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Retention of Small Grinding Media inside Ball Mills
By Jocelyn Bouchard, Claude Bazin, Sami Makni, Rolando Quispe
"Finely disseminated minerals in ores require intensive size reduction to achieve sufficient liberation for the subsequent concentration process. The use of small grinding media in conventional ball m
Jan 1, 2015
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Some Notes on the Geology of Stannary Hills, North Queensland
THE following notes were accumulated during the years 1905 to 1911, when the writer was employed at Stannary Hills. The writer's duty took him over the underground workings daily. In odd moments
Jan 1, 1918
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Effects Of Joint Persistence On Jointed Rock Masses
By W. G. Pariseau
Equivalent elastic properties of discontinuously jointed rock masses are computed using a non-representative volume element(NRVE) approach within a three dimensional finite element program. Joint pers
Jan 1, 2003
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Thermodynamics Applied To Ferro-Alloys Smelting
By F. Bonnet, J. Lehmann, H. Gaye
A review of thermodynamic information and models of slags, including associated software when available, is presented. The pertinence and accuracy of these models is discussed by comparison of their p
Jan 1, 2004
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Red Lake Gold Mine Autoclave Optimization Project
By K. K. Murray, D. G. Gelderland
"The pressure oxidation autoclave at the Goldcorp’s Red Lake Gold Mines (RLGM) was commissioned in 1991. Since commissioning, the circuit has been well maintained and its capacity increased to mechani
Jan 1, 2017
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Grinding Circuit Improvements at Barrick Goldstrike’s Roaster Facility
By Jim Wickens, Andy Cole, John Pekrul
"The roaster facility at Barrick Goldstrike Mine treats double-refractory sulfidic/carbonaceous gold ore. Prior to oxidation in the roasters, the ore is ground in two parallel dry grinding circuits ut
Jan 1, 2003
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Gotthard-Base Tunnel, Section Faido Previous Experience With The Use Of The TBM
By Martin Herrenknecht
After the successful breakthrough at the end of 2006 of both TBMs into the multifunctional site Faido (MFS), in the middle of 2007 the two tunnel boring machines resumed the 12 km long section between
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The Price Is Right?Planning Large Water Tunnel Contracts In New York
By Christian Maguire
Tunnel contracts in New York have in recent years had few bidders with the bids received being much higher than anticipated. Since 9/11, security has become a key issue in planning key infrastructure
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An Overview of Optimizing Strategies for Flotation Banks
By M. Maldonado, J. A. Finch
"A flotation bank consists of a serial arrangement of cells. How to optimally operate a bank remains a challenge. This article reviews three strategies for optimizing bank performance: air profiling,
Jan 1, 2012
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A New Process For The Thermal Refining Of Zinc: A Case Study Of Technology Development At Mintek
By A. McKenzie
During the late 1990s Anglo American PLC was evaluating the Gamsberg zinc deposit in the Northern Cape Province. As the primary South African metallurgical technology provider, Mintek became involved
Jan 1, 2004
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New Opportunities - Exhaustive Monitored Copper Coolers For Submerged Arc Furnaces
By M. Hopf, E. Rossouw
Keywords: Pyrometallurgy, furnace, copper coolers, freeze lining, monitoring, Saveway The use of water-cooled copper components as sidewall elements of submerged arc furnaces and other pyrometallu
Jan 1, 2006
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The Experimental Study on Gas Detonating System by New-Type of Gas Source
By Chen Jianping, Wu Li, Wei Banyun, Chen Canchang
Liquified petroleum gas mixed with oxygen has been used as a new type of mixed gas source for gas detonating system. The experimental studies have been done on the detonation feature of gas detonating
Jan 1, 1999
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Plutonium Pyrochemistry Spent Salts Treatment By Oxidation And Distillation
By Christophe Thiébaut
Keywords: Pyrochemistry, Salts Treatment, Distillation The pyrochemical purification of metal generates spent salts. When this metal is an actinide such as plutonium, the slags cannot be discarded
Jan 1, 2005
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RI 2585 Mining Limestone For Lime Manufacture
By Oliver Bowles
"Underground operation.In its broader sense the term ""mining"" is applied to all processes whereby raw materials are taken from the earth to be used as sources of mineral products. In a more restrict
Mar 1, 1924
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Quarry Blasting Management in Urban and Suburban Environment
By Alain Blanchier, Gilles Gomez
Neighborhood pressure on quarries has become urgent to deal with quarry managers and operators must apply the most recent technologies and communicate it for long shelf life time exploitation, the qua
Jan 1, 2009
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OFR-3-79 Study Of Noise Sources In A Cross Section Of Taconite Plants
Four taconite plants were studied to establish the extent of hazard to plant personnel which exists based on long-term exposure to noise. The criteria for evaluation include the 90 dBA and 85 dBA summ
Jan 1, 1977
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Large Flotation Cells In The Copper Processing Industry ? Recent Experiences And Future Considerations (Part 1)
By D. Govender
In recent years, economies of scale have continued to drive copper projects to larger throughputs to offset depleting lower grade resources. A decade ago there were only a small number of projects tha
Feb 27, 2013
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Economic Recovery and Upgrade of Metals from Middling and Tailing Streams (c573bdd5-90fc-4072-9ce3-2caa48051cb4)
"As mine head grades decline and orebodies become more complex, traditional mineral processing techniques and flowsheets to achieve saleable concentrate become more difficult to design and construct.
Jan 1, 2017
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Quake, Quarry, or Quack
By Dominic Orf, Gregory Poole
On December 12, 2018 at 4:14 AM EST, an earthquake registering a 4.4 magnitude on the Richter Scale occurred in central Tennessee. According to a survey posted on the USGS website, this earthquake was
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RI 6767 Sampling And Coking Studies Of Coal From The Kukpowruk River Area, Arctic Northwestern Alaska
By Robert S. Warfield
Eight samples of high-volatile bituminous coal, each large enough for a study of its coking properties by the Bureau of Mines, were obtained from a location along the Kukpowruk River, Arctic Northwest
Jan 1, 1966