copper sulfide bearing gold concentration

copper sulfide bearing gold concentration

  • Effectiveness acidic precleaning for coppergold ore SciELO

    The presence of copperbearing minerals is known to bring on many challenges during the cyanidation of gold ore, like high consumption of cyanide and low Copper is one of these metals, being able to reach concentrations as high as 1,000mg/L. When the cyanide solution contains a high concentration of copper, 

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  • Invisible and microscopic gold in pyrite: Methods and new data for

    The portion of gold structurally bound in pyrite lattice (from the bulk concentration of Au in pyrite) is estimated to be from few % (the Galkinsk deposit) to for the Galkinsk deposit) and (2) the high portion of "invisible" gold in the massive sulfide ores, which explains the low yield of Au in copper and zinc concentrates, since it 

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  • A Review of the Geochemical Characteristics of Gold in Ore Deposits

    lines, and Haycock suggested that the concentration of gold was less than 3 ozs,/ton pyrite (the limit of detectability) . Blomfield and co workers independently Íound the average concentrate to contain molybdenum sulphide, carbon, lead, zinc, copper, iron, tellurium, sulphur, arsenic and gold. Elements associated with the 

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  • Management of SulfideBearing Waste, a Challenge for the MDPI

    Feb 8, 2012 average copper concentration of less than 1%, resulting in that more than 99% of the ore will be waste after processing [4]. Gold is mined in deposits with a grade as low as a few grams per tons [5]. These examples show that the major parts of ores thus will be waste. In some mines, large amounts of wall.

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  • Gold extraction Wikipedia

    Froth flotation is usually applied when the gold present in an ore is closely associated with sulfide minerals such as pyrite, chalcopyrite or arsenopyrite, and when such sulfides are present in large quantities in the ore. In this case, concentration of the sulfides results in concentration of gold 

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  • Pretreatment of a Copperrich Gold Ore (PDF Download Available)

    Jun 29, 2015 ence/absence of hydrogen peroxide for the removal of copper as a pretreatment process prior to cya. nide leaching of a copper sulphide bearing gold ore. Direct cyanide leaching of the ore with air result. ed in a low extraction of gold (i.e. 6.7 % at 1.5 g/L NaCN over 24 h). High concentration of cyanide.

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  • determination of gold in copperbearing sulphide Science Direct

    Apr 15, 1974 Various methods of concentration have been reported these have included coprecipitation with tellurium,' selenium' or extraction into organic solventssuchasmethyl isobutyl ketone (MIBK). 3,4 Metallurgical testwork in this laboratory on copperbearing sulphide ores necessitated the development of a rapid 

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  • Gold Solubility in Arc Magmas: Experimental HALInsu

    Apr 2, 2012 the source of gold, in presence of variable amounts of H2O and ∼1 wt.% of elemental sulfur. (S). Concentrations of Au in glasses were determined by laserablation inductivelycoupled plasma mass spectrometry (LAICPMS). Gold solubility in Sbearing melts is drastically enhanced compared to Sfree 

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  • Sulfur radical species form gold deposits on Earth PNAS

    Nov 3, 2015 gold sulfur ore deposit hydrothermal fluid trisulfur ion. The formation of gold deposits on Earth (pH), redox potential (fO2), and salt and sulfur concentrations (1, 5,. 6, 13, 15). In addition, other minor . 3 bearing gold species, and its simulated XAS spectrum provides a good match to the experimental 

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  • Treatment of a refractory gold—copper sulfide concentrate by

    The potential for leaching gold directly from a refractory Au Cu sulfide concentrate, to replace the current treatment of roasting and cyanidation, was investigated using ammoniacal thiosulfate with copper. Leaching the concentrate with a solution containing 0.8M S2O32−, 0.05M Cu2+ and 4M NH3 resulted in over 90% gold 

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  • The genesis of metal resources : Nature Geoscience

    High gold concentrations in sulphidebearing magma under oxidizing conditions . Roman E. Botcharnikov, Robert L. Linnen, Max Wilke, Francois Holtz, Pedro J. Jugo & Jasper Berndt. doi :10.1038/ngeo1042. Magma transports metals to the Earth's surface to form ore deposits, but only sulphideundersaturated magmas 

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  • Pretreatment of a Copperrich Gold Ore (PDF Download Available)

    Jun 29, 2015 ence/absence of hydrogen peroxide for the removal of copper as a pretreatment process prior to cya. nide leaching of a copper sulphide bearing gold ore. Direct cyanide leaching of the ore with air result. ed in a low extraction of gold (i.e. 6.7 % at 1.5 g/L NaCN over 24 h). High concentration of cyanide.

    >>Details
  • Determination of gold in copperbearing sulphide ores and NCBI

    Determination of gold in copperbearing sulphide ores and metallurgical flotation products by atomicabsorption spectrometry. Strong B(1), MurraySmith R. Author information: and the gold determined by atomicabsorption spectrometry. No interferences were observed from large concentrations of copper, iron or nickel.

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  • Determination of gold in copperbearing sulphide ores and NCBI

    Determination of gold in copperbearing sulphide ores and metallurgical flotation products by atomicabsorption spectrometry. Strong B(1), MurraySmith R. Author information: and the gold determined by atomicabsorption spectrometry. No interferences were observed from large concentrations of copper, iron or nickel.

