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The Mineral And Petroleum Resources Development Act Of 2002: A Paradigm Shift In Mineral Policy In South Africa
By F. T. Cawood
Inauguration of the new political dispensation in South Africa in1994 initiated a dynamic shift in the ownership, management and development of the country?s affluent mineral heritage. The process of
Jan 1, 2004
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Liquid-Liquid Extraction and Separation of Copper(II) and Nickel(II) Using LIX®984N
By N. B. Devi
The extraction of copper(II) from sulphate solution was investigated using LIX®984N in kerosene. The parameters that could affect the extraction, such as equilibrium pH, extractant concentration, salt
Jan 1, 2014
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Dealing with high-grade data in resource estimation
By O. Leuangthong, M. Nowak
"The impact of high-grade data on resource estimation has been a longstanding topic of interest in the mining industry. Concerns related to possible over-estimation of resources in such cases have led
Jan 1, 2015
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A Perspective Of Marine Mining Within De Beers
By K. Richardson
Although the De Beers group has a long history of placer mining on land, the group only became actively involved in deep water marine diamond exploration and mining in 1983 with the formation of DeBee
Jan 1, 2007
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Time-Dependent Tunnel Deformation At Hartebeestfontein Mine
By J. D. Bosman
The problems associated with squeezing rock conditions in tunnels are well known and have been extensively investigated in the past. Although squeezing conditions are predominantly found in tunnels de
Jan 1, 2000
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Review And Application Of Stope Support Design Criteria
Stope support systems, typically consisting of props and packs, are used extensively in the gold and platinum mining industry to stabilize the rock mass in the excavation vicinity and to reduce the ha
Jan 1, 2001
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Estimation of joint behaviour by monitoring and analysis in the rock cavern
By T. Maejima, K. Aoki, T. Mori, K. Iwano
Concerning the excavation of rock cavern, it is one of the most important issues to evaluate the behavior of rock joints. But few detailed measurements for joint behavior had been conducted. Therefor
Jan 1, 2003
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Determination Of Optimal Cut-Off Grade Policy To Optimize NPV Using A New Approach With Optimization Factor
By A. Bascetin
One very important aspect of mining is deciding what material in a deposit is worth mining and processing, versus what material should be considered waste. This decision is summarized by the cut-off g
Jan 1, 2007
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Design Principles for Optimizing an Established Survey Slope Monitoring System
By N. Mphathiwa
When slope angles are designed during open pit optimization, there is a risk factor applied in steepening the slopes. The steepening of slope angles has implications for the safety and economics of th
Jan 1, 2014
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Assessing risk in grade-tonnage curves in a complex copper deposit, northern Brazil, based on an efficient joint
By M. B. Fonseca
Risk quantification in grade-tonnage curves is critical for capital investment in mining projects and can be obtained through geostatistical simulations of orebodies. A practical difficulty may arise
Jan 1, 2003
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Microscopic Analyses of Bushveld Complex Rocks under the Influence of High Temperatures
By G. O. Oniyide, H. Yilmaz
The South African platinum mines in the Bushveld Complex (BC) have unique features that distinguish them from the gold mines. They have a higher horizontal stress closer to the surface, lower occurren
Jan 1, 2016
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Interaction of dust with the DC plasma arc - a computational modelling investigation (48774a53-c126-481b-8630-879d3aef53c9)
By Q. G. Reynolds
The presence of dust and fume suspended in the freeboard region is a common feature of the operation of direct current (DC) plasma smelting furnaces. This occurs primarily as a result of the use of fi
Jan 1, 2015
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Relationships between comminution energy and product size for a magnetite ore - Synopsis
An extensive laboratory grinding study was carried out on a magnetite ore in order to assess the grinding behaviour of magnetic concentrate and tail from low intensity magnetic separation (LIMS).The t
Jan 1, 2010
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Hydraulic mining of an in situ heavy mineral ore reserve
By M. Berger
The ‘Metallurgical Operations’ Department of Grinaker-LTA Process Engineering (GLTA) currently undertakes then primary mining as well as the re-deposition of tailings forTicor South Africa (Ticor) at
Jan 1, 2003
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Design Of A Modern Large Capacity FeNi Smelting Plant
By J. Kempken, R. Degel, J. Kunze, R. König
The FeNi technology is currently dominated by high-power submerged arc furnaces, often designed as smelter as "two-inline-solution". To achieve the intended high efficiency, state-of-the-art design in
Jan 1, 2007
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The Development Of A Remote-Controlled Highwall Rockbroom?A World First For The Open-Pit Mining Industry ? Synopsis
By D. van Rensburg
Jointed rock slopes are generally stable, as there is no freedom of movement for blocks of rock. In an open- pit mining environment, blasting opens up space into which blocks of rock can fail, resulti
Jan 1, 2012
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Risk Indexing Tool for Mine Planning
By W. Abdellah
The purpose of this paper is to establish a qualitative method to estimate the risk level (e.g. rating and ranking) resulting from mining activity. Risk is the product of two factors: probability of f
Jan 1, 2014
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What Is The Best Energy-Delivery System For Hand-Held Stope Drilling And Associated Equipment In Narrow-Reef Hard Rock Mines? ? Synopsis
By P. J. Petit
Changing mining conditions, legislative issues, rising costs, and the constrained supply of skills and electricity in South Africa, have been some of the criteria forcing mine operators and engineers
Jan 1, 2013
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Spinel Removal From PGM Smelting Furnaces
By A. R. Barnes, A. F. Newall
Keywords: Pyrometallurgy, furnace, smelting, spinel, PGM, phase diagrams As Merensky reef ores are replaced by UG2 ores, chromium levels in PGM smelting furnace feeds have steadily increased. Inc
Jan 1, 2006
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Foreword (134b8950-7dbc-4a9d-ad1c-39bdc8a1a198)
Pyrometallurgy has played a very important role in southern Africa for at least four centuries. It continues to do so, and recent years have seen many exciting developments in pyrometallurgical techn
Jan 1, 2006