Improving clay‐based tailings disposal: Case study on coal tailings

Kretser, Ross de; Scales, Peter J.; Boger, David V.

doi:10.1002/aic.690430724

Cited by 72 publications

(38 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The zeta potentials are negative under all pH and electrolyte conditions studied and appear to be dominated by the permanently negatively charged siloxane basal faces. The magnitude of the zeta potential for smectite particles is in agreement with collated data from previous investigations [20] but lower in magnitude than values obtained by others [6,21] for reasons that are unclear. Likewise, the zeta potential of kaolinite particles (Fig.…”

Section: Cryogenic Scanning Electron Microscopysupporting

confidence: 91%

Improved dewatering behavior of clay minerals dispersions via interfacial chemistry and particle interactions optimization

McFarlane

Bremmell

Addai‐Mensah

2006

Journal of Colloid and Interface Science

View full text Add to dashboard Cite

Section: Cryogenic Scanning Electron Microscopysupporting

confidence: 91%

Improved dewatering behavior of clay minerals dispersions via interfacial chemistry and particle interactions optimization

McFarlane

Bremmell

Addai‐Mensah

2006

Journal of Colloid and Interface Science

View full text Add to dashboard Cite

“…Characteristics of the process water obtained from the tailings slurries were also widely published. Results presented (de Kretser, et al, 1997;Ofori, et al, 2011) suggest that coal preparation tailings in the fines fraction consist mostly of phyllosilicate minerals, such as kaolinite, illite, muscovite, mica, and mixed-layer illite/montmorillonite clays, along with quartz. Residual coal particles are detected predominately in the coarse fraction .…”

Section: Size Classificationmentioning

confidence: 90%

Current state of fine mineral tailings treatment: A critical review on theory and practice

Wang

Harbottle

Liu

et al. 2014

Minerals Engineering

336

169

View full text Add to dashboard Cite

Highlights Presented facts on escalating generation of fine mineral tailings worldwide.  Overview of coal, alumina, oil sands, and base metals tailings characteristics.  Reviewed theoretical and industrial developments for tailings management.  Determined numerous knowledge gaps between current theories and practices.  Identified opportunities for improvement towards more sustainable practices. Graphical AbstractEvolution of fine mineral tailings treatment objectives.Figures "Flocculated solids" and "Stackable solids" are adopted from Alamgir, et al. (2012), permission pending. The last figure "Reclaimed land" is adopted from Golder Associates (2009), permission pending. AbstractThe mining industry produces fluid fine mineral tailings on the order of millions of tonnes each year, with billions of tonnes already stored globally. This trend is expected to escalate as demand for mineral products continues to grow with increasingly lower grade ores being more commonly exploited by hydrometallurgy. Ubiquitous presence and enrichment of fine solids such as silt and clays in fluid fine mineral tailings prevent efficient solid-liquid separation and timely re-use of valuable process water. Long-term storage of such fluid waste materials not only incurs a huge operating cost, but also creates substantial environmental liabilities of tailings ponds for mining operators. This review broadly examines current theoretical understandings and prevalent industrial practices on treating fine mineral tailings for greater water recovery and reduced environmental footprint of mining operations.

show abstract

“…The materials come from the following industrial sectors: minerals [31,[36][37][38][39], clay [18], coal [19], potable water treatment (WT) [40,41], wastewater treatment (WWT) [29,33], starch, pulp-andpaper [42], dairy and dredging, and vary from slightly compressible to very compressible. Interestingly, the compressibility and permeability of many of these materials can be described by conventional power-law functional forms at medium to high volume fractions, but these functional forms do not fit the data at lower volume fractions due to the order of magnitude changes near the gel point and require more complicated or combined functions to cover the full volume fraction range.…”

Section: Methodsmentioning

confidence: 99%

“…The term "compressional rheology" is used to describe this version of consolidation theory following Boger et al [1,19,20]. The term is not without its critics, since it can be argued fairly that topic is merely a sub-set of suspension mechanics more generally: indeed, we note that, when applied to sedimentation, the theory is identical in most respects to that of the sedimentation of colloidally stable (i.e.…”

Section: Introductionmentioning

confidence: 99%