Next Article in Journal
Vertical Heterogeneity of the Shale Reservoir in the Lower Silurian Longmaxi Formation: Analogy between the Southeastern and Northeastern Sichuan Basin, SW China
Next Article in Special Issue
Use of Cemented Super-Fine Unclassified Tailings Backfill for Control of Subsidence
Previous Article in Journal
The Role of Seawater on the Trace Element Geochemistry of Some UK Coals and a Tribute to Goldschmidt
Previous Article in Special Issue
Sustainable Reuse of Mine Tailings and Waste Rock as Water-Balance Covers
Article Menu
Issue 8 (August) cover image

Export Article

Open AccessArticle
Minerals 2017, 7(8), 149; https://doi.org/10.3390/min7080149

CFD Simulation of Pipeline Transport Properties of Mine Tailings Three-Phase Foam Slurry Backfill

School of Resources and Safety Engineering, Central South University, Changsha 410083, China
*
Authors to whom correspondence should be addressed.
Received: 12 July 2017 / Revised: 10 August 2017 / Accepted: 13 August 2017 / Published: 17 August 2017
(This article belongs to the Special Issue Minerals in Mine Wastes: Contributions to the Circular Economy)
Full-Text   |   PDF [10842 KB, uploaded 21 August 2017]   |  

Abstract

A three-dimensional backfill pipeline transport model is developed using the computational fluid dynamics (CFD) technique, which is applied to study the pipeline transport properties of three-phase foam slurry backfill (TFSB). Based on rheological property tests and CFD simulations, the foam phase, pressure, and velocity in the pipeline system are investigated using the CFD mixture method for different bubble volume fractions and bubble diameters. The simulation results indicate that TFSB can maintain a steady state during pipeline transport, experience a markedly reduced pipeline transport resistance, and exhibit better liquidity than conventional cement slurry. Furthermore, as the bubble volume fraction increases, the resistance of the pipeline decreases and the fluidity improves. By contrast, the bubble diameter has little effect on the transport properties of TFSB. The combined results of CFD simulations, slump tests, and strength tests indicate that, when the bubble volume fraction is 15–20 vol %, TFSB can satisfy the necessary strength requirements and exhibit self-flowing transport. The CFD technique provides an intuitive and accurate basis for pipeline transport research and has the potential for wider application in studies of mine backfill. View Full-Text
Keywords: three-phase foam slurry backfill (TFSB); pipeline transportation properties; computational fluid dynamics (CFD) simulation; bubble volume fraction three-phase foam slurry backfill (TFSB); pipeline transportation properties; computational fluid dynamics (CFD) simulation; bubble volume fraction
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Chen, X.; Zhou, J.; Chen, Q.; Shi, X.; Gou, Y. CFD Simulation of Pipeline Transport Properties of Mine Tailings Three-Phase Foam Slurry Backfill. Minerals 2017, 7, 149.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Minerals EISSN 2075-163X Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top