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Rare-Earth-Based Hydrogen Storage Alloy for Batteries
By Itsuki Uehara, Hiroyuki T. Takeshita, Tetsuo Sakai, Nobuhiro Kuriyama, Hideaki Tanaka
"AB5 type hydrogen storage alloys (A: rare earths, B: transition metals) are extensively applied to a negative electrode of a nickel metal hydride (Ni-MH) rechargeable battery for portable electric eq
Jan 1, 2000
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Five Low Cost Methods to Improve Energy Efficiency on Reverberatory Furnaces
By David Bequette, Ray D. Peterson, Cynthia K. Belt
"With a need to cut production costs in the metals industry, cost savings from energy efficiency improvements are critical. Opportunities can be found by reviewing furnace systems and practices so tha
Jan 1, 2010
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Rectorite: A New Phyllosilicate Species in Witwatersrand Palaeoplacers. Its Genesis and Implications for the Gold-Mining Industry
By H. V. R. von Rhaden
Systematic quantitative X-ray diffraction analyses performed on diamond-drill cores originating from the Aandenk formation at the Loraine Gold Mine, located in the Welkom goldfield, Orange Free State,
Jan 1, 1991
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Removal Of 'Nitrates' From Smelter Acid
By C. M. Davidson
Contamination of by-product: sulfuric acid, by dissolved oxides of nitrogen ('nitrates') occurs under some operating conditions encountered in sulfide roasting and smelting,, notably when ox
Jan 1, 1983
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Hydrogen Sulfide Produced From Sulfate By Biological Reduction For Use In Metallurgical Operations (2d4353c8-3fa9-4aeb-b4ea-243e29870bd7)
By Andre L. De Vegt
Hydrogen sulfide is an expensive chemical used in nickel, zinc and copper mining and metallurgical operations for selective recovery and concentration of metals, from leach water streams, acid plant b
Jan 1, 1998
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Physical Modelling of the Viscosities of Two-Phase Mixtures
By Du Sichen, S. Seetharaman, Wei Liu
"The viscosities of two-phase mixtures are of great importance in the modelling of the fluid flow in metallurgical processes. For example, in steel making and refining, the intimate mixing of metal dr
Jan 1, 2000
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Investigations In Different Reducing Agents For The Pyro-Metallurgical Treatment Of Steel Mill Dusts
By Helmut Antrekowitsch
Nowadays nearly the half of the world zinc production is used for galvanizing. After their life span most of the galvanized products return as scrap to the steel mill. During the steel process the zin
Jan 1, 2003
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Investigations In Different Reducing Agents For The Pyro-Metallurgical Treatment Of Steel Mill Dusts (5e969cbb-bd55-4f1d-9f1e-ed27af8ebec7)
By Helmut Antrekowitsch
Nowadays nearly the half of the world zinc production is used for galvanizing. After their life span most of the galvanized products return as scrap to the steel mill During the steel process the zinc
Jan 1, 2003
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Mass Transfer Model for an Induction Smelting Process: Prediction of an Iron Oxide Concentration
By G. S. Gupta
To predict the iron oxide concentration a mass transfer model has been developed for an Induction Smelting Process (ISP) in which self-fluxed composite pellets (made of iron ore, brown coal and lime)
Jan 1, 1991
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On The Quantification of Metal Flow Rate in Gas Atomization of Molten Metals
By R. Stefaniuk, T. Le, J-Y Huôt, H. Henein
"One of the most important process variables in gas atomization is the gas to metal (G/M) mass ratio as it has a direct effect on the mean particle size of the atomized powder. If this ratio can be co
Jan 1, 1994
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RECOFLO® Ion Exchange Technology
By Michael Sheedy
Recoflo® ion exchange technology utilizes fine mesh resin beads, a fully packed resin bed, and counter-current regeneration. These unique features help to improve exchange kinetics, reduce regenerant
Jan 1, 1998
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Use of Fe-Ni-Cr-Co Alloy Accessory Equipment to Improve Hot-Dip Galvanizing Operation Efficiency
By C. M. Antony
The galvanizing process involves the use of accessory equipment in a series of aggressive environments including zinc ammonium chloride flux, molten zinc at 45S°C (850°F), and acid for stripping of ad
Jan 1, 1992
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Metal Ferrite Spinels for Solar-Thermal Water Splitting Redox Cycles
By Melinda Channel, Alan W. Weimer, Jonathan R. Scheffe
"There is a need to develop cost effective renewable energy processes for the production of clean fuels that can simultaneously mitigate the U.S. energy/global environmental security issue. If H2 can
Jan 1, 2010
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Fluid Mixing Characteristics in a C-H2 Smelting Reduction Furnace Bath under Conditions of Combined Top, Bottom, and Side Blowing Process
By Deyou Yin, Kongfang Feng, Bo Wang, Jieyu Zhang, Xin Hong, Shaobo Zheng, Jinyin Xie
"The flow patterns and mixing characteristics in a water model of C-H2 smelting reduction furnace are experimentally studied in this paper. Water modeling is employed to investigate the features of ga
Jan 1, 2011
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Recovery of Nickel from Diluted Solutions by the Combination of Ion Exchange and Successive Electrodeposition
By Kim Verbeken, Evelien Van de Steene, Marc Verhaege, Jeriffa De Clercq
"AbstractThe industry is confronted with stricter discharge levels and an increasing awareness to avoid toxic waste (such as heavy metal containing sludge obtained in physicochemical water treatment)
Jan 1, 2008
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Fabrication of Al Matrix Composite by Reactive Infiltration Process
By M. Kobashi, T. Choh, N. Kanetake
"A new processing route, which enables the cost-effective and energy- saving fabrication of metal matrix composites, have been proposed. The pressureless infiltration of the reactive powder blend with
Jan 1, 2000
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Apatite Concentrate, A Potential New Source Of Rare Earth Elements
By Tianming Sun, Gabriella Tranell, Ragnhild E. Aune, Mark William Kennedy
Rare Earth Elements (REEs) are critical for the production of many advanced materials and products. Mining and primary production of REEs are generally associated with significant environmental impact
Jan 1, 2015
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Kinetics of Copper Concentrate Oxidation in Fluidized Bed Reactor
By Milorad Cirkovic
Kinetics of copper concentrate oxidation in roasting processes in a fluidized bed reactor has been studied at temperatures between 600°C and 720°C using particles of 0.038 to 2.5 mm in average size. T
Jan 1, 1999
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Pyrometallurgical Controls of Silver-Residue Smelting in a Short Rotary Furnace
By Atsuhiro Nabei, Ken-ichi Yamaguchi
"Wet chlorination process of de-copperized anode slime is followed by de-chlorination stage in which lead-sulfate and metallic silver form silver residue. The silver residue is subsequently reduced to
Jan 1, 2011
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Effect of Magnesium Content on Sulphuric Acid Consumption During High Pressure Acid Leaching of Laterite Ores
By Debbie Marshall
Nickel and cobalt in lateritic ores can be extracted by either a hydrometallurgical or a pyrometallurgical route. The high-iron limonitic fraction of a deposit is best processed' hydrometallurgic
Jan 1, 2004