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The structural design of large grinding mills, with reference to shell-mounted bearingsBy D. A. Fenton
The structural design of large grinding mills, with reference to shell-mounted bearings by D. A. FENTON*, P. Eng. (Visitor) The paper outlines the advantages of shell-mounted grinding mills over mills
Jan 9, 1976
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The treatment of ultrafine coal, especially by froth flotationBy Z. Zitron, G. J. de Korte, D. W. Horsfall
This paper summarizes work carried out on the treatment of fine coal, nominally classified as minus 0,5 mm (wedge-wire screen), which is removed from the raw coal prior to the treatment of the plus 0,
Jan 1, 1986
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Reichert cones for Witwatersrand gold oresBy R. Guest
Reichert cone concentrators are used successfully in many applications, but have as yet not found favour in the gold mining industry on the Witwatersrand, because, for optimum operation, the cones nee
Jan 1, 1982
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Inductive reactance, and the operation of large submerged-arc furnacesBy A. B. Stewart, I. J. Barker
Traditionally it has commonly been believed that the only problem with inductive reactance in a submerged-arc furnace is that it leads to difficulties with the electricity supply as a result of the Io
Jan 1, 1980
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Discussion: The mode of current transfer between electrode and slag in the submBerged-arc furnaceBy R. C. Urquhart, W. P. Channon, D. D. Howat
Discussion: The mode of current transfer between electrode and slag in the submBerged-arc furnace by w. P. CHANNON, R. C. URQUHART, and D. D. HOWAT J. MEINTJES I have read the paper with much interest
Jan 12, 1974
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Measurements of Percussive Rockdrill PerformanceMeasurements of the rates of penetration at various throttle air pressures are presented as a function of thrust for three different rockdrills when drilling quartzites with strengths of 45 000 lb/in2
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Suid-Afrikaanse Raad vir Professionele Ingenieurs Beleidsverklaring no. 1/31. OPLEIDING IN INGENIEURSWERK VIR IN G ENIEURS- IN -OPLEID IN G 1.1 llegistrasie as Ingenieur-in-opleiding 'n Gegradueerde ingenieur wat in 'n eksamen geslaag het wat die Raad erkenl, is re
Jan 1, 1979
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Bacterial Leaching: An Introduction to its Application and Theory and a Study on its Mechanism of OperationBy B. J. Ralph, I. J. Corrans, B. Harris
In the first section, a brief background to the practical and theoretical aspects of bacterial leaching is presented. Descriptions are given of present and potential methods for exploiting bacterial l
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A note on the simulation of seismic activity in the Klerksdorp areaBy R Kersten
The note describes an exercise on the simulation of the frequency and size of seismic events on the basis of the frequency distribution of the events and their inter-arrival times (Le. the frequency d
Jan 1, 1985
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The application of excess shear stress to the design of mine layoutsBy J. A. L. Napier
The application of excess shear stress as an aid to the design of mine layout is reviewed, and the critical parameters required to describe slip on a plane of weakness are noted. A design procedure th
Jan 1, 1987
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Technique and its applications of computer monitoring and control for safety mining production process of coal industry in ChinaBy F. Ma, F. Yang, T. Zhao, P. Dai, Z. Shao, D. Zuo
With the development of modern digital technique, computers have been widely used to monitor and control in retrofitting traditional industries. In Chinese coal industry, some analog monitoring and co
Jan 1, 2003
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Recent Developments At ZincorBy J P. van Dyk
The dramatic strengthening of the rand against the dollar as well as a decline in quantity and quality of locally available concentrates have had a dramatic impact on Zincor?s operations during the pr
Jan 1, 2005
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Guidelines for the derivation of reliable material balances from plant dataBy L. C. Woollacott
Some of the factors that may influence the reliability of a consistent material balance derived from plant data were investigated, data taken from a sampling of the Iow-grade tin-flotation circuit at
Jan 1, 1987
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A dynamic uranium-leaching model for process-control studiesBy I. J. Barker, D. A. Vetter, G. A. Turner
The modeling of the uranium-leaching process, and the logging of data from a plant for the evaluation of the model, are reported. A phenomenological approach was adopted in the development of the mode
Jan 1, 1989
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The effect of vanadium on the reversible temper-embritlement behaviour of low-alloy chromium and chromium-nickel steelsBy A. P. Van Wyk, G. Pirnaar
The effect of vanadium on the susceptibilities of chromium and chromium-nickel steels to reversible temper embritlement was evaluated. The steels investigated were approximately equivalent to steels o
Jan 1, 1987
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The Effect Of Changes In Barometric Pressure On Mines In The Highveld Of South AfricaBy R. Hemp
The first part of this paper describes the collection of barometric pressure measurements in a mine and their statistical analysis, which shows the effect of variations in barometric pressure, both on
Jan 1, 1994
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Phenomena relating to the failure of hard rock adjacent to an indentorIt is shown that, when a flat-bottomed indentor is pressed into the surface of a strong rock, the normal force necessary to cause failure of the rock is reduced substantially if a shear force is appli
Jan 1, 1978
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Petroscopic observations of rock fracturing ahead of stope faces in deep-level gold minesBy A. J. Jager, G. R. Adams
The pattern of mining-induced fractures ahead of stope faces in deep-level gold mines, as revealed by petroscopic observations, is described. It is shown that there are zones of fractured and unfractu
Jan 1, 1980
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The South African Mining Industry: An OverviewBy J. J. Geldenhuys
Premier of the North-West Province, Mr Molefe, foreign dignitaries and guests, ladies and gentlemen. It is a pleasure and also a special honour for me to have been invited here this morning to make
Jan 1, 1994
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Some practical considerations in the design and operation of a plant for the differential flotation of mixed sulphides, especially copper and zincBy P. Maais
This paper gives an account of the development of a plant for the differential flotation of mixed sulphide ore, special reference being made to the separation of copper and zinc sulphides. The uniquen
Jan 1, 1980