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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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