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Atmospheric Chloride Leaching: The Way Forward For Nickel LateritesBy Bryn Harris
Chesbar Resources Inc.1 is developing a nickel-cobalt laterite project in Guatemala, Central America, by applying existing atmospheric chloride technology to a known resource. The tropical laterite p
Jan 1, 2003
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Pyrometallurgical Treatment Of Copper Tank House SlimesBy G. G. Barbante
Copper anode slimes are a valuable source of the precious metals, and selenium and tellurium. They are mineralogically complex and this has led to a great variety of process flowsheets for treating th
Jan 1, 1994
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Basic Aspects of Ecological and Economical Industrial Waste Material UsageBy Petr Sulovsky, Jaroslava Ledererova, Miroslav Svoboda, Michaela Suchardova
"The thinning resources of natural raw materials necessitate an increased degree of waste material recycling. The building industry offers a range of technologies enabling incorporation of industrial
Jan 1, 2008
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Magnetic Collection Of Grinding Ball Fragments From SAG And Ball Mill CircuitsBy Daniel A. Norrgran
Grinding ball fragments discharging from SAG mills and ball mills causes extreme wear to downstream processing equipment. These ball fragments, recirculating in a milling circuit, will cause excessive
Jan 1, 1999
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Preparation Of Gold Catalysts From Gold Dissolved In Aqua RegiaBy Eun Duck Park
The gold catalyst supported on iron oxide was prepared from gold dissolved in aqua regia by a deposition-precipitation method and applied to CO oxidation in the absence and presence of hydrogen. Some
Jan 1, 2006
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CO2 Reduction Strategies in the Basic Metals Industry: A Systems ApproachBy Dolf Gielen
This paper discusses the results of a Western European energy and materials systems engineering study that analyses the impact of greenhouse gas (GHG) emission reduction on the future of the steel and
Jan 1, 1999
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Indirect Drying Of Concentrates At Copper And Nickel Smelters By Means Of Innovative, Cost Effective Environmental TechnologiesBy Christian M. Sagedahl
The stringent environmental regulations for air pollution regarding emission control, along with the need of dry concentrates to feed autogenous smelting processes, are enhancing the development of cl
Jan 1, 1999
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Leaching of Chalcopyrite Concentrate with Organic Ligand CompoundsBy G. T. Lapidus, O. J. Solis-Marcial
"The oxidative dissolution of copper from refractory minerals, such as chalcopynte, represents a technological challenge that has occupied hydrometallurgists for more than half a century. Innumerable
Jan 1, 2012
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Injection of Alternative Carbon Containing Materials in the Blast FurnaceBy Erik Olsson, Gunilla Hyllander, Stefan Schuster, Lena Sundqvist Ökvist, Maria Lundgren, Michael Hensmann, Olavi Antila
"Residual materials from the integrated steel plant itself or other sources often contain valuable compounds of e.g. C and Fe. Dust and sludge have to be agglomerated to be able to recycle to the blas
Jan 1, 2012
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Electrochemistry of Coal Pyrite Samples at Different pHBy Miguel N. Herrera
The electrochemistry of coal pyrite is relevant to coal desulfurization by chemical or bacterial leaching, flotation and oil agglomeration. The electrochemical behavior of polished and etched Upper Fr
Jan 1, 1994
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Influence of Arsenic on the Chemical Wear of Magnesia-Chromite Refractories in Copper Smelting FurnacesBy Katja Reinharter
Arsenic can be found in different sulfidic copper concentrates and residues, which for several years have commonly been used in copper metallurgy, as the “arsenic-free” resources are getting rare. Due
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Heat Losses To Furnace Coolers As A Function Of Process IntensityBy Pan Gu, Zhen Zhang, Jiang Diao, Bing Xie, Hongyi Li
Furnace refractories are in most cases chemically incompatible with smelter slag, which leads to a steady erosion in their thickness over time. Once too thin, refractory walls become mechanically unst
Jan 1, 2016
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Aluminum Smelter Waste Heat Recovery Plant (Heat Exchangers Fouling and Corrosion-a Detailed Investigation)By Reza Kamali, Mohsen Bashiri, Hadi Fanisalek
"Nomenclature: A: area (m2), C: heat capacity (WIK), cp: specific heat (J/Kg K), d: internal tube diameter (in), F: correction factor for multi-pass and crossflow heat exchanger, h: convective heat tr
Jan 1, 2012
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Mechanical Activation Of Processing Of Egyptian WolframiteBy Mohamed Y. Bakr, Aly M. Abdel-Rehim
The present work is related with mechanical activation of processing of Egyptian wolframite by simultaneous ball-milling and pressure alkaline leaching, to improve the recovery of tungsten from wolfra
Jan 1, 2015
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Magnesium Alloys Containing Rare Earths For Space Applications: Microstructural AspectsBy K. Suseelan Nair
Magnesium alloys containing rare earths are finding increasing applications in space programmes. A number of alloys have been developed and e good data base an the mechanical properties of these alloy
Jan 1, 1989
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Nonmetallic Inclusions in Solar Cell Silicon: Focusing on Recycling of ScrapsBy Samuel Senanu, Benjamin Agyei-Tuffour, Lifeng Zhang, Eivind Øvrelid, Adegboyega Nathaniel Femi
"The solar grade silicon ingot produced from directional solidification process usually pushes the impurities to the top and finally cut off and discarded, which leads to material loss. The hard inclu
Jan 1, 2008
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A Critical Analysis of the Biodiesel Program in BrazilBy Luciano B. Oliveira, Angela O. Costa, Sergio N. Monteiro, Luis Guilherme C. Marques
"Biofuels are gaining a relevant role in today’s world not only as a solution for the decreasing petroleum reserves but mainly as a positive contribution to the efforts in global warming mitigation. I
Jan 1, 2008
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Activation and Deactivation Effects of Lead on Gold CyanidationBy Rina Kim
The addition of lead to a gold leaching reactor can effectively accelerate or retard the gold cyanidation reaction. This study explored the effect of lead on the gold dissolution kinetics using cyclic
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Dynamics of Splash Formation in Gas Injected SystemsBy N. B. Gray, A. E. Guerra, D. E. Morton
"The formation of splash in pyrometallurgical operations that involve the injection of gases into a liquid has been the subject of a number of studies over the last few decades. Given the complexity o
Jan 1, 1996
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Case Study on the Application of Research to Operations—Calcium Ferrite SlagsBy Stanko Nikolic
The Top Submerged Lance (TSL) technology, developed in the 1970s, is now widely used for the processing of a range of materials. TSL technology for continuous converting was first patented in the 1990