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Chalcopyrite leaching in novel lixiviants
Hydrometallurgy, 2022Abstract Chalcopyrite (CuFeS2) makes up a large and increasing fraction of the world's future copper resources, but is highly refractory to leaching with common lixiviants. Novel lixiviants, less common reagents recently proposed for chalcopyrite leaching and reviewed here, show varying chemical effectiveness and economic potential.
Isabel F. Barton, J. Brent Hiskey
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Thiosulphate: An alternative lixiviant for gold ore
Mineral Processing on the Verge of the 21st Century, 2017Dissolution of precious metals from Ovacik gold ore py ammoniacal thiosulphate has been investigated. The effect of parameters such as solid / water ratio, S2O32-, Cu2+, NH3, SO32- concentrations and leaching time have been experimentally determined. In optimum leach conditions 82 % Au and 83 % Ag recoveries have been obtained.
Mordogan, H +3 more
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Lixiviation kinetics of cobalt from cemented carbides
International Journal of Refractory Metals and Hard Materials, 2018Abstract This report aims to disclose interactions between semi-direct recycling concepts, corrosion analysis of hard metals and possible leaching mechanisms. Accordingly, an examination reveals chemical kinetic dependencies via leaching a cutting insert in formic acid inclusive an oxidant. Currently, contradictions and issues in literature slow down
Gregor Kücher +3 more
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Lixiviation Oxydante du Sulfure de Cuivre
Bulletin des Sociétés Chimiques Belges, 1959AbstractLa cinétique formelle de la réaction d'oxydation par l'oxygène du sulfure de cuivre en suspension dans l'eau a été déterminée pour différentes conditions expérimentales. En solution neutre la réaction est plus lente qu'en solution acide ou ammoniacale : la raison en est l'étape primaire de formation de soufre et de CuO.
J. Rygaert +2 more
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Metal Lixiviation of Steel Foundry Dust
1991Solid waste, steel foundry dust, comes from gas filtration units in the steel industry. Taking into account two main manufacturing processes leading to common steel and special steel, two different byproducts have been investigated: dust P1 from special steel manufacture and dust P2 from common steel manufacture.
A. Andrés +3 more
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Leaching of Glauconitic sand stone in acid lixiviants
Minerals Engineering, 1992Abstract Laboratory studies have been conducted on acid leaching as a possible route for extraction of potassium from Glauconitic sandstone, a secondary source of potassium. The effect of temperature, concentration and type of acids, strirring speed and leaching time on potassium dissolution have been investigated.
V.P. Yadav, T. Sharma
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Lixiviation Effects In Glass Polishing
SPIE Proceedings, 1989From our glass polishing process of precision optics we know that its physical-chemical nature frequently leads to a complex interaction of several parameters determining the process and the resulting quality. Surface analysis using SIMS and WDX prove that surface and sharp edge polishing of integrated optics chips has to be watched critically in order
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Aqueous lixiviants: Principle, types, and applications
JOM, 2007Aqueous lixiviant is a leach liquour capable of dissolving all or part of ore or concentrate. It plays a critical role in the hydrometallurgical process. Although cyanide leaching of gold and silver has demonstrated success in the industry for 100 years, searching for innovative lixiviants to leach gold, copper, and other heavy metals effectively ...
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