Optimisation of FeO in iron ore sinter at JSW Steel Limited

Umadevi, T.; Karthik, P. Sai; Mahapatra, P. C.; Prabhu, M.; Ranjan, Madhu

doi:10.1179/1743281211y.0000000080

Cited by 36 publications

(29 citation statements)

References 7 publications

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“…From abovementioned follows, that most of FeO in examined sinters is fixed in magnetite. If, based on the given facts, we shall consider that the FeO content in the sinter is directly linked to the content of magnetite [27], we can assign the Fe 3 O 4 analysis the same significance as FeO.…”

Section: The Development Of Phase Composition At Fuel Substitutionmentioning

confidence: 99%

Mineral phases in iron ore sinters produced with oak sawdust substitute fuel

Mežibrický

Fröhlichová

2018

J min metall B Metall

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In this paper, the effect of oak sawdust-a cheap substitute fuel on the quality of sinter in terms of its phase composition is evaluated. The samples of sinters prepared with 5, 9, and 13% equivalent fixed carbon substitution of coke breeze by oak sawdust were analyzed by light microscopy, SEM-EDS and powder XRD analysis. The microstructure of sinters in places with fuel residues consisted of well-integrated secondary mineral phases, confirming good conditions for sintering. The phase analysis has shown a predominance of low-Fe SFCA modification over the high-Fe SFCA-I and the increasing trend in the ratio of magnetite with an increasing degree of fuel substitution up to 8%. As a conclusion, the sinters made with a partial replacement of fuel are in terms of the total phase composition comparable to sinter fueled with coke only and therefore qualitatively satisfactory for blast furnace process.

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Section: The Development Of Phase Composition At Fuel Substitutionmentioning

confidence: 99%

Mineral phases in iron ore sinters produced with oak sawdust substitute fuel

Mežibrický

Fröhlichová

2018

J min metall B Metall

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“…The reducibility of sinter was degraded and the coke ratio of blast furnace in late smelting was increased. 16,17) Under the condition of flue gas circulating sintering, the higher the flue gas temperature was, the higher the FeO content in sinter was. Above all, on the basis of 0.85% CO in the flue gas, the higher flue gas temperature was, the more beneficial to improve the yield and strength of sinter, but it would reduce the vertical sintering rate and affect the sintering production efficiency.…”

Section: Effect Of Flue Gas Temperature On Sinter Proper-mentioning

confidence: 99%

Flue Gas Circulating Sintering Based on Biomass Fuel on Reduction of NO<sub>x</sub> and SO<sub>2</sub> Emission

et al. 2020

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In order to reduce the emission concentration of sintered flue gas pollutants, the source control technology and process control technology of iron ore sintering were adopted to reduce the emission concentration of flue gas pollutants. In this paper, the experiments of flue gas circulating sintering pot with charcoal instead of partial coke was carried out. The effects of O 2 content, temperature, SO 2 content and NO x content in circulating flue gas on sinter properties and emission concentration of flue gas pollutants were studied. The experimental results show that the suitable oxygen content in flue gas was 14.9%, and the maximum suitable concentration of SO 2 was 500 ppm based on charcoal instead of 40% coke circulating flue gas sintering. The NO x had little effect on the sintering performance index. Under the conditions of flue gas temperature of 200°C and CO content of 0.85%, the content of charcoal instead of coke was increased from 40% to 50%. The emission reduction of sintering flue gas pollutants SO 2 and NO x was more than 42.6% and 65.8%, respectively. The comprehensive utilization of sintering flue gas waste heat and the cooperative control of sintering flue gas pollutants were realized.

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“…RDI is reduced when FeO content is increased [20,34]. The problem is that increasing FeO content affects coke rate, deteriorates the sinter reducibility [35,36], and can also affect blast furnace productivity [35]. [37].…”

Section: Iron Ores and Iron Oxide Materialsmentioning

confidence: 99%

Iron Ore Agglomeration Technologies

González¹,

Piñuela-Noval²,

González³

2018

Iron Ores and Iron Oxide Materials

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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 highgrade iron ore sources has made necessary the utilization of concentration processes with the purpose of enriching the iron ore. Because of these processes, a fine granulometry is produced, and thus iron agglomeration process is necessary. There are several agglomeration processes including: briquetting, extrusion, nodulization, pelletizing and sintering, although pelletizing and sintering are the most widely used, and especially sintering process (70% blast furnace load). Apart from obtaining an agglomerated product, the objective is reaching the suitable characteristics (thermal, mechanical, physical, and chemical) in a product that is then fed into the blast furnace, achieving a homogenous and stable operation in this furnace with economical profitability.

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Optimisation of FeO in iron ore sinter at JSW Steel Limited

Cited by 36 publications

References 7 publications

Mineral phases in iron ore sinters produced with oak sawdust substitute fuel

Mineral phases in iron ore sinters produced with oak sawdust substitute fuel

Flue Gas Circulating Sintering Based on Biomass Fuel on Reduction of NO<sub>x</sub> and SO<sub>2</sub> Emission

Iron Ore Agglomeration Technologies

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