Iron ore pelletization
Table 15.14 lists the typical mineral phases present in iron ore pellets, while Figure 15.16 shows two typical microstructures of pellets produced from magnetite and hematite pellet feeds. While the main bonding phase of the pellets is recrystallized Fe 2 O 3, there are some key differences in the microstructures of pellets produced from ...
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Analysis of the Influence of Blaine Numbers and Firing …
The RSM-I-optimal predicted responses with a coefficient of determination (R2) of 0.89 for CCS and 0.91 for AP of iron ore pellets. Optimal conditions were Blaine no. = 1668 cm2/g, 1250 °C firing temperature, PPGD value 90 no/mm2, SPGD value 250 no/mm2, and HPGD value 490 no/mm2, with 4.5 KN CCS 27%.
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(PDF) Improving reducibility of iron ore pellets by optimization of
The result shown that cold compression strength of the pellets containing from 1.06 to 18.45 mass% slag was higher values than 200 kg/p, hence, the pellet was able to charge the pellets into the ...
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Pelletization of synthesized magnetite concentrate obtained by
Improved physical strength & metallurgical properties make iron ore pellets an alternative feed material for blast furnace in comparison to calibrated lump ore (CLO), considering a sustainable utilization of high-grade iron ore resources. ... (LOI) and Blaine number of the pellet feed concentrate above the acceptable limit [20]. Because of this ...
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Modelling and estimating the Blaine number of iron ore …
The iron ore concentrate with the higher Blaine number causes problem in pellets making [1], [2]. Moreover, it requires the higher grinding energy during preparation to achieve the required Blaine fineness [7]. The iron ore concentrate with the lower Blaine number doesn't provide the sufficient strength both to the green and indurated pellets ...
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Experimental Investigation of Different Fineness and Firing
The total number of scans was eight, at a pressure 3 to 4 tons, with a KBr binder on the pellet die that is 12 mm in size. ... Iron Ore pellets were fired at 1250 °C/1300 °C, showing higher C.C.S. than the Iron Ore No.2 pellets (Blaine 1989/2311 cm 2 /g) due to the Ostwald ripening effect. In which finer particles, present in sufficient ...
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A Study on Removal of Clay Minerals from Barbil Region Iron
It is considered as a challenging task for beneficiation industries to handle iron ore concentrate having high LOI and a high Blaine number for pelletization. High LOI hampers the pelletization in the induration stage due to the formation of cracks in the pellet by forming high-pressure steam.
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Effect of Blaine Number on the Physical and Mechanical
The compressive strength (C.S.) value of pellets made with the BLS binder increases first with an increase in Blaine number from 900 to 1470 cm2/g, and then …
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Preparation of Iron Ore Micro-pellets and Their Effect on
2.1 Materials and Methods. Iron ore slimes from Bailadila-5 (India) mines were used for the present study. The specific surface area (also known as Blain number) of as received slime was 821 cm 2 /g. Initially, the slimes were subjected to beneficiation by gravity separation and magnetic separation, followed by wet grinding and filtration to …
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Utilization of Kimberlite as Binder for Iron Ore Pellet Making
All the raw materials including iron ore, Kimberlite, bin-der, etc. were kept in the air oven at 105 C for minimum 12 h before carrying out pelletization studies. To under-stand relation with newly developed binder with specific surface area (Blaine number) for preparation of green pellets, iron ore concentrate with different surface area
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Assessment of the effect of iron magnetic concentrate …
The overall pellet making and sintering conditions are listed in Table 2. Fig. 5 shows the illustration and schematic diagram of the pilot pellet-cooking pot. A layer of cooked pellets (hearth layer) used at the bottom of the pot to restrict sticking of hot sintering green pellets to the pot. ... The iron concentrate Blaine number was reduced ...
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Effect of Blaine Fineness on the Quality of Hematite Iron Ore …
The results showed improved properties of iron ore pellets at an optimum Blaine number (2150 cm 2 /g) but, reduction degradation index was found to be very …
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Pelletization of hematite and synthesized magnetite
The high-grade iron ore fines contain 64% Fe, 2.25% LOI, and Blaine number 2975 cm 2 /g, whereas iron ore slimes contain 52.45% Fe, 5.60% LOI, and Blaine number 7046 cm 2 /g. Pellets were produced without using bentonite as the binder. The pellet properties, such as drop number, green and dry compressive strength and moisture …
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Pellet testing methods and acceptable values. | Download Table
The high-grade iron ore fines contain 64% Fe, 2.25% LOI, and Blaine number 2975 cm²/g, whereas iron ore slimes contain 52.45% Fe, 5.60% LOI, and Blaine number 7046 cm²/g. Pellets were produced ...
