter feed granulation
Sinter feed granulation differs from pelletization of fines because of the very wide size distribution (minus 8 mm, plus 0 mm). On addition of water, the fine material very quickly …
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Granulation Effectiveness of Iron Ore Sinter Feeds: Effect of …
Granulation of sinter feeds is an indispensable step in the iron ore sintering process. Through granulating, iron ore fines, fluxes, fuels and recycle materials (e.g., return fines, dust, etc.) are made into granules that possess appropriate moisture, reasonable size distribution and good bed permeability for sintering.The granulation behavior of a particular ore mix determines the …
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Iron Ore Sinter
Automated optical image analysis of natural and sintered iron ore. E. Donskoi, ... J.R. Manuel, in Iron Ore, 2015 4.2.2 Sinter. Low-temperature (< 1300 °C) iron ore sinter is an agglomerate of unmelted and partially melted nuclei particles (+ 1 mm) and a matrix bonding phase produced from the melting of fine ore (− 1 mm) and flux particles, with the majority of melt formation …
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Granulation Effectiveness of Iron Ore Sinter Feeds: Effect …
This paper developed a quantitative understanding of the effect of ore properties on granulation effectiveness for different iron ore types based on the mechanistic model proposed by J.D. Litster ...
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Voidage of Ferrous Sinter Beds: New Measurement …
The technique is reproducible to ±0.005 void fraction. This technique is used to study in detail the factors which determine the voidage of packed beds of granulated ferrous sinter feed. 10 ...
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Improvement of Sinter Productivity by Adding Return Fine …
[Show full abstract] factors which determine the voidage of packed beds of granulated ferrous sinter feed. 10 sinter feed blends are used varying the type of ore (7 ores), feed size distribution ...
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Iron Ore Fines Granulation in a New High Speed Mixing Granulator …
Rankin WJ, Roller PW (1985) The measurement of void fraction in beds of granulated iron ore sinter feed. Trans Iron Steel Inst Jpn 25(10):1016–1020. Article CAS Google Scholar Cores A, Muñiz M, Ferreira S, Robla JI, Mochón J (2012) Relationship between sinter properties and iron ore granulation index.
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Control of the grain size distribution of T the raw …
fraction and the –0.5 mm coke breeze fraction improves the granulation index and permeability of the green sinter bed16. This led to a suppression in the shrinkage of the sinter cake, an increase in sintering rate (and therefore productivity), as well as improved reducibility due to an increase in the number of fine pores.
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Eff ects of Fine Iron Ore on Sinter Resistance and Permeability
Since iron ore proportion is at higher side in the sinter mix, its size fraction is very important. JSW Steel sinter plant receives iron ore fines of-10 mm size from Bellary-Hospet region which consist of 3 to 9% bigger than 10 mm and 30 to 35% smaller than 0.15 mm size fraction. ... In order to maintain iron content and gangue levels of sinter ...
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Study of iron ore sinter when fine ore is replaced with …
The effect of replacing fine iron ore by coarse iron ore in the sinter mixture on sinter properties was studied using an infrared furnace and sinter pot tests. A two-level full factorial design was used for the identification of parameters that ... Study of iron ore sinter when fine ore is replaced with coarse ore, using infrared furnace and ...
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-Effect of the use of pellet feed replacing regular sinter …
The fraction of fine particles smaller than a specific cut size was also measured, and was defined as the relative quantity of fine particles under a specific cut size in the granules to those in ...
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Granulation Effectiveness of Iron Ore Sinter Feeds: Effect …
Granulation of sinter feeds is an indispensable step in the iron ore sintering process. Through granulating, iron ore fines, fluxes, fuels and recycle materials (e.g., return fines, dust, etc.) are …
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Kinetics of iron ore sinter feed granulation
The kinetics of iron ore sinter feed granalation were shown to have a major impact on granule size distribution. At laboratory scale, it was shown that granule growth continued until a maximum stable size distribution was achieved. ... Nagano et al. [6] reported that the volume fraction of very fine particles (< 0.125 mm) must be low in order ...
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COMPARISON OF SINTER AND PELLET USAGE IN AN
expense of sinter feed due to declining availability of high-quality sinter fine ... Figure 3 below shows the dependence between sinter strength, defined as fraction > 10mm after tumbler test, and ...
