Application of the Hybrid Pelletized Sinter (HPS) process at Monlevade Works

Borges, William Da Silva; Melo, Cássio Alves; Braga, Roberto Ruggiero; Santos, Eliete Correia dos; Maria, Charles L. Santa; Kojima, O.; Satō, Hiroyuki

doi:10.1051/metal:2004133

Cited by 8 publications

(5 citation statements)

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“…A number of studies have explored the possibility of replacing fine iron ore by ultrafine materials (concentrates, dust, iron ore wastes) in sinter making (Rankin, Roller and Batterham 1983; Borges et al 2004; Bartlett, Gerlach and Koepf 2009; Socalici, Heput, Ardelean and Ardelean 2011; Pal et al 2013). Unfortunately a large amount of ultrafine materials in the feedstock has an adverse influence on the sintering process.…”

Section: Introductionmentioning

confidence: 99%

“…It is evident that a sinter mix consisting of large amounts of concentrates will be associated with a narrower particle size distribution, resulting in a decrease in permeability of the sinter bed. To mitigate the negative effects of concentrates, very fine particles can be transformed into micropellets so that they can be used as an alternative feed material in the granulation process (Rankin et al 1983; Rankin and Roller 1985; Borges et al 2004; Bartlett et al 2009; Socalici et al 2011; Pal et al 2013).…”

Section: Introductionmentioning

confidence: 99%

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Effect of concentrate and micropellet additions on iron ore sinter bed permeability

Nyembwe

Cromarty

Garbers-Craig

2016

Mineral Processing and Extractive Metallurgy

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With the depletion of high-grade lump iron ore, concentrates have been identified as an alternative material for sinter making. In this study, the effect of concentrate and micropellet additions on the permeability of the sinter mixture was investigated. Permeability was measured on sinter mixtures containing 10–40% concentrate or micropellets at various moisture contents. The results confirmed that the addition of concentrates to the sinter mix decreases the maximum permeability of the sinter bed. Incorporation of micropellets into the sinter mix reduced the permeability less than concentrate addition. The maximum permeability of sinter mixes containing concentrate is reached at the same moisture content as the sinter mixture without concentrate addition. For sinter mixes containing micropellets, additional water must be added to obtain maximum permeability. Granule size, void fraction and angle of repose were also investigated to evaluate their effects on the permeability of the sinter bed.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of concentrate and micropellet additions on iron ore sinter bed permeability

Nyembwe

Cromarty

Garbers-Craig

2016

Mineral Processing and Extractive Metallurgy

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“…In this process, iron ores, flux and a small amount of fuel are mixed well in the granulation drum mixer, followed by pelletizing the raw materials coming out of the mixing drum with burnt lime as binder on the pelletizing disc into pellets with a particle size of 4-5 mm, and finally the fuel coating granulation is conducted in the second stage granulation drum mixer. The Monlevade plant in Belgo-Mineira, Brazil, introduced the HPS process in 2002 and achieved an increase in sinter output from 37 to 42 t/(m 2 •d) with the parameters of its HPS line shown in Table 2 122) . Fig.…”

Section: 41: Hybrid Pelletized Sintering Processmentioning

confidence: 99%

Iron Ore Granulation for Sinter Production: Developments, Progress, and Challenges

et al. 2023

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Iron ore granulation is an indispensable process in the production of sinter that can influence and regulate the yield, efficiency and quality. Although a great deal of research has been done on the granulation process over the past decades, we still need to think about the current and future development of this process, as sinter is still an essential raw material for ironmaking blast furnace today. This paper begins with a review of particle agglomeration theory development for sintering granulation, followed by a summary of existing granulation evaluation methods and indexes. The roles of iron ore, fuel, fluxes, and moisture in sintering granulation are also analyzed, and finally advanced granulation equipment and processes for industrial production, as well as their applications, are summarized. Correspondingly, the challenges in sintering granulation field are proposed to include: (1) Development of iron ore sintering industry; (2) Ore blending optimization based on synergistic coupling of granulation and sintering; (3) Optimization of granulation process and equipment; (4) Methods and tools for granulation scientific research. These issues will be tackled and overcome in the future by both steel enterprises and academic researchers, generating suggestions for future development in the field of sintering granulation.

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“…The investigations carried out on pelletized sintering indicated the decreasing of coke consumption in the blast furnace in addition to increasing the productivity rate and smoothing operation. [4][5][6] The influence of coke breeze coated pellets on the sintering process was investigated. [7] The combustion of coke breeze is promoted by arranging the coke breeze in the coating layer of pellets and resulted in higher temperature inside and around the pellets which caused a remarkable melting and large void formation.…”

Section: Introductionmentioning

confidence: 99%

“…The HPS includes the pelletization of ultra‐fines iron ore followed by charging into the conventional sintering machine. The investigations carried out on pelletized sintering indicated the decreasing of coke consumption in the blast furnace in addition to increasing the productivity rate and smoothing operation . The influence of coke breeze coated pellets on the sintering process was investigated .…”

Section: Introductionmentioning

confidence: 99%

A Novel Approach for Utilization of Ultra-Fines Iron Ore in Sintering Process

Mousa

Babich

Senk

2015

steel research int.

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The current study presents a novel approach for the utilization of ultra-fines iron ore (À0.2 mm) in sintering process through its conversion into mini-pellets (4-9 mm). The minipellets were composed of ultra-fine iron ore and calcium hydrate while coke fines were used as a coating layer. One part of mini-pellets was cured with CO 2 to improve the strength of green pellets while another part was kept uncured. The trails were carried out in sinter pot after adjusting the operating parameters. The utilization of 30% cured mini-pellets was accompanied by the constant highest temperature (%1400 8C) in combustion zone. On the contrary, the sinter prepared using 30% uncured mini-pellets showed the highest temperature (%1471 8C) at the beginning of sintering process followed by a gradual decreasing in the temperature. The permeability of sinter bed was improved by using cured mini-pellets in the sinter mixture. The sinter indices including the product yield, tumbler index and fuel consumption are measured. Reflected light microscopy, scanning electron microscopy, and X-ray diffraction analysis were used to characterize the microstructure and the developed phases.

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Application of the Hybrid Pelletized Sinter (HPS) process at Monlevade Works

Cited by 8 publications

References 0 publications

Effect of concentrate and micropellet additions on iron ore sinter bed permeability

Effect of concentrate and micropellet additions on iron ore sinter bed permeability

Iron Ore Granulation for Sinter Production: Developments, Progress, and Challenges

A Novel Approach for Utilization of Ultra-Fines Iron Ore in Sintering Process

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