Optimum Water Content Estimation for Wet Granulation of Iron Ore Powders with Quicklime Binder

Yokokawa, Shota; Nakamura, Hideya; Otsu, Tomotaka; Ohsaki, Shuji; Watano, Satoru; Fujiwara, Shohei; Higuchi, Takahide

doi:10.2355/isijinternational.isijint-2022-498

Cited by 3 publications

(1 citation statement)

References 31 publications

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“…A partition coefficient of iron ore, coke, limestone, and sinter fines was introduced by Litster et al [ 16 ] to arrive at optimum moisture content through a mathematical model. Yokokawa et al [ 17 ] demonstrated agitation torque as an influencing factor in estimating the optimum moisture, with the help of a torque rheometer. Their experimental setup comprised an agitator with a main and an auxiliary blade that is rotated in the green mix being granulated.…”

Section: Introductionmentioning

confidence: 99%

Rheological Studies on Optimizing the Sinter Mix Granulation Mechanism to Sustain Productivity

Angalakuditi,

Sah,

Yadav

et al. 2024

steel research int.

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Granulation of the sinter mix is an important step in the iron ore sintering process. This article presents the results of various studies conducted to understand the rheological aspects and methods implemented in industrial‐scale sinter plants to sustain productivity over the last decade. The intergranular bonding material in the mixing and nodulizing drum is characterized to understand its influence on the granulation. Calcined lime, when increased from 20 to 40 kg t−1 of sinter, increases the granulation index and helps in achieving higher productivity. Up to 20 kg t−1, calcined dolo increases productivity, beyond which a decline is noticed. Lignosulfonate and polymer binders in the range of 0.2%–0.7% in the sinter mix, respectively, increase the granulation of the microfines (0.25 and 0.5 mm size). When a magnetic field is applied to water, the granulation improves. Higher electrical conductivity and lower contact angle of the recycled water are found to improve the bonding of the particles. Zeta potentials of fly ash and bentonite solution in water are positive and negative in the cases of calcined lime and calcined dolo. It is suggested to use fly ash as a binder of microfines.

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Section: Introductionmentioning

confidence: 99%

Rheological Studies on Optimizing the Sinter Mix Granulation Mechanism to Sustain Productivity

Angalakuditi,

Sah,

Yadav

et al. 2024

steel research int.

View full text Add to dashboard Cite

show abstract

Investigating the fundamental properties of iron ore granules when combined with varying amounts of liquid and different powder binders

Dahri,

Zhou,

Zhou

2023

Particulate Science and Technology

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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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Optimum Water Content Estimation for Wet Granulation of Iron Ore Powders with Quicklime Binder

Cited by 3 publications

References 31 publications

Rheological Studies on Optimizing the Sinter Mix Granulation Mechanism to Sustain Productivity

Rheological Studies on Optimizing the Sinter Mix Granulation Mechanism to Sustain Productivity

Investigating the fundamental properties of iron ore granules when combined with varying amounts of liquid and different powder binders

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

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