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Electrochemical Contribution of Pyrite in Arsenopyrite Reactivity
ECS Meeting Abstracts, 2006Abstract not Available.
Gustavo Urbano +3 more
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Bacterial oxidation of arsenopyrite and enargite
Economic Geology, 1964In the bacterial oxidation of arsenopyrite under laboratory conditions, almost twice as much arsenic was brought into solution by bacterial oxidation as by spontaneous oxidation; iron was only slightly affected. In experiments with enargite, bacterial oxidation produced a sixfold enhancement of the solution of copper and iron, but had little effect on ...
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Electrochemical behavior of arsenopyrite in alkaline media
Mining, Metallurgy & Exploration, 1991Electrochemical oxidation of arsenopyrite (FeAsS) has been investigated as an attempt to gain a better understanding of its dissolution chemistry. Rest potential measurements, cyclic voltammetry and constant potential experiments were conducted in the pH range from 8 to 12 in the absence and the in the presence of cyanide.
V. M. Sanchez, J. B. Hiskey
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Arsenopyrite Oxidation with Ozone: Stoichiometry and Kinetics
Ozone: Science & Engineering, 2018When the recovery of precious metals by standard cyanidation is less than 80%, the ore is classified as refractory and needs an oxidizing pretreatment before cyanidation. Arsenopyrite is one of the main sulfide matrixes where occurs refractory gold. In this work, the arsenopyrite leaching in acid media was studied using ozone as an oxidizing agent. The
C. Rodríguez-Rodríguez +2 more
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[Identification of realgar and arsenopyrite and their sublimates].
Zhongguo Zhong yao za zhi = Zhongguo zhongyao zazhi = China journal of Chinese materia medica, 2001In this paper, two traditional Chinese medicinal minerals realgar and arsenopyrite, as well as their sublimates are identified in their nature, physical and optical properties, chemical compositions and trace elements. The result has shown that there are marked differences among realgar, arsenopyrite and their sublimates, and it should be particularly ...
F, Li, L, Li, Y, Han
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Electrochemical oxidation of arsenopyrite in acidic media
International Journal of Mineral Processing, 1997Abstract Arsenopyrite (FeAsS) is a common sulfide mineral in base metals and precious metals ores and concentrates. The treatment of these kinds of ores involves frequently an oxidation step to improve metal recoveries. The study of the mechanisms occurring during the arsenopyrite oxidation is then necessary to optimize industrial processes, like ...
Isabel Lázaro +3 more
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Journal of Hazardous Materials
Bornite and arsenopyrite are common sulfide minerals in copper ores. The similar physicochemical properties of these minerals pose challenges for their effective separation through traditional flotation methods. This study systematically investigated the impact of sodium persulfate (Na2S2O8) treatment on the flotation performance of both bornite and ...
Kang Feng +4 more
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Bornite and arsenopyrite are common sulfide minerals in copper ores. The similar physicochemical properties of these minerals pose challenges for their effective separation through traditional flotation methods. This study systematically investigated the impact of sodium persulfate (Na2S2O8) treatment on the flotation performance of both bornite and ...
Kang Feng +4 more
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Aqueous pressure oxidation of arsenopyrite
1986This item was digitized as part of a project to share McGill's intellectual legacy with the public. If you are the copyright holder or a relative of the copyright holder who is deceased, you may request withdrawal by emailing escholarship.library@mcgill.ca.
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Oxidation of arsenopyrite in bacterial ferric solutions
1994In this study the oxidation of arsenopyrite in bacterial ferric solutions is examined. Leaching tests were conducted in air-stirred pachuca reactors in order to define the major factors influencing the oxidation of arsenopyrite and to underline the importance of indirect leaching of the mineral by bacterially generated acid ferric sulphate solutions ...
Constantine Komnitsas, F. D. Pooley
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