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  • Treatment of a refractory gold—copper sulfide concentrate by

    The potential for leaching gold directly from a refractory Au Cu sulfide concentrate, to replace the current treatment of roasting and cyanidation, was investigated using ammoniacal thiosulfate with copper. Leaching the concentrate with a solution containing 0.8M S2O32−, 0.05M Cu2+ and 4M NH3 resulted in over 90% gold 

    >>Details
  • Sulfide Mining Overview Save Our Sky Blue Waters

    remove metals, such as copper, nickel, platinum and others, from sulfur bearing ores. The. 1 Hudson, T.L. the economic feasibility of mining ores with even lower concentrations is likely to increase. For example, the .. For example, Sulfide mining in the Madneuli CopperGold openpit mine in Georgia has caused heavy 

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  • gold and pge in massive sulfide ore of the uzelginsk deposit RRuff

    Gold and PGE concentrations in sulfides from the Uzelginsk deposit have been deter mined by instrumental Sphalerite bearing finegrained emulsionlike inclusions of chalcopyrite contains 1.8 to 10.6 ppm Au. The gold content of pure . recovery of gold in copper and zinc concentrates ranges from 20–25% (Uchaly) up 

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  • WO2012053915A1 A process of gold and copper recovery from

    The present invention relates to a process of gold and copper recovery from goldcontaining copper ores obtained from mixed oxidesulfide copper ore bodies by a series of flotation Direct cyanidation of gold bearing ore generates tons of waste materials containing cyanide which can constitute an environmental hazard.

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  • Copper Earth Resources

    Dec 1, 2015 In Victoria, copperbearing ores have been discovered in a variety of geological environments. These include deposits of exhalative volcanogenic origin, sulphide–quartz lodes in Ordovician sedimentary rocks, deposits associated with dykes and granites, and concentrations in chemically reduced 

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  • Management of SulfideBearing Waste, a Challenge for the MDPI

    Feb 8, 2012 average copper concentration of less than 1%, resulting in that more than 99% of the ore will be waste after processing [4]. Gold is mined in deposits with a grade as low as a few grams per tons [5]. These examples show that the major parts of ores thus will be waste. In some mines, large amounts of wall.

    >>Details
  • SART for copper control in cyanide heap leaching

    Generally, heap leach operators like to keep copper concentrations in solution below 300500 ppm and may note problems with gold recovery and cyanide consumption SART involves acidifiion with addition of soluble sulphide, separation of the resulting copper sulphide precipitate, and addition of lime to reestablish 

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  • Silver processing Britannica

    Silver is generally found in the combined state in nature, usually in copper or lead mineralization, and by 2000 bce mining and smelting of silverbearing lead ores Since virtually all the ores are sulfides, they are amenable to flotation separation, by which a 30 to 40fold concentration of mineral values is usually achieved.

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  • Gold Solubility in Arc Magmas: Experimental HALInsu

    Apr 2, 2012 the source of gold, in presence of variable amounts of H2O and ∼1 wt.% of elemental sulfur. (S). Concentrations of Au in glasses were determined by laserablation inductivelycoupled plasma mass spectrometry (LAICPMS). Gold solubility in Sbearing melts is drastically enhanced compared to Sfree 

    >>Details
  • Outotec and sustainability

    Gold collected from stream beds (8000 BC). • Washing of alluvial gold (before 3500 BC). • Mining of gold (3500 BC). • Smelting (3000 BC). • Cupellation to separate other metals from goldsilver alloys (2000 BC). • Parting to separate silver from gold (600 BC). • Amalgamization (100 BC). • Leaching with aqua regia (700 AC).

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  • Geology: What is a Mineral Deposit? — Mining Focus

    A mineral is a naturally occurring chemical compound. Metals rarely occur in their pure ("native") form, but are formed in nature combined with sulphur as minerals called sulphides or oxygen as minerals called oxides. An exception is gold which occurs in its pure metallic form, which is why it was the first metal discovered 

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  • The formation of economic porphyry copper (–gold

    Although the halite (Na peak) and the Aubearing copper sulphide daughter crystals (overlapping Au and Cu spikes) are clearly resolved from the broader Na and Cu signals originating from the elements dissolved in the aqueous liquid, time integration of element intensities and calibration using an external standard yields 

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  • QuartzTourmaline Veins in the Northern Sierra Nevada Area

    Tourmalinebearing quartz veins and replacement deposits, commonly copper and goldbearing, are found in unusual concentration in northwestern Nevada and Many copperbearing quartz tourmaline veins contain appreciable gold ñ silver, but early miners were commonly discouraged by the difficulttotreat sulfide 

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  • Sulfur radical species form gold deposits on Earth PNAS

    Nov 3, 2015 gold sulfur ore deposit hydrothermal fluid trisulfur ion. The formation of gold deposits on Earth (pH), redox potential (fO2), and salt and sulfur concentrations (1, 5,. 6, 13, 15). In addition, other minor . 3 bearing gold species, and its simulated XAS spectrum provides a good match to the experimental 

    >>Details
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