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

Cuiping Li; Xue Li; Zhu’en Ruan

doi:10.1007/s12613-023-2601-1

Volume 30 Issue 8

Aug. 2023

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Article Navigation > International Journal of Minerals, Metallurgy and Materials > 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

Cite this article as:

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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Invited Review

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

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Corresponding author:
Zhu’en Ruan E-mail: ustb_ruanzhuen@hotmail.com
Received: 8 September 2022; Revised: 10 January 2023; Accepted: 15 January 2023; Available online: 18 January 2023

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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