Influencing Factors and Effects of Assimilation Characteristic of Iron
As is well known, high-temperature characteristics of iron ores are identified as the basic indexes to evaluate the impact of iron ore properties on the sintering process as well as the output and ...
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Iron ore sintering
Sintering is the most economic and widely used agglomeration process to prepare iron ore fines for blast furnace use. In this chapter, the sintering process is first described to identify the key steps of the process, that is, granulation and thermal densification. Discussion is then focused on the effect of the chemical, physical, and ...
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Characteristics and Sintering Mechanisms of Iron Ores with …
Characteristics and Sintering Mechanisms of Iron Ores with a High. Proportion of High-Al 2 O 3 Limonite. Zhikai Liang, Jun Chen, * Zhucheng Huang, * and Boyang Huang. Cite This: ACS Omega 2023, 8 ...
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Types of goethite from Quadrilátero Ferrífero's iron ores …
Quadrilátero Ferrífero's iron ores used in the sintering process correspond to mixes of hematitic and goethitic ore typologies. The ores have particle size mainly distributed in the range from 6·35 to 0·105 mm. The goethitic typology comprises a low amount in these ore blends; however, it can be relevant in the reactivity during sintering.
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Partial substitution of anthracite for coke breeze in iron ore sintering
In the sintering of iron ores, the partial substitution of anthracite for coke breeze has been considered to be an effective way of reducing pollutant emissions and production cost. In this study ...
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Comprehensive evaluation of sintering basic characteristics of iron …
The iron ores with high SiO 2 content or high crystal water content should be reasonably used with other iron ores due to their bad sintering properties. 2.2 Experimental methods. Pure CaO and iron ores were dried at 105 °C for 3 h and ground to a size of less than 147 μm.
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An efficient method for iron ore sintering with high-bed
It can be seen from Tables 1 and 2 that the blend with high iron grade has a high content of FeO (14.51 wt.%) because it consisted of 70 wt.% magnetite concentrate and 30 wt.% fine ore. The coke breeze has high fixed carbon content (83.37 wt.%) and low volatile matter content (1.57 wt.%). 2.2 Methods. The double-layer sintering process is …
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Sintering of Iron Ores in a Millipot in Comparison with
To explore the feasibility of small-scale sintering pot testing, a 'millipot' facility (diameter of 53 mm and height of 400 mm) was established and used to examine the sintering performance of iron ores and other non-traditional ferrous materials. The sintering performance of a millipot was examined across a range of different operational …
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Iron Ore Sintering: Process
Oxidized iron ores with a granulometry within 10 and 120 mm were loaded into the blast furnace until the fifties of the last century (Peacey and Davenport 1986). ... Sintering is a thermal agglomeration process that is applied to a mixture of iron ore fines, recycled ironmaking products, fluxes, slag-forming agents, and solid fuel (coke). ...
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Iron Ore Sinter
Iron ore sintering. L. Lu, O. Ishiyama, in Iron Ore, 2015. 14.5 Conclusions. Sintering is the most economic and widely used agglomeration process to prepare iron ore fines for blast furnace use. Compared with pellets, production of sinter is cheaper, and compared with lump ore, fluxed sinter is often more reducible with better softening ...
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(PDF) Biochars in Iron Ores Sintering Process: Effect on
residual biomass as a substitutional fuel in the iron ore sintering process. Such an approach allows to. implement circular economy and industrial symbiosis to the iron and steel branches. The ...