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Effect of limestone and dolomite flux on the quality of pellets using
Fluxing agents as additives are the source of basic oxides (CaO, MgO) for making of iron ore fluxed pellets. CaO and MgO neutralize the acidic oxides (SiO 2, Al 2 O 3) present in iron ore thereby maintaining a suitable slag basicity ... Blaine number of iron ore fines was measured as 2920/cm 2.g −1. It illustrates that the particle size ...
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Experimental Investigation of Different Fineness and …
The firing of pellets at 1350 °C provides enough strength (C.C.S.), as shown in Figure 3 C.C.S. of these pellets is a little lower, in value, than the pellets fired at 1250 °C, of both Iron Ore and 2 …
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Effect of Bentonite on the Pelleting Properties of Iron Concentrate
The same process was repeated thrice. The moisture content value was averaged over the three attempts. (3) To test falling strength, the green pellet was dropped from a height of 0.5 m until the ball broke for certain number of times. The test was repeated 10 times. Falling strength values were averaged over the 10 attempts.
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Statistical analysis of fracture characteristics of industrial iron ore
DOI: 10.1016/J.POWTEC.2017.11.062 Corpus ID: 103137804; Statistical analysis of fracture characteristics of industrial iron ore pellets @article{Cavalcanti2018StatisticalAO, title={Statistical analysis of fracture characteristics of industrial iron ore pellets}, author={Pedro P. Cavalcanti and Lu{'i}s Marcelo Tavares}, …
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Study of Temperature Profile in the Induration of Magnetite Iron …
Earlier studies on oxidation of magnetite iron ore pellets have described about the influence of various parameters like partial pressure of oxygen, pellet porosity, pellet size, Blaine number and additives, i.e., bentonite, limestone and low volatile anthracite coal/coke [9,10,11,12,13]. In the present study, the change of mineral phases …
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Effect of high Blaine iron ore fines in hematite ore pelletization for
In this work, the effect of high Blaine fineness (2700–3250 cm²/g) on the pellets properties has been studied and the optimum parameters to make it usable for blast furnace have been examined ...
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(PDF) Mill scale as a potential additive to improve the quality of
The Iron Ore and 2 fine pellets survey showed good, desirable properties, at the Blaine no., of 1678 cm2/g and 2311 cm2/g (corresponding to 200 mesh size), and the best results are attained ...
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Effect of Blaine Number on the Physical and Mechanical
The optimum green pellet properties are obtained with iron ore fines with a Blaine number 1800 cm 2 /g using Cement as binder material. They show a high C.S. …
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Pelletization of synthesized magnetite concentrate obtained by
The Blaine number of iron ore concentrate is a key parameter in the iron and steel chain, especially pelletizing. In this study, a novel and comprehensive strategy was introduced for modelling and estimating the Blaine number of iron ore concentrate by using the particles physical properties (particles size distribution and shape)-based Response …
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Modelling and estimating the Blaine number of iron ore …
In this study, a novel and comprehensive strategy was introduced for modelling and estimating the Blaine number of iron ore concentrate by using the particles physical properties (particles size distribution and shape)-based Response Surface …
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Effect of Blaine Number on the Physical and Mechanical
lime (LSL), and cement) and Blaine number on the prop-erties of pellets prepared using the slime generated from the washing of Indian-origin iron ore. The compressive …
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Analysis of the Influence of Blaine Numbers and Firing
The RSM-I-optimal predicted responses with a coefficient of determination (R2) of 0.89 for CCS and 0.91 for AP of iron ore pellets. Optimal conditions were Blaine …
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What is the relation between blaine number and specific surface
The blaine number of iron ore concentrate is important for pellet feed specification which is measured by air permeability apparatus and its unit is cm2/gr, while specific surface is measured by ...
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Analysis of iron ore pellets properties concerning raw material
The pellets were prepared by blending iron ore fines (64% Fe, 2.25% LOI, and Blaine number = 2975 cm 2 /g) and slimes (52.45% Fe, 5.60% LOI, and Blaine number = 7064 cm 2 /g) generated from the beneficiation plant. The utilization of slimes replaces the external binder addition during pellet making.
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ISO 21283:2018(en), Iron ores ? Determination of specific surface …
This document specifies a method to determine the fineness of iron ores in terms of specific surface area, using the manual Blaine air-permeability apparatus. This document is applicable to pellet feeds in the range of 400 cm 2 /g …
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X-MOL
Modelling and estimating the Blaine number of iron ore concentrate by response surface methodology and Monte Carlo simulation. Advanced Powder Technology (IF 5.2) Pub Date: , ... Method of Making Iron Ore Pellets with a Carbon Core by Disc Pelletizer. ISIJ International (IF 1.8) Pub Date: , DOI: ...
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