Zobrazeno 1 - 10
of 57
pro vyhledávání: '"Matthew I Jeffrey"'
Publikováno v:
Hydrometallurgy. :69-75
The recovery of gold from iodine–iodide solutions using strong base anion exchange resin has been investigated. The gold iodide complex can be effectively loaded on the resin provided the resin is not heavily loaded with triiodide. The loading of t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9e3d80e9d71abad6ab63daf2bef551a5
https://doi.org/10.1016/j.hydromet.2012.05.007
https://doi.org/10.1016/j.hydromet.2012.05.007
Autor:
Henning Prommer, Matthew I Jeffrey, Paul Roberts, Hongguang Zhang, Janek Greskowiak, Evelien Martens
Publikováno v:
Hydrometallurgy. :16-23
In situ leaching (ISL) is the dissolution and subsequent recovery of minerals from the subsurface by injection of a chemical solution. Because ISL of gold does not involve bulk rock mining, it has great potential to be substantially more environmenta
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::456fe7fb60b5ebf0578bc6c509996a0b
https://doi.org/10.1016/j.hydromet.2012.05.005
https://doi.org/10.1016/j.hydromet.2012.05.005
Publikováno v:
Mining, Metallurgy & Exploration. 27:205-211
A high-pressure laboratory elution rig was commissioned to simulate industrial Zadra and AARL elution conditions for the stripping of gold, silver and mercury from loaded activated carbon. It was found that cyanide was essential for the efficient elu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f5a48adaad5b8bf8cbb1d9526b9a8a8d
https://doi.org/10.1007/bf03402444
https://doi.org/10.1007/bf03402444
Publikováno v:
Mining, Metallurgy & Exploration. 27:190-195
Gold cyanide equilibrium adsorption isotherms in the loading range typical of operating carbon-in-pulp/carbon-in-leach plants have been established and the effect of various cations and the presence of copper cyanide species quantified. It was found
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a3d99b050bb48fb44fe116ce4a79c62d
https://doi.org/10.1007/bf03402442
https://doi.org/10.1007/bf03402442
Publikováno v:
Mining, Metallurgy & Exploration. 27:184-189
This paper reports on the behavior of mercury and its compounds during the thiosulfate leaching and recovery of gold. Thiosulfate solutions are shown to dissolve Hg0 and Hg2Cl2 to a similar extent as cyanide, but the leaching of HgS is significantly
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::705d9df9ebd29597354129f7b1f1fcd6
https://doi.org/10.1007/bf03402441
https://doi.org/10.1007/bf03402441
Autor:
Matthew I Jeffrey, Hongguang Zhang
Publikováno v:
Inorganic Chemistry. 49:10273-10282
The kinetics of reactions of trithionate and tetrathionate via different reaction pathways were studied in near-neutral solutions. In the case of trithionate, the predominant degradation reaction is hydrolysis to thiosulfate and sulfate. The pseudofi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::704d7273a72e64f838f73bea5d323733
https://doi.org/10.1021/ic9023025
https://doi.org/10.1021/ic9023025
Autor:
Elsayed Oraby, Matthew I Jeffrey
Publikováno v:
ECS Transactions. 28:237-248
A fundamental electrochemical study of gold and gold/silver alloys in thiosulfate solutions showed that although the oxidation is a complex process, there was no selective dissolution of either gold or silver from the alloys during oxidation. The pre
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2c144a0403ebf05973ae2ca0208eca4c
https://doi.org/10.1149/1.3367917
https://doi.org/10.1149/1.3367917
Publikováno v:
ECS Transactions. 28:165-177
The oxidation of sulfide ions in cyanide solutions by oxygen is catalysed by pyrite. Polysulfides are detected as an intermediate product in the oxidation reaction for both cyanide and non-cyanide alkaline solutions. The major product for oxidation i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::df3dc1dd9ef83ca66070cf3f0002cc65
https://doi.org/10.1149/1.3367911
https://doi.org/10.1149/1.3367911
Publikováno v:
ECS Transactions. 28:281-294
The electrodeposition of copper from solutions containing free cyanide is difficult under alkaline conditions, but can be substantially enhanced by decreasing the pH due to the formation of the more electroactive aqueous species, Cu(CN)2-. The optimu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7224c9e905782f66b26659db63ac94c4
https://doi.org/10.1149/1.3367921
https://doi.org/10.1149/1.3367921
Publikováno v:
Hydrometallurgy. 101:99-107
A mechanistic model has been developed to describe the equilibrium adsorption of copper cyanide species onto activated carbon. This model was based on the calculation of equilibrium between the various copper cyanide complexes in both the aqueous and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aae7158402823367e7088f6ae9338a07
https://doi.org/10.1016/j.hydromet.2009.12.005
https://doi.org/10.1016/j.hydromet.2009.12.005