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Iron Ore 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 …
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Recent advances in iron ore sintering
Sintering is the most economic and widely used agglomeration process to prepare iron ore fines for blast furnace use. Owing to the depleting reserves of traditional high grade iron ore, there …
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Determination method of high-temperature characteristics of iron …
The high-temperature characteristics of iron ores play important roles in optimizing ore proportion of sintering, which are tested by using iron-ore fines and analytical reagent CaO as raw materials. Two calculation methods of CaO addition amount based on binary basicity (basicity method) and n(Fe2O3)/n(CaO) (mole ratio method), …
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Bench-scale calcination and sintering of a goethite iron ore …
Abstract. This work presents the results of bench calcination and sintering studies conducted on an iron ore sample from Iron Quadrangle, Brazil with high goethite content. The natural samples and the products of calcination and sintering were characterised by inductively coupled plasma optical emission spectroscopy (OES/ICP), X …
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Basics of Iron Ore Sintering | SpringerLink
In iron making process, sintering of iron ore fines is an integral step to utilize not only the ore fines but also to introduce a part of flux (limestone and dolomite) …
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Effect of Addition of Mill Scale on Sintering of Iron Ores
Iron-rich (65 to 70 pct total Fe) mill scale generated during processing by steel mills can be recycled by using it as a ferrous raw material in the sintering process. The effect of mill scale addition on the phase formation of sintered specimens from an industrial sinter blend containing 0 to 15 wt pct mill scale was examined, and the mineral …
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Reducing Dust Emission During the Sintering of Iron Ores …
One of the main sources of dust-bearing emissions in the metallurgical industry is the sintering machine. An acoustic field was formed during the initial stage of heat treatment of a sintering-machine charge by using an acoustic radiator in the form of a Hartmann whistle installed in the vacuum chambers of the machine. The acoustic field …
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Super-high bed sintering for iron ores: inhomogeneous
The emissions of greenhouse gas was studied in sintering of iron ores by KM9106 flue gas analyzer. It indicates that the emission of COx reveals the coke combustion state during sintering, where ...
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Iron Ore Agglomeration Technologies | IntechOpen
Until the 1950s of the last century, the oxidized iron ores that were loaded into the blast furnace had granulometries within 10 and 120 mm. However, the depletion of high-grade iron ore sources has …
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Iron ore sintering
Sintering is the most economic and widely used agglomeration process to prepare iron ore fines for blast furnace use. Compared with pellets, production of …
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Synergistic conversion of iron ore sintering dust and waste …
Natural iron-based ores (e.g. olivine, magnetite, ilmenite, etc.) have been extensively investigated for their low cost but sufficient stability and reactivity. ... However, the reduction indexes of iron in sintering dust increased negligibly with the temperature rising from 1000 °C to 1100 °C, as shown in Fig. 6 of Section 3.3.1. Therefore ...
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Super-high bed sintering for iron ores: problems …
Super-high bed sintering process is an important development direction of iron ore sintering for its lower emission and higher yield. However, there is a lack of deep understanding of the uneven quality of super-high bed sintering products, and the deterioration of reduction disintegration performance, the thickening of hearth layer and …
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A Novel Sintering Process for Porous Iron Ore Sintering …
3.2 Sintering Behavior of both Type of Iron Ores (either Porous or Dense Type) The sintering process parameters and sinter qualities obtained through conventional and pre-processed iron ore with calcined lime routes are presented in graphical form in Fig. 6. The pot sinter results exhibit clear and distinct differences in the results of dense ...
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Influence of iron ore properties on dioxin emissions during iron …
The moisture of iron ores means the water content held in the iron ores of unit mass, which is a critical parameter for granule formation in a sintering process.
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(PDF) Mineralogy of Iron Ores of Different Alumina Levels …
To summarise Iron ores with fine crystal size coupled with low degree of hydration favours high productivity and low coke rate in sintering. Iron ores with medium crystal size and very low degree of hydration favours sinter tumbling strength and RDI.In another study carried out by Okazaki et al. [8] it was observed that in Indian ore there were ...
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(PDF) Lower SO2 Emissions in the Sintering Process Utilizing …
Iron ore sintering accounts for approximately 60% of total SO 2 emissions from the iron and steel industry (Qie et al., 2017; Zhao et al., 2014), which contributes to about 7.5% of SO 2 emissions ...
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Super-high bed sintering for iron ores
DOI: 10.1007/s42243-023-01117-x Corpus ID: 264796371; Super-high bed sintering for iron ores: inhomogeneous phenomena and its mechanism during mineralizing @article{Liu2023SuperhighBS, title={Super-high bed sintering for iron ores: inhomogeneous phenomena and its mechanism during mineralizing}, author={Hui-bo Liu …
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Ore-blending optimization model for sintering process …
However, for a practical sintering process, enterprises commonly need to use a variety of iron ores to maintain the SiO2 content of the mixed ore in a certain range (approximately 4.5~5.5 wt%) in ...
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Characteristics and Sintering Mechanisms of Iron …
Abstract. In this study, a sintering test of high-alumina limonite from Indonesia, matched with an appropriate magnetite concentration, is performed. The sintering yield and quality index are …
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