Volume change behaviour of mixtures of coarse coal reject and tailings

Shokouhi, Ali and Williams, David J. (2017) Volume change behaviour of mixtures of coarse coal reject and tailings. Mining Technology: Transactions of the Institutions of Mining and Metallurgy: Section A, 126 3: 163-176. doi:10.1080/14749009.2016.1277649


Author Shokouhi, Ali
Williams, David J.
Title Volume change behaviour of mixtures of coarse coal reject and tailings
Journal name Mining Technology: Transactions of the Institutions of Mining and Metallurgy: Section A   Check publisher's open access policy
ISSN 1743-2863
0371-7844
Publication date 2017-07-01
Year available 2017
Sub-type Article (original research)
DOI 10.1080/14749009.2016.1277649
Open Access Status Not yet assessed
Volume 126
Issue 3
Start page 163
End page 176
Total pages 14
Place of publication Abingdon, Oxfordshire United Kingdom
Publisher Taylor & Francis
Language eng
Abstract Co-disposal of fine-grained wastes or tailings and coarse-grained wastes or coarse reject generated on the processing of the run-of-mine coal, offers potential economic, geotechnical and environmental advantages over conventional separate disposal practices. To evaluate the compressibility behaviour and performance of coarse reject, tailings and mixtures of coarse reject and tailings, laboratory compression testing was performed in a large, purpose-built consolidometer on scalped clay mineralrich coarse reject, on tailings slurry, and on combined scalped coarse reject and tailings at two dry mass ratios of 6:1 and 3:1 (coarse reject to tailings). In this paper, the results of the compression testing on the specimens are compared and the settling and compressibility behaviour of the tailings slurry, effect of mixture ratio and scalping on the permeability and compressibility of the mixtures are discussed. The results of this investigation can assist in coal washery waste management, through the improved understanding of the geotechnical behaviour of codisposed coal washery wastes.
Keyword Coal mine washery wastes
Coarse reject
Co-disposal
Compressibility
Settling
Tailings slurry
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Civil Engineering Publications
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