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Reductants in iron ore sintering: A critical review
The granulated ore requires suitable granulometry for furnace reduction, whereas sinter feed and pellet feed, being fine ore fractions, cannot be directly used due to potential furnace clogging and gas transport impediments (Mohammad et al., 2023).
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Three-dimensional characterization of porosity in iron ore …
The granulated ore requires suitable granulometry for furnace reduction, whereas sinter feed and pellet feed, being fine ore fractions, ... 2023). For a long time, the coarse ore fraction was loaded into blast furnaces, while the fine fraction accumulated in piles without economic value. To make use of this ore fraction, agglomeration ...
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Granulation behaviour of a sinter mixture with high …
The present study investigated the influence of high proportions of pellet feed (two different particle sizes) on the cold agglomeration behaviour of a sinter mixture and the properties of the ...
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(PDF) Ore mineralogy and its relevance for selection of concentration
spiraling for fine sinter feed, deslimi ng and flotat ion (column only), products ar e tra nsport ed by 5 km lon g convey or belt syste m to Andaim e train load ing termina l
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Analysis of a compact iron ore sintering process based on …
The raw materials used in the iron ore sintering process are obtained from several sources, like iron ore (mining sinter feed), dust recycling from the steelworks facilities and necessary addition of slag agents for blast furnace and to enhance the sinter product quality, namely reactivity and mechanical strength, which plays crucial role on ...
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Modeling of Reduction Degradation of Iron Ore Sinter by Feed …
The target consisted of daily values of RDI, in which 500 grams of the 10.0-12.5 mm fraction of crushed sinter is exposed to a reducing atmosphere. The outcome of the analysis is the mass percentage of the fraction that is less than 3.15 mm "in diameter" after careful tumbling of the processed sample.
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Granulation Behavior of an Iron Ore Sintering Mixture …
The chief reasons were related to particle shape and the fraction of fine particles. Smaller particle size results in a higher order of bonding between particles and therefore the formation of a stronger system. ... For a complete chemical and mineralogical characterization of the pellet feed, sinter feeds, as well as of the raw materials used ...
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Understanding Sinter and Sinter Plant Operations
Its granulometric distribution is an important process parameter for sinter quality. The 10-30 mm fraction is sent directly to the blast furnace storage bins, the larger fraction is crushed to obtain smaller sized fractions, and the minus 5 mm fraction (return fines) is recycled to the sinter plant hoppers. ... to obtain a minimum of 90 % of ...
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Development of a 3-D Sinter Process Mathematical
The model is based on conservation equations for mass, momentum energy and mass fraction of chemical species of gas, solid phases: sinter feed, fine sinter (returned fine sinter<5mm), coke breeze ...
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Control of the grain size distribution of T the raw …
fraction and the –0.5 mm coke breeze fraction improves the granulation index and permeability of the green sinter bed 16 . This led to a suppression in the shrinkage of the sinter cake,
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Influence of Iron Ore Fines Feed Size on Microstructure, …
Sinter with iron ore mean particle size of 2.59 mm (Classifier fines) yielded better sinter strength with lower fines (–5 mm) and lower RDI. Higher sinter strength is due to effective distribution of …
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COMPARISON OF SINTER AND PELLET USAGE IN AN …
expense of sinter feed due to declining availability of high-quality sinter fine resources. In Figures 1 and 2, the growth of the seaborne trade and Hatch's ... Figure 3 below shows the dependence between sinter strength, defined as fraction > 10mm after tumbler test, …
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Influence of Iron Ore Fines Feed Size on Microstructure, …
Several sinter plants are using smaller than 10 mm size as sinter feed with maximum 15% –0.150 mm size fines. We have been sintering –10 mm particles of iron ore fines, which consist of 3 to …
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Effect of Metallic Iron Sinter Feed on Sinter Mineralogy and Quality
Effects of Metallic Content on Sinter Cooling Rates. Figure 2 shows the temperature readings registered by thermocouples during sintering and cooling at low vacuum (4-in. Hg or 13.5 kPa) and high vacuum (6-in. Hg or 20.1 kPa) condition. It can be seen that high metallic iron feed (HI) sintering test had lower peak temperature at upper part of bed and …
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Granulation behaviour of specularite fines in ferrous sinter …
Granulation of the sinter feed mix is a key step in the overall sintering process (Litster and Waters, 1988). Therefore, it is important to investigate the granulation behaviour of …
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