Iron Ore Pelletization: Part I. Fundamentals

Kawatra, S. Komar; Claremboux, V.

doi:10.1080/08827508.2021.1897586

Cited by 26 publications

(5 citation statements)

References 34 publications

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“…The green pellet technique used in all experimental laboratory studies is included in detail in [28] and is methodologically consistent with the method proposed by Eisel and Kawatra [29] and is still used at Michigan Technological University [30].…”

Section: Research Methods and Objectsmentioning

confidence: 99%

Research for Industrial Application of Bentonite-Polymer Material in Ferrous Metallurgy

Vetyugov,

Matveeva

2024

Recent Advances in Montmorillonite

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Ferrous metallurgy, in particular the process of pelletizing iron ore concentrates, is one of the main consumers of bentonite clays. The problem with the bentonite binder is well known, and is the increase in silica content (the main harmful impurity) in the roasted pellets as a result of its use. This predetermines long-term interest in the development of new binders that have lower consumption, or do not contain silicon dioxide at all. Increasing the quality characteristics of the binder makes it possible to reduce its consumption, thereby optimizing the chemical composition of the roasted pellets. The results of experimental studies on the palletization of magnetite concentrate from several iron ore plants, different enrichment depths (Fe content = 65–71%), and basicity (CaO)/(SiO2) = 0.3–1.0 are presented. It has been shown that using the effect of mixing bentonite and a polymer additive on the binding properties of their compound makes it possible to increase the strength characteristics of pellets relative to those in current production (without polymer) and more significantly than when excluding bentonite in the case of its complete replacement with an organic binder. Much attention is paid to studying the influence of the use BPC (Bentonite Polymer Composition) on the metallurgical properties of finished pellets.

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Section: Research Methods and Objectsmentioning

confidence: 99%

Research for Industrial Application of Bentonite-Polymer Material in Ferrous Metallurgy

Vetyugov,

Matveeva

2024

Recent Advances in Montmorillonite

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“…Particle orientation leads to a variety of crystalline phase formations. Blaine fineness of ores was prepared, and their particle size analysis is done [11].…”

Section: Fines Sample Preparationmentioning

confidence: 99%

Experimental Investigation of Different Fineness and Firing Temperatures on Pellets Properties of Different Iron Ore fines from Indian Mines

et al. 2022

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In India, during mining and ore processing, ore fine generation is a common phenomenon, in which more than 60% of process ore becomes discarded material. To explore the alternative of high-grade ores, mutual replacement with the utility of dump ore fines is the best way. With this perspective, Kiruburu iron ore mine (Iron Ore No.1) and Meghataburu iron ore mine (Iron Ore No.2) dumped fines were chosen for a Blaine no. investigation, in the connection of firing temperatures, to get optimum desirable physical properties, Cold Compression Strength (C.C.S.),and Apparent Porosity (A.P.), with physico-chemical properties, Reducibility Degradation Index (R.D.I.), and Reducibility Index (R.I.). To characterize pellet properties with input variables, a microstructure phase study has been conducted using a scanning electron microscope (S.E.M.), energy dispersive spectroscopy (EDS), and X-ray diffraction analysis (XRD). The Iron Ore No.1 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 at a firing temperature of 1300 °C. Thermal kinetic analysis of the heating of pellets has been done to knowthe activation energy of different ore characteristics. The results showed that Iron Ore No.2 pellets have high activation energy.

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“…Iron ore pellets are an essential part of the blast furnace charge, with high grade, good strength, uniform particle size, good metallurgical properties, and so forth. , Especially, fluxed iron ore pellets have better high-temperature soft fusion performance and reduction performance. − However, the burden of the blast furnace is still dominated by a high proportion of high basicity sinter and some acidic iron ore pellets . The pelletizing process’s energy consumption, CO 2 emission, and environmental pollution are much lower than the sintering process.…”

Section: Introductionmentioning

confidence: 99%

Effects of Pellet Basicity on the Simulated Deposit Formation in Coal-Fired Rotary Kilns for Iron Ore Pellet Production

et al. 2022

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Deposit formation in the coal-fired rotary kiln is frequently found in the production of fluxed iron ore pellets by the grate-kiln process and affects normal production. In this paper, the effects of pellet basicity (CaO/SiO2 mass ratio) on the simulated deposit formation were investigated. The results show that the porosity of deposits samples increases from 30.8 to 41.5% as the pellet basicity increases from 0.6 to 1.2, and most of the holes are irregular in shape. The contents of CaO and Fe2O3 in the silicates of the deposit samples increased with increasing basicity. The primary phase of the deposit samples changed from the M2O3 phase region to the clinopyroxene phase region with a lower melting point. As the basicity increased, the calculated proportions of the liquid phases in the deposit samples had an increasing trend. Moreover, the deposit sample adhesion to the refractory brick increases with the increase in pellet basicity.

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Iron Ore Pelletization: Part I. Fundamentals

Cited by 26 publications

References 34 publications

Research for Industrial Application of Bentonite-Polymer Material in Ferrous Metallurgy

Research for Industrial Application of Bentonite-Polymer Material in Ferrous Metallurgy

Experimental Investigation of Different Fineness and Firing Temperatures on Pellets Properties of Different Iron Ore fines from Indian Mines

Effects of Pellet Basicity on the Simulated Deposit Formation in Coal-Fired Rotary Kilns for Iron Ore Pellet Production

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