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Gold telluride processing

Gold telluride ores are important gold refractory ores due to the presence of sulfides and other gangue materials. The classification and main physical properties of gold telluride ores were described, and possible treatment methods including flotation, leaching, and oxidation were reviewed. The results show that flotation procedures are much easier for gold tellurides compared to other

  • Processing Options for Gold-tellurides

    Processing Options for Gold-tellurides

    PROCESSING OPTIONS Unlike free gold, the gold tellurides do not undergo rapid dissolution in the conventional alkaline cyanide leach solution. Therefore, alternative treatments must be applied to break down the gold-telluride structure and release free gold. The general processing methods are: milling, flotation, leach, and oxidation. 2.1

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  • Treatment of gold-telluride ores - ResearchGate

    Treatment of gold-telluride ores - ResearchGate

    Extra processing steps, such as roasting, flotation and ultrafine grinding may be required to increase gold recovery from certain ores. For gold tellurides, ultrafine grinding and roasting of the

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  • Selective Pre-leaching of Tellurium From Telluride-Type

    Selective Pre-leaching of Tellurium From Telluride-Type

    Mar 25, 2021 The telluride leaching method of The Republic of Fiji is a classic combined processing and metallurgical treatment of telluride-type gold ore. This process first concentrates telluride-type gold ore, then follows by oxidative roasting, cyanide leaching, polysulfide leaching, sodium sulfite reduction, and other processes to recover tellurium and

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  • Method to extract gold from telluride ores and concentrates

    Method to extract gold from telluride ores and concentrates

    The recovery processing to ensure maximum decomposition telluride of gold, depends on the properties of the processed material and is determined experimentally. When using sodium sulfite as a reducing reagent concentration according to the experiments must be at least 1 g/l by increasing the concentration of sulfite most 10 g/l of a positive

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  • Roasted Gold Telluride Ore from Cripple Creek, Colorado

    Roasted Gold Telluride Ore from Cripple Creek, Colorado

    A piece of roasted gold ore from Cripple Creek, Colorado. You will notice that the gold is formed into an almost bubbly showing on the surface. This was a result of a roasting process that was commonly used in this part of Colorado to process the telluride-rich ores from the mines. This caused most of the Telluride minerals (calaverite

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  • CALAVERITE (Gold Telluride)

    CALAVERITE (Gold Telluride)

    Chemistry: AuTe 2, Gold Telluride. Uses: A very minor ore of gold and tellurium and as mineral specimens. Calaverite is an uncommon and much sought after mineral by mineral collectors and those seeking fortunes. Calaverite is one of the few minerals that is an ore of gold, besides native gold itself. It is the most common gold bearing mineral

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  • Gold Tellurides | TreasureNet

    Gold Tellurides | TreasureNet

    Mar 31, 2015 The more common gold-bearing tellurides are sylvanite ( (Au, Ag)Te4), calaverite ( (Au, Ag), Te2) and petzite ( (Au, Ag3)Te2) with krennerite (Au4 Ag Te4) and montbroyite (Au2 Te3) less common. Gold tellurides occurrence is widespread and is often associated with some free gold and sulphide minerals

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  • Sulfides, Selenides and Tellurides: rebellious and

    Sulfides, Selenides and Tellurides: rebellious and

    Calaverite - Gold Telluride This sad story was repeated all over the Western US and actually all across the world. Over the years, miners worked to develop new ways to handle these difficult ores, and they made progress as time went on, but even cyanide doesn't normally do as well in processing sulfide ores without some special efforts

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  • (PDF) Process mineralogy of gold: gold from Telluride

    (PDF) Process mineralogy of gold: gold from Telluride

    Paul G. Spry, Stephen Chryssoulis, and Christopher G. Ryan. Gold Process Mineralogy II. Research Summary. Petrographic and microanalytical. studies of gold in gold-silver telluride. deposits show

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  • Identification of Tellurides - Mineralogical Society of

    Identification of Tellurides - Mineralogical Society of

    The most satisfactory method of identification of the tellurides is by means of chemical and etch tests on polished sections of ores under the reflecting microscope. The technique and application of this method are fully described by Short. 1 In his systematic scheme of identification the unknown is first treated with standard etch reagents

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  • Our Process « TCB Metals and Refining

    Our Process « TCB Metals and Refining

    0:00 / 4:10 •. Live. •. TCB International’s ore processing capabilities enable us to extract precious metals from ore concentrates, black sands, sulfide ores, and telluride ores at a high rate of recovery due to several factors. Our in house lab thoroughly tests your ore for precious metal recovery using fire assays and leach tests on

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  • Scientists propose new ‘salty’ non-toxic gold extraction

    Scientists propose new ‘salty’ non-toxic gold extraction

    Oct 16, 2021 The new process is based on the use of chloride, one of two elements in table salt, for the leaching and recovery of the yellow metal. “With our process, the amount of gold we’ve been able to

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  • Processing technologies for gold-telluride ores | SpringerLink

    Processing technologies for gold-telluride ores | SpringerLink

    Feb 12, 2010 Gold telluride ores are important gold refractory ores due to the presence of sulfides and other gangue materials. The classification and main physical properties of gold telluride ores were described, and possible treatment methods including flotation, leaching, and oxidation were reviewed. The results show that flotation procedures are much easier for gold tellurides compared to other

    Get Price
  • Metallurgy for Recovering Gold from Telluride Ore

    Metallurgy for Recovering Gold from Telluride Ore

    Sep 07, 2016 This process was used at the Deloro mine, Ontario, Canada, on a mispickel ore, and was developed in Australia by Dr. Diehl for the treatment of the sulpho-telluride ores of the Kalgurli district. The process essentially consists of grinding exceedingly fine, and then agitating with cyanide solution to which bromide of cyanogen is added at

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  • Process mineralogy of gold: Gold from telluride-bearing

    Process mineralogy of gold: Gold from telluride-bearing

    Petrographic and microanalytical studies of gold in gold-silver telluride deposits show that it occurs as “visible gold” extracted by cyanidation, and as visible gold and “invisible gold” that are unamenable to cyanidation. Two gold-bearing tellurides, calaverite and buckhornite, are considerably less amenable to cyanidation in comparison to Au-Ag tellurides. Secondary ion mass

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  • Treatment of Gold–Telluride Ores - ScienceDirect

    Treatment of Gold–Telluride Ores - ScienceDirect

    Jan 01, 2016 A hydrometallurgical treatment method for the leaching of gold telluride along with the production of tellurium metal was devised at Emperor Gold Mine (Cornwall and Hisshion, 1976). The process (called the Emperor Process) used a basic hypochlorite (i.e., chlorine) solution to oxidize a high-grade gold telluride concentrate produced from flotation

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  • Telluride - an overview | ScienceDirect Topics

    Telluride - an overview | ScienceDirect Topics

    S. Ellis, G. Desch nes, in Gold Ore Processing (Second Edition), 2016 Abstract. Gold telluride ores, treated commercially in various regions in the world, most notably Kalgoorlie, Western Australia; Vatukoula, Fiji; Cripple Creek, Colorado, and Kirkland Lake, Ontario, exhibit slow leaching kinetics. There are many telluride mineral species and the most common gold bearing varieties include

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