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Some problems in estimation of the optimum exploitation life of bucket wheel excavators
By R. Zivojinovic, S. Vujic
The structural age of the capital mining machinery, representing a part of the system of the Electric Power Industry of Serbia, has been dictated by the initiation and development of open pit coal min
Jan 1, 2003
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Hybrid finite-/discrete-element modelling of progressive failure in massive rock slopes
By H. Willenberg, J. S. Coggan
ABSTRACT: Although individually both continuum and discontinuum numerical analyses provide useful means to analyze rock slope stability problems, complex failures typically involve mechanisms related
Jan 1, 2003
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Reduction Of Chromite Ore At Different Flow Rates Of Inert Gas
By Dolly Chakraborty, S. Ranganathan, S. N. Sinha
Pre-reduction of chromite outside the submerged-arc furnace (SAF) can significantly lower the specific power consumption in the SAF process. Conventional processes for the pre-reduction of the ore ope
Jan 1, 2007
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Predication of P-wave transmission across a rock fracture with a dynamic normal behavior
By X. B. Zhao, J. G. Cai
The purpose of this paper is to incorporate the dynamic BB model of rock fracture normal behaviour into Universal Distinct Element Code (UDEC), and to conduct UDEC modelling to predict stress wave pro
Jan 1, 2003
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A design protocol for mining remnants in hard rock mining operations utilising a rock mass classification system
A well known rock mass classification system has been altered slightly to address the issues found under remnant mining conditions. By detail study of the expected fracture patterns and local geology,
Jan 1, 2003
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Evaluating the Coal Bump Potential for Gateroad Design in Multiple-Seam Longwall Mining: A Case Study
By J. Bal, V. D. Dao, W. Li
"SynopsisThis study proposes a methodology for evaluating the risk of coal bumps in multiple-seam longwall mining. Both the stress field and the total energy release (TER) during retreat were evaluate
Jan 1, 2015
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The testing of suspensions seats for the control of whole-body vibration (WBV) in the South African mining industry
By J. L. van Niekerk, J. Gunaselvam
This study investigates the use of appropriate seating systems for the control of whole-body vibration exposure in vehicles used in the SA mining industry. Six suspension seats were tested with six t
Jan 1, 2003
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Sulphuric Acid Plant Water Saving Options
By R. J. Forzatti
The production of sulphuric acid from sulphur generates heat. The majority of this heat is recovered as steam and is often used to generate electricity. Heat not recovered as steam is rejected to cool
Jan 1, 2014
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Effects of flotation operational parameters on froth stability and froth recovery
By K. Gharibi, A. Dehghani, S. Farrokhpay, M. Aghajanloo, M. Ostadrahimi
The effect of flotation operational parameters on froth stability and froth recovery was studied. Froth stability was measured using a special column. To determine the froth recovery, the froth height
Jan 1, 2021
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The necessity of 3D analysis for open-pit rock slope stability studies: Theory and practice
By A. McQuillan, N. Bar
Geotechnical models developed during the planning stages of open pit mines are three-dimensional so as to capture the spatial variation in lithological, structural, hydrogeological, and geomechanical
Feb 6, 2023
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The Influence of Selected Biomass Additions on the Co-Pyrolysis with an Inertinite-Rich Medium Rank C Grade South African Coal
By T. Z. Sehume, J. R. Bunt, J. C. van Dyk, C. A. Strydom
"SynopsisCo-pyrolysis of four biomass samples (hardwood chip, softwood chip, pinewood chip, and sugarcane bagasse) with an inertinite-rich medium rank C South African coal was investigated. Proximate
Jan 1, 2015
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What boundary conditions should we apply? Applications to tunneling and to the AECL Underground Research Laboratory
By B. Amadei, F. Tonon
Rock stress measurement is cast in the more general context of the determination of boundary conditions for rock engineering. A study on the effect of elastic anisotropy on underground excavations rev
Jan 1, 2003
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Student prizegiving
The first annual student prizegiving function of the South African Institute of Mining and Metallurgy was held in the Dorothy Susskind Auditorium, University of the Witwatersrand, on Thursday, 26th Ma
Jan 1, 1977
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Analyses of Tunnel Stress Failures at Pyhäsalmi Mine
By M. Hakala, P. Tolppanen
A method to predict stress-induced failures around excavations based on the mapped geological and rock mechanical information is studied. Totally of 7 km of newly excavated tunnels are mapped in the I
Jan 1, 2003
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Structural frame analysis of an electrically powered robotic subsea dredging crawler under static loading conditions
By A. K. Raji, M. O. Ojumu
Robotic subsea dredging crawlers are dynamically and remotely controlled vehicles that are used for deep sea mining and recovery operations. These exploration machines are released from a mother ship
Oct 3, 2023
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Electrochemical Studies Of The Interaction Of Ethyl Xanthate With Pd-Bi-Te
By J. A. Venter, M. K. G. Vermaak
There are practical indications that flotation recovery of palladium bismuth tellurides is poor. This work tested whether this can be caused by a lack of interaction of the collector with the tellurid
Jan 1, 2004
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Time-dependent behaviour of Tournemire argillites (France)
By A. Rejeb
ABSTRACT: This paper contributes to the study of underground structures in argillaceous media, especially Tournemire argillites (Aveyron, France). The basic results obtained over six years in two expe
Jan 1, 2003
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Risks and challenges affecting opencast pillar mining in previously mined underground bord and pillar workings
By P. L. Ngwenyama, W. W. deGraaf
South Africa is one of the leading producers and exporters of coal globally. A significant amount of the country’s production is obtained from previously mined underground bord and pillar workings. Th
Dec 1, 2021
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Effect of discontinuity orientation and spacing on the blasting performance in some open cast mines of TKI•-Turkey
By H. A. Bilgin, A. Özgenog?lu, G. Kaçar
In this study, the influences of rock mass properties on the blasting performance in open cast mines are investigated. To this end, discontinuity spacings and discontinuity orientations are measured a
Jan 1, 2003
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Determination of Magnitude Completeness from Convex Gutenberg-Richter Graphs in the Central Portion of the Kiirunavaara Mine
By A. Eitzenberger
This paper describes a study of seismic records from the Kiirunavaara mine footwall which were interpreted in relation with numerical models developed outside the study. Seismic data was retrieved fro
Jan 1, 2017