• Gold(I) sulfide WikiMili, The Free Encyclopedia

    27/10/2019· Copper(I) sulfide is a copper sulfide, a chemical compound of copper and sulfur It has the chemical compound Cu 2 S It is found in nature as the mineral chalcocite It has a narrow range of stoichiometry ranging from Cu 1997 S to Cu 2000 S

  • (PDF) Recovering gold from copper concentrate via the

    Cupric chloride leaching of gold has also been investigated as a following step for copper sulfide leaching processes such as Intec (Moyes, 2002), HydroCopper™ ( Haavanlammi et al, 2007), and

  • Gold corrosion

    Under atmospheric conditions, copper and silver react with reduced sulfurcontaining gases, mainly hydrogen sulfide (H 2 S) and carbonyl sulfide (COS), to form copper sulfide (Cu 2 S) and silver sulfide (Ag 2 S), respectively These sulfides grow through pores and produce dark spots that can spread over the gold surface Copper sulfide spreads at a slower rate than silver sulfide Copper is

  • Sulphide Mineral Indicators For Gold – BC Gold Adventures

    The main sulfide ore of copper throughout the world And where’s there’s copper there’s usually some silver or gold found along with it Chalcopyrite is typically a brassy yellow in color and when exposed to the elements loses its metallic luster Its surface then becomes rough or granular Sometimes chalcopyrite can have an iridescent look with multiple colors across its surface which

  • What is Sulfide Mining? | Mining Action Group

    Metallic sulfide mining (aka hard rock mining) is the practice of extracting metals such as nickel, gold and copper from a sulfiderich ore body Sulfides are a geologic byproduct of mining in this area, and by exposing sulfides to the air and water in our atmosphere, sulfuric acid can be created — threatening to poison the nearby water

  • Gold and native copper in supergene sulphides from

    05/05/1988· The high gold grades and native copper associated with secondary Cusulphides resemble occurrences in some supergene gossans overlying ancient massive sulphide

  • (PDF) Recovering gold from copper concentrate via the

    Cupric chloride leaching of gold has also been investigated as a following step for copper sulfide leaching processes such as Intec (Moyes, 2002), HydroCopper™ ( Haavanlammi et al, 2007), and

  • Facile synthesis of goldsilver/copper sulfide

    15/03/2021· Metal sulfides as copper chalcogenides depict unique optical, electronic, physical and chemical properties for the photocatalysis process Moreover, Au and Ag NPs is one of the metallic nanoparticles for photocatalytic system due to its stability against photocorrosion The several catalyst were prepared in recently projects such as, Ni/CuS

  • Gold corrosion

    Under atmospheric conditions, copper and silver react with reduced sulfurcontaining gases, mainly hydrogen sulfide (H 2 S) and carbonyl sulfide (COS), to form copper sulfide (Cu 2 S) and silver sulfide (Ag 2 S), respectively These sulfides grow through pores and produce dark spots that can spread over the gold surface Copper sulfide spreads at a slower rate than silver sulfide Copper is

  • A Comparative Study of Hollow Copper Sulfide

    Gold and copper nanoparticles have been widely investigated for photothermal therapy of cancer However, degradability and toxicity of these nanoparticles remain concerns Here, we compare hollow CuS nanoparticles (HCuSNPs) with hollow gold nanospheres (HAuNS) in similar particle sizes and morphology following intravenous administration to mice The injected pegylated HCuSNPs (PEG

  • Sulfide Gold/Copper Extraction | Samuel Engineering

    Sulfide Gold/Copper Extraction Turkey << Back to Mining & Minerals Projects Project Highlights Feasibility design and NI 43101 input; 8,000 metric tonnes per day sulfide processing expansion to an existing 15,000 metric tonnes per day oxide heap leach; Remote site location introduced challenges for power and equipment delivery ; Services Feasibility Level Engineering – Process, piping

  • The Mount Morgan goldcopper mine and environment

    The Mount Morgan mine was closed in July 1981, having yielded 237,896 kg of gold (7,648,533 oz) and 360,616 metric tons of copper from 50 million metric tons of ore, an average recovered grade of 475 g/metric ton Au and 072 percent Cu It has been Australia's largest single lode gold orebody and is the fourth largest goldproducing area after the Kalgoorlie Golden Mile and the Bendigo and

  • How to improve copper & gold recovery to copper

    I have been given a project on optimization of copper concentrate grade so as to improve copper and gold recovery I need help on the main factors which I have to consider in my project The targeted copper concentrate grade at the plant is 18 20%Cu, but currently the target is not achieved The p

