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A Proposed Approach for Modelling Competitiveness of New Surface Coal Mines
By J. W. Joubert, R. C. W. Webber-Youngman, M. D. Budeba
"SynopsisCost estimation for surface coal mines is a critical practice that affects both profitability and competitiveness. New mines require these costs to be estimated using available information be
Jan 1, 2015
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Research Into Melting And Casting Of Brass Scrap For Upliftment Purposes
By M. Moseki
Paper written on project work carried out in partial fulfilment of B.Sc. (Eng.) (Metallurgy of Materials) degree This paper presents the research into melting of scrap for job creation purposes in
Jan 1, 2002
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Internal Corrosion Of Slurry Pipelines Caused By Microbial Corrosion: Causes And Remedies (823fbe7e-37bc-47a1-8382-1714937f7253)
By C. Ringas
Pipelines are used extensively in industry to convey various products. Internal corrosion of pipelines can lead to perforation and leakage of the product. A growing problem, not often accurately recog
Jan 1, 2007
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An Evaluation Framework for Virtual Reality Safety Training Systems in the South African Mining Industry
By E. A. van Wyk, M. R. de Villiers
"Mining companies strive to increase and maintain production, while simultaneously remaining competitive in the global economy. Furthermore, they must ensure workers’ safety and maintain good safety r
May 1, 2019
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Understanding heavy mineral separation duties using finite element analysis - Synopsis
Heavy mineral deposits are becoming more complex in terms of their compositional variation, particle mineralogy and size distributions, and present challenges for the operation of separation equipment
Jan 1, 2010
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The Economics of Exhaustible Mineral Resources—Concepts and Techniques in Optimization Revisited
By C. Hutton
"SynopsisThe last commodities supercycle (2003 to 2011) was characterized by a belief in volume at any cost, where absolute output was deliberately prioritized over productivity considerations. This p
Jan 1, 2015
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Self-similarity and multiplicative cascade models
By F. Agterberg
In his 1978 monograph ‘Lognormal-de Wijsian Geostatistics for Ore Evaluation’, Professor Danie Krige emphasized the scale-independence of gold and uranium determinations in the Witwatersrand goldfield
Jan 1, 2015
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Solutions to common design and operating problems in spiral circuits
By R. Abela
In over ninety per cent of mineral sand plants, the most commonly used equipment is the spiral concentrator. The tonnage treated over typical spiral plants can range from as low as 200 ton per hour up
Jan 1, 2003
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A Heuristic Sublevel Stope Optimizer With Multiple Raises
By X. Bai
A new heuristic sublevel mining stope optimizer is presented. The optimizer seeks the best locations and lengths of a series of vertical raises that, together with the blocks linked to each raise, def
Jan 1, 2014
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Corrosion Protection Of Reinforcement For Concrete Structures (VOLUME 107)
By R. E. Wilmot
The problem of corrosion of reinforcement in concrete structures is internationally recognized and represents the single biggest expenditure in the preservation of steel reinforced concrete structures
Jan 1, 2007
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An Integrated Approach Of Waste Issues On Metalurgical Sites
By Gaspard Devos
1. A NEW CONTEXT FOR METAL INDUSTRY Producers and owners of industrial extractive sites are living hard times due to Environmental pressure and liabilities. This is valid whatever the region i
Jan 1, 2005
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Rheological Assessment Of Titanium MIM Feedstocks - Synopsis
By J. M. Benson
Titanium is an exciting structural material that can offer significant strength-to-weight advantages over currently used alloys. However, its Achilles? heel is its costly, energy-intensive production
Jan 1, 2011
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Cave management and secondary breaking practices at Palabora Mining Company - Synopsis
By S. Ngidi
Palabora Mining Company operates a low grade underground copper mine situated in the Limpopo Province, South Africa. Full production was first reached in May 2005 after a successful transition from an
Jan 1, 2007
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A design methodology for mechanised stoping with stable support pillars at depth in the Bushveld Complex
By D. A. Spencer, L. J. Gardner
In light of the apparent productivity benefits provided by mechanised stoping, Impala Platinum Limited commissioned a study to investigate its possible implementation for mining reserves located 1200
Jan 1, 2003
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Cokriging of compositional balances including a dimension reduction and retrieval of original units
By V. Pawlowsky-Glahn, E. Pardo-Igúzquiza, J. J. Egozcue, R. A. Olea
Compositional data constitutes a special class of quantitative measurements involving parts of a whole. The sample space has an algebraic-geometric structure different from that of real-valued data. A
Jan 1, 2015
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Feasibility study of electricity generation from discard coal
By A. Engelbrecht, B. North, B. Oboirien
"There is large electricity generation potential in discard coal, both in stockpiles and current arisings. Power stations with a combined capacity of up to 18 GW electrical (GWe) could be fuelled by d
Jan 1, 2015
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Acid Leaching Of Heavy Metals From Bentonite Clay, Used In The Cleaning Of Acid Mine Drainage ? Synopsis
By F. Enslin
Heavy metals and sulphates in acid mine drainage (AMD) can beadsorbed onto bentonite clay, leaving clean water and a heavy metal loaded clay precipitate as products. Due to the toxicity of heavy metal
Jan 1, 2010
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Destruction Of Underground Methane At Beatrix Gold Mine - Synopsis
Beatrix Gold Mine, a deep-level gold mine in the Free State province of South Africa, has the highest methane emission rate of any gold mine in the country. Methane is emitted from underground sources
Jan 1, 2011
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Monte Carlo Simulation Of Pt-Al Thin Film Diffusion - Synopsis
By R. A. Harris
In this study Pt-Al thin films were prepared via electron beam physical vapour deposition (EB-PVD) with an atomic concentration ratio of Pt25:Al75. These films were heat treated at temperatures rangin
Jan 1, 2011
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A Mathematical Model Of Laser Surface Heat-Cooling Treatment For Medium Carbon Steel - Synopsis
By I. Fedotov
One of the most effective methods of metal surface heat treatment is through laser hardening. In most cases, laser parameters are determined experimentally, which is expensive and time-consuming. A ma
Jan 1, 2011