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Synthesis of Nanosized Tungsten Carbide By a Thermal Plasma Process
By Taegong Ryu
The thermal plasma process has been applied to the preparation of nanosized tungsten carbide (WC1-x). The reduction and carburization of the vaporized chloride by methane-hydrogen mixtures produced na
Jan 1, 2008
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Experience And Success With BSF Lead Smelting In Nordenham, Germany
By Ulrich Kerney
In 1996, bath smelting technology for lead recovery from concentrates and secondary materials was introduced in Nordenham to replace the common sinter plant/shaft furnace operation. Since start-up, a
Jan 1, 2006
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Modeling of Interdendritic Strain and Interdendritic Cracking Phenomena during Dendritic Solidification Processes
By Mostafa O. El-Bealy
"To estimate the interdendritic cracking tendency in casting processes, a new model for interdendritic cracking criteria has been proposed. The model combines a concept of the alloying element effect
Jan 1, 2001
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Ecologically Safe Technology For Extraction Of Nonferrous Metals From Sulfide Raw Materials By Means Of Bacterial Leaching
By Olga Slavkina
A new technology of bacterial leaching by means of the Thiobacillus ferrooxidance bacteria is proposed. The equations of reactions that describe of the first and the second stage of bacterial leaching
Jan 1, 2003
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A New Advanced CFD Model For Flash Smelting And Converting Processes
By Tapio Ahokainen
Commercial modeling software and increasingly efficient computers enable today computational fluid dynamics (CFD) to be used as a tool for a more comprehensive understanding of the flash smelting and
Jan 1, 2006
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Using of Spent Foundry Sands for Production of Burned Ceramic Building Materials: Influence for Environment
By Sylwia Zymankowska-Kumon, Rafal Danko, Józef Danko, Mariusz Holtzer
"Burning of ceramic materials is carried out at temperatures 900+ 1300°C, in dependence of the required functional properties. The Faculty of Foundry Engineering together with the Faculty of Material
Jan 1, 2013
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Processing of Spent Catalysts by Selective Chlorination
By I. Gaballah
Spent hydrorefining catalysts may contain 4 to 6 % of COO and/or NiO, 8 to 16 % of Moo3 and up to 10 % V205 generally supported by alumina. Raw samples are roasted in order to eliminate carbon, sulfu
Jan 1, 1993
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Check On Level Of Environmental Contamination By Mercury And Cleanup Of Abetina Mining Area (Grosseto-Italia)
By G. Belardi
The purpose of the study was to check on the level of environmental contamination and to design a project for cleaning up the Abetina Mine area at Piancastagnaio (Grosseto, Italy). Contamination of th
Jan 1, 1996
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Ore Mineralogy and Gold Size Distribution in the Gold-Silver-Antimony-Tungsten Mineralization of the Fairbanks Mining District, Alaska
By P. A. Metz
The Fairbanks mining district has produced in excess of 7.5 million troy ounces of placer gold and 250,000 troy ounces of lode gold since gold was discovered in the area in 1902. The Fairbanks mining
Jan 1, 1987
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Use of Co-Products from Sunflower Oil Extraction for Manufacture of Composites
By N. M. S. Balbinot, A. L. Rodríguez, C. M. Mahlmann, R. de C. de S. Schneider
The use of sunflower oil co-products it was studied for production thermoplastic composites. Thermoplastic composites have been processed in polyethylene matrices of virgin linear low density polyethy
Jan 1, 2008
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Recent Developments In Iron Removal And Control At The Zinc Corporation Of South Africa
By Claassen J. O.
The Zinc Corporation of South Africa Ltd. (Zincor) operates an integrated roast ? leach ? electrowinning circuit. The efficient removal and control of iron forms an integral part of the process. Zinco
Jan 1, 2003
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Volatilization of Zinc and Manganese From Natural and Synthetic Franklinite, Jacobsite and Willemite in a HCI/H2O Pyrohydrolytic Atmosphere
By Edgar Peek
Lixiviant regeneration is by definition a precondition for any hydrometallurgical process. In chloride hydrometallurgy either HCl or Cl2 has to be regenerated in order to establish an economically via
Jan 1, 1995
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The Influence of Spinel Formation on Copper Loss in Smelter Slags
By Roger Altman
The solubility of copper in primary spinel crystals encountered in reverberatory slag samples has been determined by electron microprobe analysis. These spinels, which ranged in composition from 22% A
Jan 1, 1976
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Electrochemical Production Of Materials Using Molten Salts
By Derek Fray
Molten salts have been used for the extraction of metals since the 19th century but, recently, many interesting processes have been investigated using mixtures of molten salts and different cathodic m
Jan 1, 2006
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Aluminothermic Smelting: A Versatile Process Serving Demanding Markets
By Jr. Robison
"Aluminothermic (""thermite"") smelting became commercial with the development of tonnage aluminum, and prospered producing metals and alloys with higher cleanliness, consistency and elemental control
Jan 1, 2012
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Liberation of a Large Quantitiy of Waste Materials by the Explosion in Water: A Technique with a Relatively Low Energy Consumption
By Gjergj Dodbiba, Atsushi Shibayama, Toyohisa Fujita, Takashi Shikazumi, Yukio Kato, Kenji Murata
"A new crushing or liberation technique by means of underwater explosion is put forward. This technique is suitable for crushing and liberating various materials, for instance: the electric parts of t
Jan 1, 2008
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Effect of Transverse Depressions and Oscillation Marks on Heat Transfer in the Continuous Casting Mold
By D. Lui, B. G. Thomas, B. Ho
"Results from mathematical models and plant experiments are combined to quantify the effect of transverse depressions and oscillation marks on heat transfer in the continuous casting mold. A heat tran
Jan 1, 1997
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Optimization of the Reverb Furnace Slag Composition in the RTB BOR Serbia
By Natasa Mitevska
In order to ensure the minimal copper concentration in the reverb furnace slag, the graphical optimization method is used and the optimal slag composition of the reverberatory furnaces No.1 and No.2 i
Jan 1, 2003
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Direct Redaction of TI-V Magnetite via ITmk3 Technology
By E. V. Redin, B. A. Dubrovsky, E. V. Knyazev, A. I. Starikov
"Ti-V magnetite is one of the most abundant composite ore resources in the world. This ore cannot be fully processed via blast furnace technology because of high content of Ti02. According to the inve
Jan 1, 2013
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Effect Of lntense Magnetic Field On CdTe Electro-Deposition (Invited)
By Toshiyuki Kozuka
CdTe metal composite semi-conducting material has high potential in good performance of energy conversion efficiency for solar cell and there is much room for improvement of the performance by develop
Jan 1, 2003