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Review of U and Th analysis—standards and methodsBy J. D. de V. Louw
Introduction Zircon is a natural occurring mineral and may exhibit natural low level radioactivity. It contains trace levels (90 to120 pCi/g and 110 to 115 pCi/g respectively or 3.3 to 4.4Bq/g and
Jan 1, 2003
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Ferrochrome Smelting And Smelting Capacity Investment In ZimbabweBy J. Chirasha
Keywords: Pyrometallurgy, ferrochrome, smelting, investment, Zimbabwe Four smelting plants currently make up the ferrochrome smelting capacity in Zimbabwe. Zimbabwe Alloys and Zimasco represent m
Jan 1, 2011
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Experimental Backfilling At Harmony Gold MineBy M. Faure
The experiment with backfill at Harmony was mainly an attempt to improve the ground conditions in a particularly tricky section of the mine. A deslimed tailings system was selected for financial reaso
Jan 1, 1988
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Condition based maintenance for mineral processing: Comparison of the remaining useful life predictions for pumps using adaptive auto-regressive and gamma process models, A.V. Cherkaev, S.M. Bradshaw, T.M. Louw, L. Auret, and D.V.J.W. GroenewaldBy D. V. J. W. Groenewald, T. M. Louw, L. Auret, S. M. Bradshaw, A. V. Cherkaev
Unexpected equipment failures lead to financial losses due to production disruption. Time-based maintenance, based on checks over regular time periods, has been employed to minimise disruption. Howeve
Jan 1, 2020
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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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South African Coal Pillar DatabaseBy J. N. Van der Merwe
The research described in the paper was aimed at providing standardized information of cases of failed and intact coal pillars in the form of databases to researchers. It also offered the opportunity
Jan 1, 2006
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Positive Risk Management: Hidden Wealth in Surface MiningBy J. A. Luckmann
"SynopsisThe purpose of this paper is to introduce an innovative approach to risk management in surface mining operations, namely, positive risk. Traditionally, risk management focused on mitigating l
Jan 1, 2015
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Separation and recovery of cobalt and aluminium from spent gas-to-liquid catalysts using CYANEX® 272By D. van der Westhuizen, H. Krieg, M. Kruger
In the field of Fischer-Tropsch synthesis catalysts, cobalt, platinum, and aluminium are the primary metal constituents of the conventionally used cobalt catalyst. While platinum recovery remains a fo
May 27, 2025
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Method for producing fine silicon dioxide and a collective concentrate of rare-earth metals from phosphoric slags, Ye.G. Bochevskaya, A.S. Sharipova, Z.B. Karshigina, and Z.S. AbishevaBy and Z. S. Abisheva, Z. B. Karshigina, Ye. G. Bochevskay, A. S. Sharipova
The production of precipitated silica in the United States is about 145,000 tons of SiO2 and its prices vary significantly (from $ 1 to $ 4.5 per kg) depending on the area of its application. One of t
Jan 1, 2020
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Improvements in stope drilling and blasting for deep gold minesBy N. G. Cook, N. C. Joughin, A. J. A. White
The rate of face advance in the gold mines is between 3 and 10 m a month, with a median value of about 5 m a month; it follows that faces are blasted less frequently than is planned. There are many ad
Jan 1, 1975
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Explosives utilization at aWitwatersrand gold mineBy M. Gaula
"Gold bearing deposits of the Witwatersrand basin are generally less than 2m thick and require conventional narrow-reef mining methods for extraction and employ explosives as a means of rock breaking.
Jan 1, 2015
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Effects of flotation operational parameters on froth stability and froth recoveryBy 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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Quantitative Evaluation Of Fill Performance In South African Gold MinesBy N. C. Gay
The quantitative evaluation of the performance of fill materials placed in gold mine stopes is achieved by (i) measurement of the in-situ load- displacement, or stress-strain, characteristics of the m
Jan 1, 1988
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Overview Of Modeling The Microstructural State Of Steel Strip During Hot RollingBy I. V. Samarasekera, E. B. Hawbolt
A review of recent work being conducted at the university of British Columbia on the modeling of the microstructural evolution during the hot rolling of steel is presented. A mathematical model of h
Jan 1, 1995
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Predicting the probability of Iron-Rich Ultramafic Pegmatite (IRUP) in the Merensky Reef at Lonmin’s Karee MineBy D. Hoffmann, S. Plumb
IRUP is an iron-rich ultramafic pegmatite rock that formed due to hot ironrich fluids and gases replacing local stratigraphic zones of the Bushveld Complex. This study focuses on the estimation of the
Jan 1, 2015
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The Development Of A Jet Reactor For The Leaching Of Valuable MetalsBy B. M. Loftus
An investigation into the use of impinging stream (jet) reactors for the leaching of a free milling ore produced an increase in gold recovery by 10% while decreasing leaching time by up to 90%.Tests o
Jan 1, 1997
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Presidential Address - The South African Coal Industry: Current Position And Future ChallengesBy R. P. Mohring
The South African Coal Industry had its beginnings in the Eastern Cape in 1859 when coal was mined to satisfy the fledgling settlements in the Eastern Cape. The growth in the industry was relatively
Jan 1, 1997
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Some problems in estimation of the optimum exploitation life of bucket wheel excavatorsBy 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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A Critical Evaluation Of The Installation Equipment Of In-Stope Rock Bolts And The Effectiveness Thereof In The Merensky Stoping AreasBy G. M. J. van Heerden
Paper written on project work carried out in partial fulfilment of B. Eng (Mining Engineering) degree The Union Section of Anglo Platinum is situated ±18 km west of the town of Northam on the north
Jan 1, 2002
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The use of Information Technology in the Mineral Resource Management environmentBy J. van Zyl Visser
The advancement in Information Technology has resulted in a change in workflow practice in our Mineral Resource Management (MRM) offices on the mines and at our corporate office. This paper discusses
Jan 1, 2003