Water retention characteristics of iron ore fines

Wang, Hailong; Koseki, Junichi; Nishimura, T.

doi:10.1139/cgj-2018-0840

Cited by 4 publications

(2 citation statements)

References 30 publications

(34 reference statements)

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“…The hardness, true density, and void ratio of the ore influence the water retention characteristics. [21,22] 1.1. Opportunities for Optimizing the Granulation As the iron ore crisis that set in 2011 in the region, the microfines in the iron ore increased.…”

Section: Introductionmentioning

confidence: 99%

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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%

“…The hardness, true density, and void ratio of the ore influence the water retention characteristics. [ 21,22 ]…”

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

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Development of a Multifunctional Triaxial System for Unsaturated Soils: Addition of Permeameter Function

et al. 2020

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On swelling behaviours of a bentonite under different water contents

et al. 2024

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This study starts from a question: how would initial water content (wi) affect equilibrium swelling pressure (peq) of compacted bentonites in swelling pressure tests (ps tests)? However, discussions, based on experiments of a bentonite, Kunigel V1 (K_V1), are extended to issues: 1) wi effect on peq, 2) pore water density (ρpw), 3) co-existence of crystalline and osmotic swelling, and 4) relation between peq and compaction tests (pc tests). It is revealed that wi has insignificant effect on peq in general, though significant effect may appear for relatively high wi and dry density (ρd) conditions. Two swelling types, crystalline swelling with basal spacing of montmorillonite (d001= 1.0 nm - 1.9 nm) and osmotic swelling (d001 ≥ ∼4.0 nm), co-exist in a w range from 36 to 65%. With the fact that ρpw of K_V1 may range from 1.1 to 1.2 Mg/m3, it is expected that crystalline swelling may mainly govern peq in ps tests if the final dry density of a specimen (ρdf) is larger than 1.46 Mg/m3, while osmotic swelling may mainly govern if ρdf <1.05 Mg/m3. Together with results of pc tests, the effect of wi on peq are explained by the proposed conceptual model.

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Water retention characteristics of iron ore fines

Cited by 4 publications

References 30 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

Development of a Multifunctional Triaxial System for Unsaturated Soils: Addition of Permeameter Function

On swelling behaviours of a bentonite under different water contents

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