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Microstructure Characterization Of Laser-Deposited Titanium Carbide And Zirconium-Based Titanium Metal Matrix Composites ? Synopsis
By O. F. Ochonogor
Laser metal deposition (LMD) is an additive manufacturing technique whereby a stream of metal powder is consolidated by a focused laser beam on the surface of a substrate or engineering component. The
Jan 1, 2012
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The Corrosion Behaviour Of A Low Carbon Steel In Natural And Synthetic Seawaters
The corrosion behaviour of a low carbon steel was investigated in natural seawater and various synthetic seawaters. It was found that the steel corroded nearly four times faster in a 3.5% NaCl solutio
Jan 1, 2006
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Witwatersrand Gold Reef Evaluation: The ?Variancegram? Tool
By C. Lemmer
The resolution with which the different categories of resources are forecast for Witwatersrand gold reefs should ideally tie in with block sizes that are optimal in terms of the variability structures
Jan 1, 2014
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Split Shell Open Pit Design Concept Applied At De Beers Venetia Mine South Africa Using The Whittle And Gemcom Software
In today?s high tech world, systems are getting bigger, faster, better. To remain at the leading edge, in any business, depends on accurate but flexible design thereby allowing operational managers
Jan 1, 2001
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Voidfill material strength behaviour and underground application
By S. Z. Pethö, H. Yilmaz
South Deep Mine is currently undertaking numerous voidfilling projects using low strength aerated cement products. Representative samples from one such site, were taken and tested for the load deforma
Jan 1, 2003
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Concentration Profiles Of Gold Inside Activated Carbon During Adsorption
The gold concentration profiles which develop inside the activated carbon particles during the adsorption process were measured, so as to obtain additional direct proof of intra-particle mass transfer
Jan 1, 1997
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Factors Affecting Silicomanganese Production Using Manganese Rich Slag In The Charge
By A. Ahmed, A. Fathy, M. Eissa, K. El-Fawakhry, A. El-Mohammady
Silicomanganese is widely used as a complex reducer and an alloying addition in the production of various grades of steel due to its economic and metallurgical advantages. It is also used as a semi-pr
Jan 1, 2004
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Probabilistic Mine Design Methods To Reduce Rockburst Risk
By F. M. C. C. Vieira
There are many uncertainties that a mine designer should consider when selecting an optimal layout. Even though the inherent variability in the design parameters indicates that single-values are not r
Jan 1, 2002
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Impact of deep-hole opencast blasting on the stability of water dams of a close-by underground coal mine ? Synopsis
By C. Sawmliana
Deep-hole blasting operations in opencast mines are always associated with some annoyance to the surrounding areas in terms of ground vibration, noise, flyrock, etc. These become more severe when unde
Jan 1, 2009
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Electrometallurgical Relationships In Electric Smelting Furnaces
By J. Persson, N. G. Bliss
Electric furnaces used for smelting and those used for scrap melting exhibit different performance profiles in terms of electrical characteristics. However, the underlying principles are the same f
Jan 1, 2004
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Fundamental Analysis Of The Interaction Between Overburden Behaviour And Snook Stability In Coalmines
By J. N. Van der Merwe
In the process of pillar extraction, pillars are seldom if ever extracted completely. The pillar remnants, or snooks, play an important role in the extraction process. At the working face, they need t
Jan 1, 2005
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A Theoretical Approach to the Sublimation Separation of Zirconium and Hafnium in the Tetrafluoride Form
By H. F. Niemand, C. J. Postma, P. L. Crouse
"SynopsisThe separation of zirconium and hafnium is essential in the nuclear industry, since zirconium alloys for this application require hafnium concentrations of less than 100 ppm. The separation i
Jan 1, 2015
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Feasibility Study On Underground Coal Gasification Of No. 15 Seam In Fenghuangshan Mine ? Synopsis
By W. G. Huang
To recover the coal resources of high-sulphur anthracite in Jincheng Mining Area, underground coal gasification (UCG) of No. 15 seam in Fenghuangshan Coal Mine was proposed. The feasibility of the pro
Jan 1, 2012
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The Transformation Of Ferrochromium Smelting Technologies During The Last Decades (3844a56b-bacc-4d72-9cf3-15ee7bf5e6c1)
By J. Daavittila
In the latter part of the 1980s Outokumpu Chrome in Tornio, Finland, was in a situation when its twenty-year-old ferrochrome plant was becoming too inefficient to sustain economically sound production
Jan 1, 2004
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An Environmental Management Framework For Tanzania
The Mineral Sector Development Project, sponsored by the World Bank, has been set up to revise the legal, regulatory and fiscal framework for the minerals industry in Tanzania, with a view to attracti
Jan 1, 1998
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A Case Study Of High-Temperature Corrosion In Rotary Cement Kilns
By J. H. Potgieter
This paper describes two cases of corrosion that occurred in dry-process, rotary, cement-clinker kilns. In the case of the kiln with five pre-heater stages, the attack occurred primarily from sulphate
Jan 1, 2004
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Re-aligning the cutting sequence with general support work and drafting a support sequence at Simunye Shaft
By K. Lombard
"‘Roof support awaiting time’ (RSAT) is a term used at Goedehoop Colliery’s Simunye Shaft to describe the potential production time lost due to the continuous miner (CM) standing idle waiting for roof
Jan 1, 2015
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Longwalling At Great Depth In A Geologically Disturbed Environment - The Way Forward
By F. Russo-Bello
TauTona Mine (the renamed Western Deep Levels East) is using a longwall mining method with stability pillars to extract the Carbon Leader Reef at a depth ranging from 2097 metres to 3456 metres below
Jan 1, 2000
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A Lining Management System For Submerged Arc Furnaces
By Wayne Burmeister, Danie Benade, Louis Meyer, Hugo Joubert
What is not measured cannot be managed. This is true of most things, including a furnace lining. This paper describes a Lining Management System used for this purpose. It provides the operations st
Jan 1, 2007
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Microstructure And Corrosion Properties Of Al(Ni/Tib2) Intermetallic Matrix Composite Coatings - Synopsis
By A. P. I. Popoola
Laser coatings are used for a wide variety of applications. TiB2/Ni intermetallic matrix composite coatings were fabricated on Al-substrate by a high power Rofin Sinar Nd: YAG solid-state laser. The c
Jan 1, 2011