pretreatment of refractory gold ore

  • ALTA Gold 2012 EDoc Albion Process

    different methods of pretreatment were prepared and these estimated costs and ore sulfide grades then used to compare the process economics. The Study involved the following activities Review existing mineralogy and testwork data. Review possible refractory gold flowsheets. Conduct a preliminary comparative assessment of the options.

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  • The Oxidation Pretreatment of a Sulfidic Refractory Gold

    An attempt has been made to study the pretreatment of sulfidic refractory gold ore with pyrolusite. The influences of various parameters were studied to optimize the conditions. The optimum leaching conditions were pyrolusite/gold ore mass ratio of 3.0 H2SO4 concentration of 3.0 M temperature of 100°C particle size of 45μm stirring speed of 200 rpm.

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  • Treatment of Refractory Gold Ores XPS

    Treatment of Refractory Gold Ores Extractive Metallurgy Once the cause has been identified there are a number of alternatives for treating the ore. Firstly the gold can be made more amenable to cyanidation by ultrafine milling followed by a hot atmospheric leach the Albion Process.

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  • Pretreatment of a refractory arsenopyritic gold ore using

    An arsenopyrite refractory ore was pretreated with NaOH to increase gold extraction. After pretreatment gold and silver were leached with copper ammonium thiosulfate solution. Thiosulfate leaching of the asreceived ore extracted only 21% and 29% of silver and gold respectively.

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  • Refractory Gold Ore Treatment Methods

    Metallurgical ContentGold Leaching Processing of Arsenic OreMispickel (Arsenopyrite FeAsS).6Leaching and Recovering Gold from Antimony MineralsStibnite (Antimony Sulphide Sb2S2)Telluride Gold Ore ProcessingSolubility of TelluridesGold Extraction from Carbonaceous OreList Gold Refractory Process Methods Where gold is associated with arsenic antimony tellurium and

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  • Pretreatment of a refractory arsenopyritic gold ore using

    An arsenopyrite refractory ore was pretreated with NaOH to increase gold extraction. After pretreatment gold and silver were leached with copper ammonium thiosulfate solution. Thiosulfate leaching of the asreceived ore extracted only 21% and 29% of silver and gold respectively.

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  • Pretreatment Process on Refractory Gold Ores with As

    1. Introduction. Gold ores are considered refractory if gold extractions from a conventional cyanidation process are less than 80% even after fine grinding. 1) Arsenicbearing refractory gold ore has stones extremely difficult to deal with. In the stones gold is locked up in arsenic mineral matrix as the form of microscopic or submicroscopic lattice.

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  • Pretreatment Process on Refractory Gold Ores with As

    Gold ores are considered refractory if gold extractions from a conventional cyanidation process are less than 80% even after fine grinding. 1) Arsenicbearing refractory gold ore has stones extremely difficult to deal with. In the stones gold is locked up in arsenic mineral matrix as the form of microscopic or submicroscopic lattice.

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  • A Preliminary Study on Nitric Acid Pretreatment of

    A Preliminary Study on Nitric Acid Pretreatment of Refractory Gold/silver Ores A Preliminary Study on Nitric Acid Pretreatment of Refractory Following aeration pretreatment the ore is

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  • Implementation of sodium hydroxide pretreatment for

    Alkaline pretreatment of a refractory goldsilver ore containing antimony minerals such as stibnite andorite (Sb3PbAgS6) and zinkenite (Pb9Sb22S42) was tested using sodium hydroxide in order to

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