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how to extract gold from telluride

Metallurgy for Recovering Gold from Telluride Ore

2016-9-7  Gold ore associated with Telluride is hardly soluble in ordinary cyanide solutions and special treatment is necessary for its extraction. There are two methods in use in such cases. ... The following is an extract from a paper by E. W. Nardin, of the Hannan’s Star Mill, Kalgoorli, published in the Mining and Scientific Press of October 24th ...

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Method to extract gold from telluride ores and concentrates

SUBSTANCE: invention relates to the field of metallurgy of non-ferrous and noble metals, in particular, to the method to extract gold from telluride ores and concentrates. Initial raw materials are treated with a solution containing 1-10 g/l of sodium sulphite, 0.1-1 mg/l of dissolved oxygen, at pH=10-11. After treatment the cake is separated ...

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Processing technologies for gold-telluride ores

2016-9-12  this gold can only be collected when the roaster is shut down [9]. These two factors are the primary concerns when roast-ing gold telluride ores. 3.1.2. Bio-oxidation A more promising method of gold telluride pre-treatment is bio-oxidation. As an alternative pre-treatment to roasting for refractory gold concentrates, its advantage lies in the

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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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how to extract gold from telluride - aubergedesrives

How To Extract Gold From Telluride. How To Extract Gold From Telluride . FOB Reference Price: Get Latest Price conditions, elution desorption of gold from the carbon occurs The main factor that makes desorption or stripping a simple process is the fact that gold will, no gold in solution and is therefore able to extract most of the remaining gold, bringing the total gold recovery for both ...

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Treatment of Gold–Telluride Ores - ScienceDirect

2016-1-1  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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Gold Extraction from Different Types of Ore

2020-1-10  Telluride gold ores generally refer to ores containing natural gold and sulfide minerals, which have high economic value. Gold extraction from this type of ore can be different, because whether this ore contains silver or not, it dissolves very slowly in

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The Chemistry of the Extraction of Gold - ResearchGate

Gold is the most noble of all the metals and this .is the key to both its eternal romance and its many practical uses in industry. ... telluride and stibnite species, AuTe

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Sulfides, Selenides and Tellurides: rebellious and ...

2012-4-18  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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How to Use Bleach on Gold Ore to Remove Gold Sciencing

2017-4-24  Gold is an almost non-reactive metal, but halogens — chlorine, bromine, fluorine and iodine — can dissolve it. Chlorine is the cheapest and lightest product that can achieve this. Bleach is the chemical compound sodium hypochlorite. When

More

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 ...

More

Treatment of Gold–Telluride Ores - ScienceDirect

2016-1-1  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.

More

Gold Extraction from Different Types of Ore

2020-1-10  Telluride gold ores generally refer to ores containing natural gold and sulfide minerals, which have high economic value. Gold extraction from this type of ore can be different, because whether this ore contains silver or not, it dissolves very slowly in

More

The Chemistry of the Extraction of Gold - ResearchGate

Gold is the most noble of all the metals and this .is the key to both its eternal romance and its many practical uses in industry. ... telluride and stibnite species, AuTe

More

Processing technologies for gold-telluride ores SpringerLink

2010-2-12  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 ...

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Assay of telluride gold ore Gold Refining Forum

2019-2-24  There is a mention of the use of 12% Nitric Solution to break down Telluride's in a reply by Deano in one of the threads. Then the use of AR to put the metals into solution so they respond to normal analytical methods.

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8 Types of Gold Ore- Properties and Ways to Process

2021-10-29  Gold mainly appears in the form of natural gold and minerals in the ore such as pyrite, tellurium ore, sphalerite, and gold in gangue, etc. About 70% to 75% of the gold in the deposit is in the form of natural gold, while the other 20% occurs in the form of telluride.

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Sulfides, Selenides and Tellurides: rebellious and ...

2012-4-18  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.

More

Comparison of different extraction methods to

2009-6-28  SUNDER RAJU: EXTRACTION METHODS TO DETERMINE GOLD IN GEOLOGICAL SAMPLES 67 sulphides, silicates and carbonates). Iron interfering with gold wavelength during analysis was overcome by back extraction of iron from the organic extract. Centrifugation of colloidal materials in the organic phase also affects aspiration of solutions in F-AAS.

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How to Use Bleach on Gold Ore to Remove Gold Sciencing

2017-4-24  Gold is an almost non-reactive metal, but halogens — chlorine, bromine, fluorine and iodine — can dissolve it. Chlorine is the cheapest and lightest product that can achieve this. Bleach is the chemical compound sodium hypochlorite. When

More

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 ...

More

(PDF) Leaching alternatives to recover gold and silver ...

Gold recovery from a mixture of gold, gold telluride, tellurium and tellurium dioxide for two cyanidation conditions: standard cyanidation (1g/L NaCN and pH = 9.5) and high cyanide concentration ...

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US2283196A - Recovery of gold from telluride ores -

gold telluride ores recovery copper Prior art date 1940-11-01 Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime Application number US363895A Inventor Colin G Fink Putnam Garth Louis ...

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Processing technologies for gold-telluride ores SpringerLink

2010-2-12  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 ...

More

Mineral Transformations in Gold–(Silver) Tellurides in the ...

Gold–(silver) telluride minerals constitute a major part of the gold endowment at a number of important deposits across the globe. A brief overview of the chemistry and structure of the main gold and silver telluride minerals is presented, focusing on the relationships between calaverite, krennerite, and sylvanite, which have overlapping compositions.

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Assay of telluride gold ore Gold Refining Forum

2019-2-24  There is a mention of the use of 12% Nitric Solution to break down Telluride's in a reply by Deano in one of the threads. Then the use of AR to put the metals into solution so they respond to normal analytical methods.

More

Selective Pre-leaching of Tellurium From Telluride-Type

2021-3-25  With a telluride-type gold ore flotation concentrate as the research object, the Na2S + NaOH collaborative leaching process was applied to selectively separate tellurium before the cyanide leaching of gold and silver. The effects of process parameters ...

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Comparison of different extraction methods to

2009-6-28  SUNDER RAJU: EXTRACTION METHODS TO DETERMINE GOLD IN GEOLOGICAL SAMPLES 67 sulphides, silicates and carbonates). Iron interfering with gold wavelength during analysis was overcome by back extraction of iron from the organic extract. Centrifugation of colloidal materials in the organic phase also affects aspiration of solutions in F-AAS.

More

Photos of gold ores, quartz, telluride gold ore and gold ...

2014-6-22  The gold telluride ores occur with silver, or with silver, lead and antimony, or as native gold accompanied by other tellurides. These ores are often sent direct to the smelters for treatment. A fifth type is the disseminated ore type. They are often low in

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Tellurides- Calaverite - any recommendations on easy test ...

2021-10-15  I found a 268 gram piece of calaverite ! Typically 40 % gold (hopefully) , but could be more silver than gold. I heard something about a sulfuric acid test .. Any suggestions would be appreciated.

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