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An electrochemical investigation on the mechanisms of interfacial interactions of a xanthate collector on PGM mineral surfaces in the presence of ions
By L Dzinza, K C. Corin, M Tadie
The recycling of process water comes with increased electrolyte concentrations that affect water quality, which may in turn affect the flotation performance of valuable minerals (Hirajima et al, 2016)
Aug 24, 2022
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Evaluating rheological features inside tumbling mills using DEM data previously validated against PEPT measurements
By I Govender, T L. Moodley
Tumbling mills are grossly inefficient, using only 5 per cent of the total energy supplied for actual breakage. A significant proportion of this inefficiency is unavoidable owing to geometric limitati
Aug 24, 2022
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Considering the effects of milling media and water chemistry in the flotation of selected base metal sulfides
By S N. Nyoni, K C. Corin, C T. O’Connor
Considering future water scenarios, as influenced by the increasing scarcity of water and the move towards sustainable process engineering etc, the closed water circuit becomes an important point of s
Aug 24, 2022
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Further investigations into the relationship between the non-ideal behaviour of a particle-collector aggregate as determined using partial molar excess Gibbs energy and its hydrophobicity
By K C. Corin, C T. O’Connor
In recent years it has been shown that the concept of using partial molar excess Gibbs energy (G̅ex) to explain the behaviour of collectors in the recovery of minerals can be usefully applied to expla
Aug 24, 2022
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Practical measures of process efficiency and opportunity
By G R. Ballantyne, A N. Mainza, M S. Powell, M Evertsson
Quantifying the performance of a comminution circuit relative to the potential that can be achieved is a standard requirement in justifying operating practice (the stick) and seeking operational upsid
Aug 24, 2022
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Traversing the Valley of Death – upscaling the REFLUX™ flotation cell
By M J. Cole, J Zhou, D J. Borrow, S M. Iveson, K P. Galvin, J L. Sutherland
New technologies can easily take around ten years to commercialise. Strong research support is needed in parallel with the process of innovation and commercialisation, in building a deeper understandi
Aug 24, 2022
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Time Series Modeling of Methane Gas in Underground Mines (Mining, Metallurgy & Exploration)
By JUAN DIAZ, Kray Luxbacher, Steven Schafrik, Dionissios T. Hristopulos, Zach Agioutantis
Methane gas is emitted during both underground and surface coal mining. Underground coal mines need to monitor methane gas emissions to ensure adequate ventilation is provided to guarantee that methan
Aug 2, 2022
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Novel ceramic composites produced from coal discards with potential application in the building and construction sectors
By R. Trammell, O. Eterigho-Ikelegbe, S. O. Bada
In response to the enormous amounts of coal discard generated during coal mining and preparation, the development of an efficient and sustainable strategic use of this resource is essential. Furthermo
Aug 2, 2022
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Co-firing of high-ash discard coal and refuse-derived fuel – ash and gaseous emissions
By K. Isaac, S. O. Bada
This research focuses on the co-firing of discard coal with refuse-derived fuel (RDF) to utilize this abundant resource in South Africa for energy generation and reduce the volume of waste disposed of
Aug 2, 2022
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Production of Al(III)-K(I)-Ti(IV)- sulphate-containing leach liquor from metakaolinite-containing ash derived from South African coal fines
By R. H. Matjie, J. R. Bunt, A. C. Collins, J. C. van Dyk, C. A. Strydom
South African discard coal fines and K₂CO₃ blends were heated in a laboratory-scale rotary kiln to produce ashes for H₂SO₄ leaching tests. The optimized H₂SO₄ leaching conditions of 6.12 mol.dm³ (M) H
Aug 2, 2022
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Fully automated coal quality control using digital twin material tracking and statistical model predictive control for yield optimization during production of semi soft coking- and power station coal
By B. J. Coetzee, P. W. Sonnendecker
The quality control of a two-stage coal washing process involves several complex components that need to be modelled accurately, to enable autonomous control of the process. The first objective is to
Aug 2, 2022
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Stress Redistribution In A Longwall Yield Pillar – A Comparison Between Active Seismic Tomography And Theory
By ERIK C. WESTMAN, JESSICA M. WEMPEN, DALLAN J. COONS, WILLIAM G. PARISEAU, MICHAEL K. MCCARTER
Safe, efficient underground mining is dependent upon proper pillar sizing. Pillar sizing is typically based on a combination of observation of prior behavior, point measurements, theory and numerical
Aug 1, 2022
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Experimental Study Of Improving A Mine Ventilation Network Model Using Continuously Monitored Airflow
By RICHARD A. THOMAS, Liming Yuan, Lihong Zhou, DAVOOD BAHRAMI
Mine ventilation simulation software has become an essential tool for the mining industry to design and manage mine ventilation operations. Building a well-calibrated mine ventilation network is time
Aug 1, 2022
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Real‑time Photoacoustic Measurements of the Mass Concentration of Respirable Crystal Silica Dust: Theory
By Charles Kocsis, Pedro Nascimento, W. Patrick Arnott, Samuel J. Taylor
Respirable crystalline silica (RCS) is an inhalation health hazard for mining and industrial work environments and must be monitored. We provide theoretical analysis of real-time measurements for dete
Jul 31, 2022
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Exploration of Limestone Pillar Stability in Multiple‑Level Mining Conditions Using Numerical Models (Mining, Metallurgy & Exploration)
By Michael Murphy, Gamal Rashed, Brent Slaker
Pillar stability continues to be a significant concern in multiple-level mining conditions, particularly for deep mines when pillars are not stacked or the thickness of interburden between mining leve
Jul 27, 2022
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An Empirical Comparison of Discrete Choice Models for Mining Stakeholder Analysis
By Kwame Awuah-Ofei, Sisi Que, Shaochun Yuan, Yumin Wang, Ziwei Ding
This research sought to facilitate improved stakeholder analysis in mining by providing further insights into the preferences of local community members using discrete choice theory. While recent rese
Jul 25, 2022
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Probability of failure and factor of safety in the design of interramp angles in a large open iron ore mine
By A. F. Silva, R. Dockendorff, J. M. Girao Sotomayor, V. F. Navarro Torres, C. Castro
This paper shows the importance of performing probabilistic analyses in open pits, especially for mine planning, which can lead to more efficient ore extraction and meeting the acceptability criteria
Jul 2, 2022
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Experimental and CFD Simulation Techniques for Coal Dust Explosibility: A Review
By Santosh Kumar Ray, DEBASHISH MISHRA, Niroj Kumar Mohalik, SOMU MANDAL, Jai Krishna Pandey, Asfar Mobin Khan
Coal is a low-cost and high-calorific-value fuel. The coal mining industry worldwide has been suffering from severe accidents due to coal dust explosion hazards since its inception. Statistically, it
Jun 29, 2022
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How innovation trumps isolation, one mine at a time
By J Pearce, R Ramanathan
hortly after the World Health Organization declared COVID-19 a pandemic, the words ‘social distancing’ entered the global lexicon. The effects on the public of social distancing, lockdowns and travel
Jun 22, 2022
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Re-defining Compliance Planning through data integration and ultra-short-term scheduling
By C Fong
Compliance Planning is an active approach to ensure mining operations align more closely to their longer-term plans. Through Compliance Planning, operations can not only measure their performance on i
Jun 22, 2022