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  • SAIMM
    The structural design of large grinding mills, with reference to shell-mounted bearings

    By 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

  • SAIMM
    The treatment of ultrafine coal, especially by froth flotation

    By 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

  • SAIMM
    Reichert cones for Witwatersrand gold ores

    By 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

  • SAIMM
    Inductive reactance, and the operation of large submerged-arc furnaces

    By 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

  • SAIMM
    Discussion: The mode of current transfer between electrode and slag in the submBerged-arc furnace

    By 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

  • SAIMM
    Measurements of Percussive Rockdrill Performance

    Measurements 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

  • SAIMM
    Suid-Afrikaanse Raad vir Professionele Ingenieurs Beleidsverklaring no. 1/3

    1. 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

  • SAIMM
    Bacterial Leaching: An Introduction to its Application and Theory and a Study on its Mechanism of Operation

    By 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

  • SAIMM
    A note on the simulation of seismic activity in the Klerksdorp area

    By 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

  • SAIMM
    The application of excess shear stress to the design of mine layouts

    By 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

  • SAIMM
    Technique and its applications of computer monitoring and control for safety mining production process of coal industry in China

    By 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

  • SAIMM
    Recent Developments At Zincor

    By 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

  • SAIMM
    Guidelines for the derivation of reliable material balances from plant data

    By 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

  • SAIMM
    A dynamic uranium-leaching model for process-control studies

    By 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

  • SAIMM
    The effect of vanadium on the reversible temper-embritlement behaviour of low-alloy chromium and chromium-nickel steels

    By 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

  • SAIMM
    The Effect Of Changes In Barometric Pressure On Mines In The Highveld Of South Africa

    By 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

  • SAIMM
    Phenomena relating to the failure of hard rock adjacent to an indentor

    It 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

  • SAIMM
    Petroscopic observations of rock fracturing ahead of stope faces in deep-level gold mines

    By 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

  • SAIMM
    The South African Mining Industry: An Overview

    By 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

  • SAIMM
    Some practical considerations in the design and operation of a plant for the differential flotation of mixed sulphides, especially copper and zinc

    By 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