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Physical Modeling of Three-Phase Mixing in a Counter-Current Reaction Launder (CCRL) Process for Metal Refining
By Lloyd R. Nelson
Experimental results of three-phase mixing in a physical model of a CCRL for metals refining are presented. The system was operated above a critical lower liquid height-to- width ratio (H,/W) of unity
Jan 1, 1995
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Hydrometallurgical Process for the Recovery of Lead from a Mixed Lead-Zinc Sulfide Concentrate
By C. J. Beyke
The U.S. Bureau of Mines has developed a process for the selective recovery of Pb metal from a mixed Pb-Zn concentrate. The concentrate was leached in recycled H2SiF6 at atmospheric pressure and 95° C
Jan 1, 1991
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Contribution to the Strategic Analysis of Alternatives for Waste Management in Valle De Aburrá Area, Medellín-Colombia
By Enrique Posada
"The Valle de Aburrá area, corresponds to the city of Medellín and neighboring municipalities, with more than 3 million people. The area generates a sizable amount of solid waste, which has been taken
Jan 1, 2008
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The First Commercial-Scale QSL - Plant - Results of the Commissioning
By Manfred Schmidt
Realizing an invention of Professors Queneau and Schuhmann, Lurgi GmbH has developed a radically new lead smelting technology, which was demonstrated on a ?30,000 tpy scale at Berzelius Metallhiltten
Jan 1, 1990
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Electric Arc Furnace Steel Slags In ?High Performance? Asphalt Mixes: A Laboratory Characterisation
By Marco Pasetto
The possibility to re-use marginal materials (by-products) deriving from industrial activities in the construction of road infrastructures, as total or partial substitution of natural aggregates, succ
Jan 1, 2006
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Projecting Laboratory and Test Data into Operating Reality
By R. R. Beebe
"Laboratory and pilot-scale tests are almost invariably required before metallurgical development can proceed. Difficulties with sampling, as well as with classical chemical and physical scaleups, are
Jan 1, 1997
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The Smelting of Copper-Nickel Concentrates in an Electric Furnace
By Roger C. Urquhart
Copper-nickel-sulphide ores mined in the Rustenburg district of South Africa are generally smelted in electric furnaces because of the high-temperature slag produced, the availability of cheap electri
Jan 1, 1976
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Application Of Mechanical Alloying Processing To The Formation Of Copper-Carbide Alloys
By V. Vergara
Four copper composites were obtained by mechanical alloying, using as dispersed phases of four carbide powders; they were: boron carbide, chromium carbide, silicon carbide and zirconium carbide. The p
Jan 1, 1999
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High-Pressure Behavior Of f-Element Materials
By R. G. Haire
Studies of the f-elements under pressure provide important insights into their solid state chemistry and physics. From such studies, of the elements and their alloys, it has been established that the
Jan 1, 1992
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The Safe Disposal Of Toxic Elements In Slags
Four slag types covering the range of Fe-Ca-Si-O compositions and two iron blast furnace slags were melted at 1300 °C and doped with 1% of arsenic, antimony, cadmium, zinc and chromium. The melts were
Jan 1, 1994
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Application Of A Reacting CFD Model To Drop Tube Kinetics And Flash Smelter Combustion
By B. R. Adams
This paper discusses the use of a reacting CFD model to determine chalcopyrite kinetics in a drop tube furnace and to predict the reaction of a chalcopyrite concentrate in the reaction shaft of an ind
Jan 1, 1999
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Electrolytic Copper Refining - 1999 World Tankhouse Operating Data
By W. G. Davenport
A survey of world copper refining tankhouse .practices has been carried out. This paper compiles the results and examines changes in operating practices .since the similar 1987, 1991 and 1995 surveys.
Jan 1, 1999
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Bath Smelting In The Noranda Process Reactor And The El Teniente Converter Compared
By Cameron Hams
Noranda's Process Reactor and Codelco's Teniente Converter are physically similar vessels, which leads to the commonly held misconception that the two processes are the .same. However, notab
Jan 1, 1999
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Inducarb - A New Reducing Facility For Various Oxidic Melts - Introduction
By Antrekowitsch Jürgen
The recycling of residues from metal producing by-products has become a main field of interest in metallurgical investigations. Forced by a stricter environmental legislation and the resulting increas
Jan 1, 2006
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Development Of SRB Treatment Systems For Acid Mine Drainage
By Suzzann Nordwick
Over the past decade, significant advances have been made in the development of sulfate-reducing bacteria (SRB) technology to treat acid mine drainage (AMD). Bench-scale testing, field demonstrations,
Jan 1, 2003
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Recovery Of Some Metallic Compounds From The Fly Ashes Of Some Egyptian Power Stations
By S. S. Ibrahim
The left behind material after the combusion of fossel fuel in some power stations in Cairo; weighing tens of tons every years, was investigated. The material called "Fly Ashes" containing 7.5% Ni, 10
Jan 1, 1995
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Effect of Electrode Surface Modification on Dendritic Deposition of Aluminum on Cu Substrate Using Emic-Alcl3 Ionic Liquid Electrolytes
By D. Pradhan, R. G. Reddy
"Electrorefining of aluminum scrap was investigated from AlCl3 –1-Ethyl-3-methyl-imidazolium chloride (EMIC) (Molar ratio 1.65) chloroaluminate electrolyte using copper cathodes at temperature of 90±3
Jan 1, 2009
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Simulation of Combustion and Metal Heating in a Mobile Heat Treatment Furnace
"In this paper, a mobile heat treatment furnace from Akkermans Gloeitechniek, a Dutch company, was simulated with Computational Fluid Dynamics (CFD). The furnace is cylindrical with four oil burners,
Jan 1, 2004
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Development Of Extractants To Transport Metal Salts In Base Metal Recovery Processes.
By S. G. Galbraith
We have used the principles of supramolecular chemistry to develop reagents to transport metal salts. These reagents have separated charged "compartments" which recognize a metal cation and its attend
Jan 1, 2003
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High-Efficiency Reactors For Obtaining Metal Powders
By T. Lezhava
A new reactor model with rotating cathodes has been developed where various forms (dendrite, spongy) of metal depositions and their uninterrupted removal are accomplished by the realization of high cu
Jan 1, 2006