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  • SME
    Cathodic Protection To Minimize Corrosive Wear In Ball Mills

    By G. T. Adel, P. E. Richardson, R. Pazhianur

    Cathodic protection using impressed current was employed to reduce mill wall wear during ball milling. Wear rates were determined from weight-loss measurements made on four 1-in.-diam mild steel coupo

    Jan 1, 1998

  • AUSIMM
    New Backfill Binder and Method

    By M Grossi, G Baiden

    This paper describes a new mine backfill method based on a newly invented binder with several years of test results from laboratory and onsite applications. The new binder has several advantages over

    Jan 1, 1998

  • SME
    Identification And Characterization Of Amorphous Silica

    By William J. Miles

    The inhalation of dust has been a problem in the mining industry since antiquity. Crystalline silica is now known to be the cause of silicosis, a form of pneumoconiosis that is associated with excessi

    Jan 1, 1998

  • SME
    Upgrading Flue-Gas Scrubber Sludge By Froth Flotation, Using Octadecylamine/Octadecylguanidine Collector

    By K. J. Shoop

    Coal-fired power plants in the U. S. produce approximately 20 million metric tons of Hue-gas desulfurization sludge every year. The sludge mainly consists of calcium sulfite and calcium sulfate. This

    Jan 1, 1998

  • AUSIMM
    Mineralogy of Sulphide Scale Deposited in Geothermal Pipelines, Ohaaki, New Zealand

    By K L. Brown, J L. Mauk

    Sulfide-rich scale occurs in steam and water lines at the Ohaaki geothennal field,Taupo Volcanic Zone, New Zealand. Precious metals show very high concentrations around areas ofpressure reduction (Au

    Jan 1, 1998

  • SME
    Commodity Prices From A Monetary Perspective

    By G. Pierson

    Explanations for commodity price levels (or movements) commonly focus on the fundamentals of supply and demand otherwise they are simply assigned to speculative activity. Comparisons of metal-price hi

    Jan 1, 1998

  • SME
    Acidic Medium Flotation Separation Of Chromite From Olivine And Serpentine

    By L. Piga, G. Belardi, V. Alesse, N. Shehu, J. Freund

    The physico-chemical interactions among minerals such as olivine, chromite and serpentine; the most commonly present ions in solution such as Ca and Mg; and flotation reagents such as EDTA and oleic a

    Jan 1, 1998

  • SME-ICGCM
    A Case Study of Bolt Performance in a Two-entry Gateroad

    By Stephen P. Signer

    This paper presents the results of a case study conducted in a two-entry gateroad in a coal mine where excessive roof deformation and bolt loading resulted in failure of many roof supports. The instru

    Jan 1, 1998

  • ISEE
    Analysis of, Mining Explosion Performance with Multiple Sensor Data and Physical Models

    By Robert Martin, Brian W. Stump, David P. Anderson

    2We use field measurements to quantify physical processes that accompany different types of mining explosions. The data sets collected include three-component ground motion, acoustic, video and high s

    Jan 1, 1998

  • SME
    Dust Formation In Flash Oxidation Of Copper Matte Particles

    By J. T. YIi-Penttiia

    Dust formation and reaction mechanisms of copper matte particles were investigated in simulated flash oxidation conditions. The granulated and ground matte consisted of 72 wt% Cu, 4 wt% Fe and 21 wt%

    Jan 1, 1998

  • AUSIMM
    Deep Paste Thickening Systems (Brisbane, 14 - 16 April1998)

    By Laros T, Schoenbrunn F

    Deep paste thickeners have been proven capable of consistently producing medium to low slump material for disposal without the need for filters. However, proper design of the entire system is critic

    Jan 1, 1998

  • SME
    Determination Of Transition Depth Between Slope And Box-Cut Access For Near-Surface Coal Reserves (PRIPRINT 98-181)

    By B. K. Slone

    The depth at which it becomes more economical to use slope access as opposed to box-cut access for near-surface coal reserves, termed "transition depth," can be established for a given coal property b

    Jan 1, 1998

  • SME
    Adding A Third Main Fan At The Waste Isolation Pilot Plant (1998)

    The Waste Isolation Pilot Plant (WIPP) is adding a third fan to operate in parallel with, and supplement, its two existing main fans. An engineering analysis conducted in 1995 identified the need for

    Jan 1, 1998

  • SME
    MIXING OPTIMIZATION OF HIGH PRESSURE OXIDATION OF GOLD ORE SLURRIES

    By Dan Adams, Thomas Post, Paul Kubera, Mike Preston

    Mixing is a common unit operation in the mining industry. Mixers are often used in agitated leach, bio-oxidation, and pressure oxidation. In all of these cases it is important to understand the applic

    Jan 1, 1998

  • SME
    INTEGRATION OF RE AL-TIME SURVEY, MINE PLANNING SOFlWARE, GIS & MACHINE CONTROL GPS FOR MINING OPERATIONS MANAGEMENT

    By Barry A. Hillman

    The rapid evolution of computer and field sensor technology is now providing the ability to integrate mine and office opera­tions. Digital maps and mine plans as well as CAD and GIS can be transferred

    Jan 1, 1998

  • SME
    A FUNDAMENTAL EVALUATION OF THE DuPONT ACTIVATOR TECHNOLOGY

    By Milton E. Wadsworth, Jeffrey S. Thompson

    The effect of an activator on gold dissolution in clear solution is examined using a rotating disk gold electrode. Steady state polarization curves for anodic dissolution of gold and cathodic reductio

    Jan 1, 1998

  • SME
    How TO REDUCE CAPITAL AND OPERATING COSTS AT HEAP LEACHING PROJECTS

    By Leonard Harris

    Good morning ladies and gentlemen. I would like to thank Hans von Michaelis for inviting me here today to talk to you on the subject of "How to Reduce Capital and Operating Costs at Heap Leaching Proj

    Jan 1, 1998

  • SME
    THE HW EMSTM COPPER-GOLD METHOD (Engineered Membrane Separation)

    By John A. Lombardi

    The HW Process Technologies Engineered Membrane Separation (EMS"') technology is a patented system for the removal of multivalent base metal cyanide complexes from cyanide process streams, and EMSni p

    Jan 1, 1998

  • SME
    CYANIDE RECOVERY BY THE SART PROCESS FOR THE Loso-MARTE PROJECT, CHILE

    By C. A. Fleming, K. W. Sarbutt, P. K. MacPhail

    The SART process has been developed for Teck to treat bar­ren solution from the cyanidation/CIP process that has been developed for the Lobo-Marte project in Chile. The objective of the process is to

    Jan 1, 1998

  • SME
    NOVEL ASPECTS OF HEAP LEACIIlNG AT COEUR ROCHESTER

    By Larry D. Hartzog

    For detailed information you are referred to "Heap Leach Solution Application at Rochester" by S. N. Dixon and A. L. Wilder which will be presented at the SME Meeting in Phoenix, January 1988.

    Jan 1, 1998