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A visit to the research on Wits-Ehac index and its relationship to inherent coal properties for Witbank Coalfied - Synopsis
By S. Uludag
Spontaneous combustion of coal has been studied by laboratory techniques using an apparatus in a small-scale laboratory testing. Coal?s inherent characteristics can be measured using Differential Ther
Jan 1, 2007
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Characterization And Batch Testing Of A Secondary Lead Slag
By A. E. Lewis
The emphasis of this paper is on the characterization and testing of the slag produced by a secondary lead refinery. This work forms part of a broader investigation aimed at reducing loss of valuable
Jan 1, 2000
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Design And Development Of A Novel Thickener Feedwell Using Computational Fluid Dynamics - Synopsis
By T. V. Nguyen
The feedwell performance in gravity thickeners and clarifiers relies on the efficient mixing between solid particles and flocculant to achieve effective flocculation, as well as energy dissipation of
Jan 1, 2012
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Coupled Elasto-Plastic Model for Hydraulic Fracturing of Unconsolidated Formations
By I. Gil, J. -C. Roegiers
Abstract Hydraulic fracturing is a technology that has been utilized for more than 50 years in the oil industry. It was originally used for stimulating hard, brittle formations which typically exh
Jan 1, 2003
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A quantitative evaluation of the load bearing capacity of ground and characteristic curves of tunneling
By T. Nishimura, H. Kiyama, K. Wakimoto
Discussion on the load bearing capacity of ground and the stability of tunnel is presented. We derive a simplified solution of a circular lined-tunnel in an elastic ground. The solution results in a b
Jan 1, 2003
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Production, Characteristics And Use Of Ferrochromium Slags
By Mauri Kauppi, Pekka Niemelä
World HCFeCr production is 6.0 million tonnes. Correspondingly 1.1-1.6 t slag / t FeCr is produced depending on the raw material basis. Essentially all FeCr is produced in submerged arc furnaces, whi
Jan 1, 2007
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Dense-Medium Beneficiation Of Fine Coal Revisited - Introduction
By G. J. de Korte
Dense-medium beneficiation of fine (minus 0.5 mm) coal is not a new concept and has been used in South Africa previously. The dense-medium fine coal plant at Greenside Colliery operated for almost 18
Jan 1, 2002
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Elements For Effective Design Of Abrasion Resistant Concretes
By D. van Heerden
In the mining industry abrasion caused by both sliding and impact have over the years resulted in costly damage to installations such as ore passes and silos. Good geotechnical practices combined with
Jan 1, 2005
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The Process Design Of Gold Leaching And Carbon-In-Pulp Circuits - Introduction
Assuming that a gold ore has been effectively ground to ensure maximum economic liberation of gold, the circuits that will have the most effect on the successful operation of a gold plant will be that
Jan 1, 1999
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The Effect Of Overloading And Premature Centrifuging On The Power Of An Autogenous Mill
By M. A. van Nierop
Load behaviour in an industrial mill has been measured directly by inserting probes through liner bolts. The data from conductivity probes have indicated the presence of premature centrifuging during
Jan 1, 1997
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Structural Analysis Of Molten Na2O-NaF-SiO2 System By Raman Spectroscopy And Molecular Dynamics Simulation
By H. Urata, K. Ishii
To determine the effect of F ions in the molten alkali silicate systems on their structures, quenched Na2O-SiO2-NaF systems were investigated by Raman spectroscopy and molecular dynamics simulation. T
Jan 1, 2004
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Rockburst Prediction - Case Studies Using A Kinematics Of Failure Approach
By W. de Beer
We present aspects of one of several ongoing case studies used in the development of prediction techniques for major seismic instabilities. The current investigation centres on accelerated coseismic d
Jan 1, 1998
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Viscous behaviour of CaO-SiO2-A12O3-MgO-FeO slag
By S. H. Yi, J. R. Kim, Y. S. Lee
The viscosities of CaO-SiO2-Al2O3-MgO-FeO slags were measured under conditions ofCaO/SiO2=1.15–1.6, 10–13 percent Al2O3, 5–10 percent MgO and 5–20 percent FeO. Slag viscosity decreased with increasing
Jan 1, 2004
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Mineral Property Valuation In South Africa: A Basket Of Assets And Legal Rights To Consider
By F. T. Cawood
The distinction between real estate ownership and that of interests in the property is fundamental to the appraisal of mineral properties. This distinction affects the nature and understanding of secu
Jan 1, 2004
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Hydrometallurgical Treatment Of Haib Copper Ore
By W. J. Schlitt
The Namibian Copper Joint Venture has been formed to undertake development of the Haib copper deposit, one of the largest undeveloped copper resources in Africa. The development programme includes ext
Jan 1, 1999
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Thermal Conductivity Of Solidified Manganese-Bearing Slags - A Preliminary Investigation
By J. D. Steenkamp
Keywords: Thermal, conductivity, diffusivity, expansion, history, density, specific heat capacity, industrial rich high-carbon manganese slag The thermal conductivity of slag is an important para
Jan 1, 2011
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Corrosion of Lead Anodes in Base Metals Electrowinning
By Jerry Gagnon, Matt Burr, Dave Evans, Timothy Ellis, Davies Kakengela, Abbas Mirza, Larry Webb, François Leclercq, Andrew Johnston
Lead-based alloys are the primary anodes used in electrowinning from sulphate-based aqueous systems. Lead anode technology has evolved over the years, migrating from pure lead and lead-antimonial allo
Jan 1, 2015
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Maximum height estimation for mine waste dumps
By S. Chai
Waste dumps are widely used to discharge stripped mine wastes in open pit mining methods. As mining progresses, the height of the waste dumps will increase gradually, which may induce sliding failure
Oct 1, 2022
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Collection, Treatment And Re-Use Of Mine Water In The Olifants River Catchment
By H. C. van Zyl
Mine water in the Upper Olifants River Catchment in Mpumalanga(upstream of Loskop Dam) is at times discharged into local streams, resulting in local acidification and regional salination of surface wa
Jan 1, 2001
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A Model For Direct Dragline Casting In A Dipping Coal-Seam
By B. Erdem
This article introduces a computer model, which emphasizes panel design for draglines deployed in direct side-casting mode. The study covers flat and inclined coal-seam conditions with the dragline op
Jan 1, 2004