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Ammoniacal thiosulfate leaching of refractory oxide gold ...

 · Ammoniacal thiosulfate leaching of refractory oxide gold ore was investigated. According to X-ray fluorescence and fire assay analyses, the ore contained about 33.01 wt% Si, 8.53 wt% Al, 7.26 wt% K, 3.00 wt% Fe, and 2.80 ppm Au.

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  • Sherritt International - About Us - History

    Sherritt International - About Us - History

    Sherritt licenses its pressure process for nickel concentrates and mattes to Western Mining Corp Australia, and its acid pressure process for PGM-bearing nickel-copper mattes to Impala Platinum South Africa. Sherritt starts pilot testing its laterite process for the Marinduque project Philiippines.

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  • How to Use Bleach on Gold Ore to Remove Gold | Sciencing

    How to Use Bleach on Gold Ore to Remove Gold | Sciencing

     · Pour the acid-and-bleach mixture into the plastic bowl with the ore grains and stir. Allow four hours for the gold to dissolve, stirring every 20 minutes. The chlorine reacts with the gold inside the ore to form gold chloride. Filter the ore and bleach solution to …

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  • Industrial Application of Ammonia Assisted Cyanide ...

    Industrial Application of Ammonia Assisted Cyanide ...

    ores are outlined. Previous work on the use of in copper- cyanide systems is reviewed. The test work leading to the introduction of in the industrial plant is described. In the plant it was found that the extraction of copper was halved by the use of …

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  • The Principles and Applications of Ammonia Leaching of ...

    The Principles and Applications of Ammonia Leaching of ...

    Eh-pH diagrams of various metal- -water systems are presented. Also presented is a comprehensive literature survey on the behavior of metals in ammoniacal solutions. The metals considered in this paper are copper, cobalt, nickel, zinc, cadmium, silver, and palladium.

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  • Optimal Conditions for Ammonia Leaching of Copper ...

    Optimal Conditions for Ammonia Leaching of Copper ...

    solution as a medium for base metals can be considered as an excellent alternative for acidic solutions [13,15]. The reason for this is the very high stability constant of complexes for silver, , cobalt, copper, nickel and zinc [11]. is also

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  • EXTRACTION OF GOLD AND SILVER FROM TURKISH GOLD ORE …

    EXTRACTION OF GOLD AND SILVER FROM TURKISH GOLD ORE …

     · The influence of temperature, copper sulphate concentration, concentration, thiosulphate concentration, sodium sulfite concentration, and solid–liquid ratio on and silver recoveries was investigated and optimum conditions were determined. At these conditions, 99.57% Au and 95.87% Ag recoveries were ...

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  • Palladium Leaching in Ammonia - 911metallurgist.com

    Palladium Leaching in Ammonia - 911metallurgist.com

    Recently, a number of techniques of recovering Palladium have been developed. For example, of platinum group metals from spent automobile catalytic converters using halogen salt with oxygen was developed. is an inexpensive lixiviant used in precious metals such as silver and . Since palladium has some similar chemical properties to silver, it is believed that ...

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  • Ammonia Gold Dissolution Leaching

    Ammonia Gold Dissolution Leaching

    Processes for extraction usually depend on how is associated with its environment. Although cyanide remains the overwhelming option for the treatment ores, because of its economy and simplicity, it suffers from certain inherent drawbacks such as toxicity, low rate and its inefficiency of treating certain classes of refractory ores. Due to these limitations ...

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