膏体搅拌过程中多尺度颗粒体系的流变特性：综述

李翠平; 李雪; 阮竹恩

doi:10.1007/s12613-023-2601-1

Volume 30 Issue 8

Aug. 2023

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文章导航 > 矿物冶金与材料学报（英文） > 2023 > 30(8): 1444-1454

Cuiping Li, Xue Li, and Zhu’en Ruan, Rheological properties of a multiscale granular system during mixing of cemented paste backfill: A review, Int. J. Miner. Metall. Mater., 30(2023), No. 8, pp. 1444-1454. https://doi.org/10.1007/s12613-023-2601-1

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Cuiping Li, Xue Li, and Zhu’en Ruan, Rheological properties of a multiscale granular system during mixing of cemented paste backfill: A review, Int. J. Miner. Metall. Mater., 30(2023), No. 8, pp. 1444-1454. https://doi.org/10.1007/s12613-023-2601-1

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特约综述

膏体搅拌过程中多尺度颗粒体系的流变特性：综述

1)
北京科技大学金属矿山高效开采与安全教育部重点实验室, 北京 100083, 中国
2)
北京科技大学顺德创新学院, 佛山 528399, 中国
3)
北京科技大学土木与资源工程学院, 北京 100083, 中国

通讯作者:
阮竹恩 E-mail: ustb_ruanzhuen@hotmail.com

文章亮点

(1) 探讨了细观力学与结构演化机制的关联性。

(2) 分析了剪切作用、浓度与尺度对膏体流变特性的影响规律。

(3) 系统地总结了膏体的宏细观流变模型。

中文摘要

膏体充填技术是实现矿山绿色开采的有效手段，搅拌是膏体充填技术的关键环节。搅拌环节的目标是制备满足不分层、不离析、不脱水特性的膏体。膏体作为一种多尺度颗粒体系，膏体均质化制备是搅拌环节面临的挑战之一。搅拌制备过程中的高剪切、高浓度与多尺度，使充填料浆表现出复杂的流变特性。为此，通过系统综述多尺度颗粒体系的颗粒间细观力学与结构演化的研究进展，探讨了不同影响因素对膏体流变特性的作用效果，从宏观与细观层面梳理了膏体的流变模型，明确了细观力学作用与结构演化是膏体流变特性发生变化的根本原因，由此提出了膏体制备存在的问题与未来发展趋势，以期改变膏体充填实践先行理论滞后的局面。

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Invited Review

Rheological properties of a multiscale granular system during mixing of cemented paste backfill: A review

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Abstract

Abstract

The technology of cemented paste backfill (CPB) is an effective method for green mining. In CPB, mixing is a vital process aiming to prepare a paste that meets the non-stratification, non-segregation, and non-bleeding requirements. As a multiscale granular system, homogenization is one of the challenges in the paste-mixing process. Due to the high shearing, high concentration, and multiscale characteristics, paste exhibits complex rheological properties in the mixing process. An overview of the mesomechanics and structural evolution is presented in this review. The effects of various influencing factors on the paste’s rheological properties were investigated, and the rheological models of the paste were outlined from the macroscopic and mesoscopic levels. The results show that the mechanical effects and structural evolution are the fundamental factors affecting the rheological properties of the paste. Existing problems and future development trends are presented to change the practice where the CPB process comes first and the theory lags.
- cemented paste backfill;
- rheology;
- mixing process;
- mesomechanics;
- structural evolution

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