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Characterization of Tin-rich Copper Anodes from Secondary Copper Refineries
By T. T. Chen
Copper anodes generated from copper scrap are relatively rich in Sn, Zn and Fe. Because of the presence of oxygen, only trace amounts of Sn occur in solid solution in the copper crystals. Thus, Sn occ
Jan 1, 2010
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Improvement On Magnetic Properties Of Nanocomposite NdFeB Melt Spun Ribbons By Elemental Substitutions
By W. C. Chang
Phases and magnetic evolutions of melt spun Nd9.5(Fe1-xCox)85.5B5 (x=0, 0.05, 0.1 and 0.15), (Nd1-yLay)9.5Fe85.5B5 (y=0, 0.0.5, 0.1; and 0.15) and (Nd0.95La0.05)9.5(Fe1-zCrz)81.5B9 (z=0, 0.033, 0.06
Jan 1, 1997
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Direct Sulfation Of Nickel Laterite Ores Using Sulfur Dioxide Rich Gases
By D. Papazoglou
This work was undertaken to investigate the thermodynamic and kinetic feasibility of using hot sulfur dioxide bearing gases from smelting processes to selectively sulfate the nickel in nickel laterite
Jan 1, 2003
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EDXRF Analysis Of Alloys And Corrosion Products Of Metallic Pre-Hispanic Pieces Of The Museum Of Ethnology And Archaeology Of The University Of Sao Paulo
By A. C. Neiva
An energy-dispersive x-ray fluorescence spectrometer was assembled with the aim of analysing alloys and corrosion products of artistic, ethnological and archaeological pieces. The spectrometer is semi
Jan 1, 2006
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Oxygen Flash Converting for Production of Copper
By G. S. Victorovich
Technical progress in primary smelting has changed the face of the copper industry in the years since the Second World War. Much of this change has resulted from a wide acceptance of flash smelting te
Jan 1, 1993
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Review of the Thermochemical Nature of Minor Elements in Matte and Thermodynamic Modeling of Their Dissolution in Matte
By D. C. Lynch
While a sizable amount of data exist as to the activity and distribution of minor elements between matte and metal, there has been no unifying theory presented delineating the form of dissolution of t
Jan 1, 1993
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Removal of Hg(II) from Aqueous Solutions Using Spent Grain
By Liyuan Chai
In this study, spent grain was used as an adsorbent for the removal of Hg(II) from aqueous solutions, the process parameters such as contact time, solution pH, adsorbent dose, and initial Hg(II) conce
Jan 1, 2009
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New Thermodynamic Data On The Hg-O-S System: With Application To The Thermal Processing Of Mercury Containing Wastes
By Guy L. Fredrickson
A modified transpiration reactor was used to measure the composition of the equilibrium gas phase formed above compounds in the Hg-O-S system at high temperatures (600 to 900K). A thermodynamic databa
Jan 1, 1996
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Effects of Solidification Rate and Alloy Composition on the Cast Microstructure of Aluminum Alloy 5182
By P. N. Anyalebechi
The effects of solidification rate (0.4-26.1 K/s) and alloying elements on the cast microstructures of aluminum alloy 5182 have been investigated with directionally cooled laboratory-size ingots. The
Jan 1, 2010
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The Reception of Ceramic Aluminum Silicate Refractories
By B. P. Sereda
The properties, characteristics and phase structure of chamotte refractories produced with the usage of mullitecorund chamotte and caoline have been given. The comparison of new refractory C-45 obtain
Jan 1, 2010
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The Influence of Different Heat treatment Cycles on Controlled Surface Graphitization in CK45 Steel
By A. R. Kiani-Rashid
Controlled graphitization has become known as a practical method for improvement of wear resistance and machining properties in steels. In this paper, the effect of heat treatment on microstructure of
Jan 1, 2010
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Synthesis and Characterization of Pure and Doped Nanocrystalline Zinc Oxide
By Rashmi Ramesh
Zinc oxide nanoparticles and nanostructures form an active area of research in the recent years. It can be doped to modify electronic, optical and other properties. Synthesis and characterization of z
Jan 1, 2010
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Main Parameters On The Performance Of A Desulfurization Of Ferro-Nickel By Slag Reaction
By M. Hochenhofer
Keywords: desulfurization, mathematical model, slag reaction To produce ferroalloys like ferro-nickel for alloying purposes in a quality that meets the requirements of today?s steel industry, refi
Jan 1, 2005
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Pressure Leaching of Enargite-Pyrite Concentrates
By María Cristina Ruiz
Enargite rich copper concentrates can not be treated by conventional smelting/converting technology and thus nonconventional methods such as leaching must be used. Since enargite (Cu3AsS4) is a hard t
Jan 1, 2010
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Barite Mineralization In Volcanic Rocks In Southern Flank Of East-Magnitogorsk Palaeoisland Arc (South Urals)
By Natalya. N. Ankusheva
The problems of ore-bearing palaevolcanic structures in folded belts are actual because of their high productivity in nonferrous, ferrous and noble metals ores. Now relationships of location and condi
Jan 1, 2006
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2D Imaging of Nano-Hardness and Phase Characterization in Steel by Noncontact Optical Photodeflection Microscopy
By Ulises Crossa Archiopoli
We describe a technique that allows rapid imaging of the thermal diffusivity of the sample by a modified photo-thermal technique. The thermal diffusivity in hardened steels strongly correlates to the
Jan 1, 2010
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Copper Converting Versus Steel Converting A Critical Comparison (Invited)
By Lauri Holappa
Copper converting is mostly performed in Peirce-Smith converters. The process is still very similar to the original one developed in the early 20th century. It is a batch process in a horizontal cylin
Jan 1, 2003
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Fe-Mn-Al-C Austenitic Steels Treated by Ca and Ce
By S. N. Lekakh
Phosphorous segregated at grain boundaries during solidification and heat treatment dramatically decreases low temperature toughness of precipitation hardened Fe-Mn-Al-C austenitic steel. A thermodyna
Jan 1, 2010
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Characterization of the Flexural Properties of Polyester Matrix Composites Reinforced with Continuous Jute Fibers
By Sergio N. Monteiro
Jute fiber reinforced polymer composites are among the most investigated and applied natural composites. In this past decade the mechanical properties of these composites has been assessed for various
Jan 1, 2010
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A Collaborative Tool for Waste Management in the Industry
By M. S. Borges
The need for the waste management industry to reach environmental patterns, technological innovation, and a technological demand of the productive sector is covered by this study. The environmental ca
Jan 1, 2010