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Recycling System of Waste Materials from Discarded Mobile Phone
By Kunihiko Takahashi, Gjergj Dodbiba, Hisayoshi Umeda, Toyohisa Fujita
"An increasing number of mobile phones is increasing the number of the discarded mobile phones. Many efforts are thus being made to collect and recycle these devices. This paper is a short introductio
Jan 1, 2008
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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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Evaluation of the Interfacial Strength of Ramie Fibers in Polyester Matrix Composites
By Sergio Neves Monteiro
The efficiency by which an applied load is transmitted through the composite structure depends on the strength of the interface between the matrix and the second phase. In fiber reinforced composites,
Jan 1, 2010
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Weibull Analysis of Tensile Tested Piassava Fibers with Different Diameters
By Denise Cristina Oliveira Nascimento
Environmental considerations in addition to technical, economical and societal benefits are increasingly promoting the substitution of natural fibers for glass fiber in polymer matrix composites. Howe
Jan 1, 2010
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Capability of CO-H2H2S Mixtures to Carbidize Iron Ore Reduced at Elevated Temperatures
By Koji Matsubara, Yoshiaki Iguchi, Shoji Hayashi
Iron ore particles of a limonite iron ore were reduced completely with H2 at 1023K to 1273K in a fluidized bed. Then, at 973K, the formed iron was exposed to HrH2S mixtures (sulfur activity, as=0.5) f
Jan 1, 2000
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Recovery of Components and Valuable Metals from Printed Circuit Boards
By A. Gibson
Most methods for the treatment of scrap printed circuit boards do not reclaim the components in working order as the boards are either fed to a copper smelter, to recover the valuable elements, or, si
Jan 1, 2009
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Plasma-Assisted Chemical Vapor Synthesis of Tungsten Carbide and Cobalt Nanocomposite Powder
By Taegong Ryu
A thermal plasma process was used to synthesize nanosized tungsten carbide -cobalt composite powder, in which ammonium paratungstate and cobalt oxide were reacted with a gas mixture containing CH4, H2
Jan 1, 2009
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Optimization Of The Pig Iron Desulfurization Inside A Torpedo Car By Physical Modeling Techniques.
By Varadajan Seshadri
Keywords: torpedo car, kinetics, physical modeling A 1:6 torpedo car physical model was built to assess the optimum refining conditions for pig iron desulfurization in the torpedo car considering t
Jan 1, 2005
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Studying Solvent Extraction Settler Process By Using CFD
By Timo Kankaanpää
Keywords: Solvent extraction, dispersion, phase separation, CFD The liquid-liquid dispersion phases are separated by gravity in a solvent extraction settler. This separation step is made more effec
Jan 1, 2005
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A Thermodynamic Model For The Reaction Zone Of Lead Blast Furnace
By Pengfu Tan
A thermodynamic model has been developed to predict the distribution behaviors of Cu, Fe, S, O, Pb, Zn, As, and heat balance in a lead blast furnace. The modeling results have been validated by the pl
Jan 1, 2005
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Structural And Morphological Characterization Of A Natural Graphite After Application Of High Pressure And High Temperature Treatment
By A. L. D. Skury
In the synthesis of diamond, the precursor graphite must present a degree of crystallinity to assure optimum yield and quality for the transformed crystals. X-ray diffraction, SEM and TEM analyses wer
Jan 1, 2006
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Size-Dependent Melting Characteristics of Lead-free Solder Alloys in Microelectronics
By NRMR Bhargava
With the increasing use of lead-free solder alloys, low melting point alloy is often required due to the heat- sensitive parts or substrates in modern electronic devices. For such demand of low meltin
Jan 1, 2009
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Micro-Macro Modeling of Solidification Processes and Phenomena
By Vaughan R. Voller
"The wide range of length and time scales found in solidification processes are outlined and discussed. Methods for Direct Microstructure Simulation (DMS) are introduced. Key features in sharp interfa
Jan 1, 2001
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A Clean Method Applying Anion-Exchange Separation And Membrane-Electrolysis To Regenerate Fe-Zn-Hcl Spent Pickling Liquors
By Gábor Csicsovszki
We have developed a novel method - at the laboratory scale - comprising an ion-exchange separation and a membrane-electrolysis step for the purpose of zero-waste regeneration of spent HCl pickling liq
Jan 1, 2006
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Thermodynamic Modeling of copper drossing process in lead refining
By Pengfu Tan
Lead blast-furnace bullion cools to near its freezing point in an operation known as copper drossing or hot drossing usually contains 0.02-0.06% copper. The removal of this copper is usually carried o
Jan 1, 2006
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Pullout Test Of Coir Fiber To Evaluate The Interface Strength In Polyester Composites
By Sergio N. Monteiro
Polymeric composites reinforced with natural fibers are increasingly been used in several engineering applications, from automotive parts to building construction elements. In addition to the relative
Jan 1, 2006
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Incentives for Recycling: Mitigating Risks to Downstream Firms
By Frank R. Field, Randolph E. Kirchain, Elisa Alonso
"There are a number of environmental incentives for increasing recycling, including the reduction of waste, energy and resource use. Recycling can also be advantageous for manufacturing firms in both
Jan 1, 2008
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The Spent Consumer Battery Recycling Situation In Taiwan
By Esher Hsu
Keywords: Recycling, Consumer Battery, Fee rates On November 11, 1999, all types of spent consumer batteries are proclaimed to be collected in Taiwan. Under current recycling system, all producers
Jan 1, 2005
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Selective Oxidation of Uranium In Situ Leaching
02, NaCI03, H202, Na0CI and Ce+4 have been examined as oxidants in an alkaline carbonate system for uranium in in situ leaching. The South Texas and New Mexico ores contained up to 2.6 meqJg of reduci
Jan 1, 1990
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Study on Selectively Separating Iron Constituents in Copper Smelting Slags
By Hongyang Cao
The iron constituents selectively separated from the modified copper slags by magnetic separation and flotation.were studied. The results of magnetic separation for modified copper smelting slags show
Jan 1, 2009