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A Direct Reduction Zinc Process
By Lamar S. Todd
The direct production of metal from a sphalerite concentrate is an attractive route for primary zinc. A series of operations and conditions have been selected to efficiently cause the following overal
Jan 1, 1999
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Trace Element Analysis of Precious Metals in Minerals by Time-of-Flight Resonance Ionization Mass Spectrometry (TOF-RIMS)
By Stephen Chryssoulis, Stamen Dimov
Detection and quantification of precious metals (Au, Pd, Pt, and Rh) in spinels and silicate minerals is important for establishing the maximum attainable recovery by sulphide flotation. To achieve th
Jan 1, 1999
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Development Of Countercurrent Solvent Extraction Processes For Treatment Of Highly Radioactive. Waste Streams? Using Centrifugal Contactors
By J. D. Law
The presence of long-lived radionuclides presents a challenge to the management of radioactive wastes. Separation of the radionuclides from the waste solutions has the potential of significantly decre
Jan 1, 1999
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Atmospheric-Pressure Plasma Process And Applications
By Peter Kong
This paper provides a general discussion of atmospheric-pressure plasma generation, processes, and applications. There are two distinct categories of atmospheric-pressure plasmas: thermal and nontherm
Jan 1, 2006
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Zinc-A Possible Component In Lead-Free Solders (Keynote) (eeb8536d-aa40-42f4-a0cf-853c0a6fdb6d)
By Mikula Adolf
Lead-tin solders are commonly used in electronic packaging due to their unique combination of electrical, chemical, physical, thermal and mechanical properties. Since it is known that lead and lead co
Jan 1, 2003
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Zinc-A Possible Component In Lead-Free Solders (Keynote)
By Adolf Mikula
Lead-tin solders are commonly used in electronic packaging due to their unique combination of electrical, chemical, physical, thermal and mechanical properties. Since it is known that lead and lead co
Jan 1, 2003
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Melt Atomisation The Bridge From Pyro? To Hydro-Metallurgy
By John J. Dunkley
Recent years have seen the increased use of hydrometallurgy in the smelting and refining of metals. However this is often used as a final refining step, following an initial pyrometallurgical smelting
Jan 1, 2003
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Brief Overview Of The Baia Mare Dam Breach
By Frederick W. DeVries
The author was invited by "60 Minutes Australia" to provide on-site technical background on cyanide, mining, and the environment, in their investigation of the January 30, 2000, spill at the Aurul go
Jan 1, 1998
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Ion Interaction Models for Co, Ni, Cu, Zn and Fe
By KNona C. Liddell
The ion interaction model Pitzer proposed twenty years ago is today the most widely used method for calculation of osmotic coefficients and electrolyte and single ion activity coefficients in aqueous
Jan 1, 1993
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Overall Reaction Kinetics Of Coal Injection Into Slags (Invited)
By F. -Z. Ji
Carbon injection into metallurgical slag is important in electric arc furnace (EAF) steelmaking for foamy slag practices and in nonferrous slag cleaning operations. The current publication presents ki
Jan 1, 2003
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An approach for scaling arsenic removal from smelter gases using iron oxides
By Balladares V. Eduardo
Most of the arsenic contained in copper concentrates is removed in the gas phase during the smelting and converting processes and, according to recent environmental regulations, it is required to fix
Jan 1, 2005
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Thermal Study and Metallographic Characterization of Zn-20%Ai and Zn-20%Ai-Io%Si-3%Cu Alloys Directionally Solidified
By Alicia Esther Ares
This study was conducted to investigate the directional solidification of Zn-20%A1 and Zn20% A1-1O%Si-3o/oCu alloys under different conditions of heat transfer at the metal/mould interface. The type o
Jan 1, 2008
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Kinetics of Oxychlorination of Chromium (III) Oxide
By I. Gaballah
The kinetics of oxychlorination of pure CI-2O3 with C12+02 gas mixtures is studied by ThermoGravimetric Analysis (TGA) in non and isothermal conditions up to 1000 °C. The reaction of Cr2O3 with C12+O2
Jan 1, 1997
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Electrodeposition of Thin Multilayer Magnetic Materials
By K. C. Liddell
"Cu/Ni multilayers exhibiting giant magnetoresistance were deposited from a single electrolyte under stepped potentiostatic control. To enable transport measurements to be made without remounting the
Jan 1, 1997
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Treatment of Arsenic Sulfide Sludge for Arsenic Stabilization and Copper Extraction
By Jianxin Zhang
A process, in which arsenic in the residue is transformed directly into scorodite and copper dissolves into the solution simultaneously, was studied. The process was carried out in acidic ferrous sulf
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Development of Bismuth Smelting Technology in China
By Jun Li, Lin Chen, Tian-zu Yang, Wei-feng Liu, Wan-da Bin
"The Chinese bismuth production accounts for more than 80% all over the world in 2011. The main raw materials of bismuth smelting are bismuth concentrate and by-products of Cu or Pb smelting process.
Jan 1, 2013
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The Ecuprex® Process for Production of High Purity Cathodes from Copper Scrap Without Smelting Operation
By M. Opler
Presently, only a few large copper refineries are able to produce Grade A cathodes from copper scrap. Today's technology needs large plants for smelting, converting or refining the main impuritie
Jan 1, 1995
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Microbes for Biohydrometallurgy
By Henry L. Ehrlich
This survey compares bioleaching and biobeneficiation by autotrophic bacteria with that by heterotrophic bacteria and fungi Some physiological principles are reviewed. Advantages and disadvantages of
Jan 1, 1991
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Development of Process Design for Coral Bay Nickel Project
By N. Tsuchida
Sumitomo Metal Mining Co. Ltd. (SMMC) is currently developing the flowsheet to treat stockpiled limonite, a type of laterite ore, at Rio Tuba on southern Palawan Island, Philippines. The new plant wil
Jan 1, 2004
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Thermodynamics Of Removal Of Tramp Elements From Steel Scrap (Invited)
By Fumitaka Tsukihashi
Increasing amounts of steel scrap are being used as resources for steelmaking. Therefore, there has been a growing interest in the removal of harmful tramp elements such as antimony, zinc, tin, arseni
Jan 1, 2003