Influence of Sodium Hydroxide (NaOH) on Green and Fired Pellet …
Worldwide iron ore pellets production increased from 388 million tonnes in 2010 to 550 million tonnes in 2022. ... Blaine number (specific surface area, cm 2 /g) of PRM was measured using Toni prem blaine apparatus and was found to be 3040 cm 2 /g. Zeta potential test of PRM along with the fixed proposition of bentonite (0.5 pct), and …
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Effect of Blaine Fineness on the Quality of Hematite Iron Ore Pellets …
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 poor for the given ore. Further investigation showed that when MgO containing flux viz. pyroxenite was added, the reduction degradation index and swelling index of the pellets …
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Effect of Blaine Number on the Physicalhanical …
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 declines with an …
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Effect of high Blaine iron ore fines in hematite ore …
Blaine fineness is one of the most important parameters in pelletising. While the lower Blaine fineness does not provide sufficient strength to the both green pellet and indurated pellet, excessively high Blaine fineness causes problem in pellet making. Optimum Blaine fineness of iron ore in the range of 1700–2250 cm2/g is usually used for good quality …
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Analysis of the Influence of Blaine Numbers and Firing
The results showed improved properties of iron ore pellets at an optimum Blaine number (2150 cm2/g) but, reduction degradation index was found to be very poor for the given ore.
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(PDF) Optimization of Particle Size and Specific Surface Area of Pellet
A relatively large number of units have been or are being installed in iron ore pellet feed over the last few years throughout the world, in various circuits of single pass or closed circuit in ...
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Effect of Blaine Number on the Physical and Mechanical
In this study, the influence of three different binder compositions (bentonite and limestone (BLS), limestone and lime (LSL), and cement) and Blaine number on the characteristics …
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Experimental Investigation of Different Fineness and Firing
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 pellets of respective Blaine fineness (1312–1678–2425–3218 cm 2 /g of Iron Ore and 1989–2311–2879–3461 cm 2 /g …
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IMPROVING REDUCIBILITY OF IRON ORE PELLETS BY
The pellet chemistry of a steel plant, M/s Tata Steel Ltd (TSL) was chosen as typical composition (CaO: 1.0 %, MgO: 1.4 % and C: 1.2 %) to make the reference pellet. First, the reference pellets were made taking iron ore fines of Blaine fineness 2855 cm2/g as used in TSL, whose size fractions are given in Table 1.
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What's a Blaine number?
A Blaine number is the surface area-based parameter that is quantified with the use of the air permeability method. The technique is well-established in the cement industry. However, it has several widely recognized and important limitations. These include 2 types of cement of the same Blaine number exhibiting different characteristics in …
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Effect of Blaine Fineness on the Quality of Hematite Iron Ore …
The paper presents the effect of Blaine number on green and dry strength, cold crushing strength, reducibility index, reduction degradation index, swelling index, apparent …
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Modelling and estimating the Blaine number of iron ore
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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Usage of High-LOI Iron Ore Fines in Pellet Making
High-LOI iron ore fines are required for detailed laboratory pelleti- zation studies and are used in pellet making. The received iron ore is martite–goethitic and hematite–goethitic form of ore with high LOI content. The iron ore consists of 57.7% Fe, 6.19% SiO2, 2.69% Al2O3, 8.80% moisture and 8.85% LOI.
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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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Influence of Specific Surface Area on the Strength of …
temperatures at different times for producing oxidized pellets with high strength. The Blaine SSA of the tested iron concentrates that were treated with HPGR ranged from 849 cm2/g to 1601 cm2/g. The fineness of the concentrates was evaluated by particle size distribution, BET SSA, and lattice deformation. With the strength of pellets …
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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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Iron ore pellets and fines
Our iron ore pellets and fines are made from magnetite and have high iron ore content – pellets at around 67 percent concentration and fines over 70 percent. This means they have lower impact on the environment than competing pellets and products such as sintered hematite fines. ... Number of quality parameters continuously measured in our ...
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Analysis of the Influence of Blaine Numbers and Firing
Cold compressive strength (CCS) and apparent porosity (AP) of pellets are essential properties regarding the burden of blast furnaces. The optimal required values for …
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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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Effect of Blaine Number on the Physical and Mechanical …
In this work, a comparative study has been done to determine the effect of three different compositions of binders (bentonite and limestone (BLS), limestone and lime (LSL), and cement) and Blaine number on the properties of pellets prepared using the slime generated from the washing of Indian-origin iron ore. The compressive strength (C.S.) …
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Blaine Number in Pellet Making | bulk-online
Silo for Red Iron Oxide Storage. Free Bulk Conveyor Calculation Program. Formula for rate of travel of material over vibrating feeder. ... Blaine Number in Pellet Making. Atanu Banerjee MMH Department M.N.Dastur & Co. P. Ltd. Posted in: Forums » General » General Aspects, on 18. Feb. 2009 - 05:21
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Modeling of degradation by impact of individual iron ore pellets
DOI: 10.1016/j.powtec.2020.10.037 Corpus ID: 225115872; Modeling of degradation by impact of individual iron ore pellets @article{Cavalcanti2021ModelingOD, title={Modeling of degradation by impact of individual iron ore pellets}, author={Pedro P. Cavalcanti and Hor{'a}cio A. Petit and Andr{'e} Thomazini and Rodrigo M de Carvalho and Lu{'i}s …
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Utilization of Kimberlite as Binder for Iron Ore Pellet …
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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Effect of high Blaine iron ore fines in hematite ore pelletization …
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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Effect of Blaine Fineness on the Quality of Hematite Iron Ore Pellets …
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 poor for the given ore. Further investigation showed that when MgO containing flux viz. pyroxenite was added, the reduction degradation index and swelling index of the pellets were improved ...
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Effect of limestone and dolomite flux on the quality of pellets …
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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Reducing bentonite usage in iron ore pelletization through a …
Based on the raw material ratios and Blaine numbers used in feed pellet production, a mixture comprising 65 wt% concentrate A and 35 wt% concentrate B underwent pretreatment using a high-pressure grinding roller (HPGR) to attain a Blaine number of 1973.09 cm 2 /g. The detailed HPGR process is elaborated in the …
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Modelling and estimating the Blaine number of iron ore …
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 …
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blaine number for iron pellet making
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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Analysis of iron ore pellets properties concerning raw …
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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