Influence of Particle Size Distribution on Rheology Behavior of Slurry and Flow Characteristics of Long-Distance Transportation.
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| Title: | Influence of Particle Size Distribution on Rheology Behavior of Slurry and Flow Characteristics of Long-Distance Transportation. |
|---|---|
| Authors: | Chen, Xin1,2,3 (AUTHOR), Jiang, Zhongtao1,2 (AUTHOR), Zhang, Junhui3,4,5 (AUTHOR) zhangjunhui@xju.edu.cn, Li, Zeyu1,4 (AUTHOR) |
| Source: | Materials (1996-1944). May2026, Vol. 19 Issue 9, p1881. 22p. |
| Subjects: | Particle size distribution, Slurry, Mine waste, Computational fluid dynamics, Pipeline transportation, Fluid dynamics, Rheology |
| Abstract: | Highlights: The relationship between mixed aggregate particle size distribution and slurry rheological parameters was established. Tailings particle size distribution significantly affects slurry transport resistance, whereas flow velocity is relatively insensitive to particle size distribution. Particle segregation occurs under long-distance transport conditions, and particle size distribution significantly influences particle distribution. The particle size distribution of backfill aggregate is a key factor affecting the performance of the -long-distance pipeline transport of backfill slurry. However, the understanding of its impact on slurry flow behavior, transportation resistance, and particle distribution mechanisms remains incomplete and calls for further investigation. This study first obtained the rheological parameters of slurry and their variation laws under the influence of particle size distribution through rheological experiments. Subsequently, CFD numerical simulations are used to investigate the flow characteristics of slurry under long-distance transportation conditions. The findings demonstrate that a reduction in the mixed aggregate particle size leads to a significant increase in both the yield stress and plastic viscosity of the backfill slurry. The conveying distance shows a positive correlation with the slurry transportation resistance. Furthermore, the slurry exhibits plug flow behavior in both the horizontal and vertical pipe sections, whereas this plug flow pattern is no longer observed in the bend section. The tailings particles exhibit a distinct stratified distribution within the pipeline. In the horizontal pipe section, the graded tailings predominantly settle at the bottom, whereas the fine tailings remain suspended near the top. In contrast, in the vertical pipe section, the graded tailings tend to accumulate in the central zone of the pipe, while the fine tailings are dispersed along the pipe wall. As the content of graded tailings increases from 30% to 50%, both the zones with increased and decreased particle volume fractions expand, while the steady flow zone correspondingly shrinks. Meanwhile, the volume fraction of graded tailings at the bottom of the pipe rises significantly from 0.12 to 0.61. This research provides important theoretical support for the optimized matching and rational application of tailings particle size distribution in the design of long-distance pipeline transportation systems for mine backfill. [ABSTRACT FROM AUTHOR] |
| Copyright of Materials (1996-1944) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
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| Header | DbId: egs DbLabel: Engineering Source An: 193715687 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Influence of Particle Size Distribution on Rheology Behavior of Slurry and Flow Characteristics of Long-Distance Transportation. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Chen%2C+Xin%22">Chen, Xin</searchLink><relatesTo>1,2,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Jiang%2C+Zhongtao%22">Jiang, Zhongtao</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Junhui%22">Zhang, Junhui</searchLink><relatesTo>3,4,5</relatesTo> (AUTHOR)<i> zhangjunhui@xju.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Li%2C+Zeyu%22">Li, Zeyu</searchLink><relatesTo>1,4</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Materials+%281996-1944%29%22">Materials (1996-1944)</searchLink>. May2026, Vol. 19 Issue 9, p1881. 22p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Particle+size+distribution%22">Particle size distribution</searchLink><br /><searchLink fieldCode="DE" term="%22Slurry%22">Slurry</searchLink><br /><searchLink fieldCode="DE" term="%22Mine+waste%22">Mine waste</searchLink><br /><searchLink fieldCode="DE" term="%22Computational+fluid+dynamics%22">Computational fluid dynamics</searchLink><br /><searchLink fieldCode="DE" term="%22Pipeline+transportation%22">Pipeline transportation</searchLink><br /><searchLink fieldCode="DE" term="%22Fluid+dynamics%22">Fluid dynamics</searchLink><br /><searchLink fieldCode="DE" term="%22Rheology%22">Rheology</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Highlights: The relationship between mixed aggregate particle size distribution and slurry rheological parameters was established. Tailings particle size distribution significantly affects slurry transport resistance, whereas flow velocity is relatively insensitive to particle size distribution. Particle segregation occurs under long-distance transport conditions, and particle size distribution significantly influences particle distribution. The particle size distribution of backfill aggregate is a key factor affecting the performance of the -long-distance pipeline transport of backfill slurry. However, the understanding of its impact on slurry flow behavior, transportation resistance, and particle distribution mechanisms remains incomplete and calls for further investigation. This study first obtained the rheological parameters of slurry and their variation laws under the influence of particle size distribution through rheological experiments. Subsequently, CFD numerical simulations are used to investigate the flow characteristics of slurry under long-distance transportation conditions. The findings demonstrate that a reduction in the mixed aggregate particle size leads to a significant increase in both the yield stress and plastic viscosity of the backfill slurry. The conveying distance shows a positive correlation with the slurry transportation resistance. Furthermore, the slurry exhibits plug flow behavior in both the horizontal and vertical pipe sections, whereas this plug flow pattern is no longer observed in the bend section. The tailings particles exhibit a distinct stratified distribution within the pipeline. In the horizontal pipe section, the graded tailings predominantly settle at the bottom, whereas the fine tailings remain suspended near the top. In contrast, in the vertical pipe section, the graded tailings tend to accumulate in the central zone of the pipe, while the fine tailings are dispersed along the pipe wall. As the content of graded tailings increases from 30% to 50%, both the zones with increased and decreased particle volume fractions expand, while the steady flow zone correspondingly shrinks. Meanwhile, the volume fraction of graded tailings at the bottom of the pipe rises significantly from 0.12 to 0.61. This research provides important theoretical support for the optimized matching and rational application of tailings particle size distribution in the design of long-distance pipeline transportation systems for mine backfill. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Materials (1996-1944) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.3390/ma19091881 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 22 StartPage: 1881 Subjects: – SubjectFull: Particle size distribution Type: general – SubjectFull: Slurry Type: general – SubjectFull: Mine waste Type: general – SubjectFull: Computational fluid dynamics Type: general – SubjectFull: Pipeline transportation Type: general – SubjectFull: Fluid dynamics Type: general – SubjectFull: Rheology Type: general Titles: – TitleFull: Influence of Particle Size Distribution on Rheology Behavior of Slurry and Flow Characteristics of Long-Distance Transportation. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Chen, Xin – PersonEntity: Name: NameFull: Jiang, Zhongtao – PersonEntity: Name: NameFull: Zhang, Junhui – PersonEntity: Name: NameFull: Li, Zeyu IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 05 Text: May2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 19961944 Numbering: – Type: volume Value: 19 – Type: issue Value: 9 Titles: – TitleFull: Materials (1996-1944) Type: main |
| ResultId | 1 |