  • Innovations in Copper: Mining & Extraction: Producing

    In biooxidation of refractory gold ores bacteria are used to oxidize, and therefore make soluble, an iron sulfide matrix in which the gold particles are imbedded and thus make the gold available for cyanide leaching Likewise, in coal desulfurization, bacteria are used to oxidize the pyrite contaminant in the coal thus making the sulfur soluble as ferric sulfate Since bioleaching is a natural

  • How to Test If Something is Gold or Copper | Our Pastimes

    12/04/2017· A gold test kit will tell you if a piece of metal is gold or copper Score a halfinch line on the flat black test stone provided in the gold test kit by rubbing the edge of the metal up and down against its surface two or three times This will leave a thin line of metal particles embedded in the stone Place a small droplet of acid from the squeeze bottle bottle marked "14 karat" on one end

  • Gold and native copper in supergene sulphides from

    05/05/1988· The high gold grades and native copper associated with secondary Cusulphides resemble occurrences in some supergene gossans overlying ancient massive sulphide

  • Meridian Mining Drills Strong Sulphide Mineralization at

    2 天前· The mineralization style seen in sulphiderich basal layer corresponds to the characteristics of the target corridor identified in the 1990 Mason and Kerr study, which interpreted the position as part of a major NWSE trending alteration pipe of higher grade coppergoldsilver mineralization Additional drilling geophysics will be undertaken to trace the extent of this position towards the

  • Establishing thE ProcEss MinEralogy of gold orEs

    5 Copper sulfide ores Gold occurs as coarse liberated particles and fine particles locked in pyrite and copper sulfides Grasberg and Batu Hijau (all in Indonesia), Bulyanhulu (Tanzania), Oyu Tolgoi (ie Turquoise Hill) (Mongolia) 6 Iron sulfide ores Gold occurs as liberated particles, attachments to and inclusions in sulfide (commonly in pyrite, and less commonly in marcasite and pyrrhotite

  • (PDF) A Comparative Study of Hollow Copper Sulfide

    20/09/2013· A Comparative Study of Hollow Copper Sulfide Nanoparticles and Hollow Gold Nanospheres on Degradability and Toxicity September 2013 ; ACS Nano 7(10) DOI: 101021/nnw Source; PubMed

  • Sulfide Gold/Copper Extraction | Samuel Engineering

    Sulfide Gold/Copper Extraction Turkey << Back to Mining & Minerals Projects Project Highlights Feasibility design and NI 43101 input; 8,000 metric tonnes per day sulfide processing expansion to an existing 15,000 metric tonnes per day oxide heap leach; Remote site location introduced challenges for power and equipment delivery ; Services Feasibility Level Engineering – Process, piping

  • The Mount Morgan goldcopper mine and environment

    The Mount Morgan mine was closed in July 1981, having yielded 237,896 kg of gold (7,648,533 oz) and 360,616 metric tons of copper from 50 million metric tons of ore, an average recovered grade of 475 g/metric ton Au and 072 percent Cu It has been Australia's largest single lode gold orebody and is the fourth largest goldproducing area after the Kalgoorlie Golden Mile and the Bendigo and

  • Anglo Asian Mining plc 20/521 Yard Huseyn Javid Avenue

    transition and sulphidic gold and copperbearing ores Gold in the sulphide ores is generally not refractory and is recoverable by cyanide leaching, but the secondary copper minerals, which are also cyanide soluble, lead to high cyanide consumptions Ore processing at Gedabek is by agitation leaching for high grade ore (>1g Au/t) and heap leaching for lower grade ore In order to cope with the

  • How to improve copper & gold recovery to copper

    I have been given a project on optimization of copper concentrate grade so as to improve copper and gold recovery I need help on the main factors which I have to consider in my project The targeted copper concentrate grade at the plant is 18 20%Cu, but currently the target is not achieved The p

  • Innovations in Copper: Mining & Extraction: Producing

    In biooxidation of refractory gold ores bacteria are used to oxidize, and therefore make soluble, an iron sulfide matrix in which the gold particles are imbedded and thus make the gold available for cyanide leaching Likewise, in coal desulfurization, bacteria are used to oxidize the pyrite contaminant in the coal thus making the sulfur soluble as ferric sulfate Since bioleaching is a natural

  • Copper Sulphide Ore Reagents For Copper Flotation

    Alkaline flotation of copper sulphide nkvfregio20froth flotation is widely used for the treatment of base metal sulphides, and relies on the differences in surface chemistry between valuable sulphide minerals and gangue minerals (xian et al, 2015b, ejtemaei and nguyen, 2017)pyrite (fes 2) and other sulphide minerals are closely associated with each other in most copper ores, and their

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