extracted gold from ore by the thiosulfate

Barrick Thiosulfate Leaching of Double Refractory Ore

When this reaction happens, the gold that is locked within the carbon ore will not be extracted, and will be disposed of in the tailings, creating loss Roasting can remove the carbon present in the ore, but autoclaves cannot autoclaves can only remove the sulfides The thiosulfate gold

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PDF Ammoniacal thiosulfate leaching of gold from a

Extraction of gold and silver from Turkish gold ore by ammoniacal thiosulphate leaching, Mineral Processing and Extractive Metallurgy Review, 29, 68 82 Aylmore, M G and Muir, D M , 2001 Thiosulfate leaching of gold A review, Minerals Engineering, 14 2, 135 174

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Gold leching from a Saudi ore by the nonpolluting

In all working Saudi gold mines, ores are treated using the hazardous cyanidation process Some Saudi gold ores, such as Al Amar, is known to be refractory to cyanidation In this work, we have examined the extraction of gold from Al Amar gold ore by the much environmentally safer and efficient thiosulfate process

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Thiosulfate leaching of gold A review Request PDF

The ammoniacal thiosulfate leaching process for gold and silver extraction has been reviewed in terms of leaching mechanism, thermodynamics, thiosulfate stability, and gold recovery options

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Gold has been extracted from carbonaceous ore by using

Jan 24, 2019 Gold has been extracted from carbonaceous ore by using cyanide, a chemical which is highly toxic to organisms, since 1887 Conversely, a less toxic method to extract gold from carbonaceous ores was researched and developed, utilising knowledge from the 1970s and further refining the information to achieve the desired outcome This new method uses thiosulfate,

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Treatment of a Polysulphide Ore by Ammoniacal Thiosulfate

Treatment of a Polysulphide Ore by Ammoniacal Thiosulfate Solutions and Ion Flotation for Gold Recovery 84 were added up to the iodine solution became colorless The spent sample volume was measured for determining the amount of thiosulfate that was needed to add into the pulp Once an experiment finished, the pulp was filtered in a press filter

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Gold has been extracted from carbonaceous ore by using

Gold has been extracted from carbonaceous ore by using cyanide, a chemical which is highly toxic to organisms, since 1887 Conversely, a less toxic method to extract gold from carbonaceous ores was researched and developed, utilising knowledge from the 1970s and further refining the information to achieve the desired outcome

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ammonium thiosulfate for gold in situ extraction project

can sodium thiosulfate be used for the extraction of Leach Gold using Hyposulphite Of Sodium AKA Thiosulfate Gold Extraction These solutions have very little solving action upon the natural sulphide contained in goldbearing ore, and should be suitable solutions for the treatment of gold or silver ore, as they have a greater solving power than cyanide of potash, are not poisonous,

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gold extraction process by thiosulfate

Gold and silver extraction by ammoniacal thiosulfate title = quotGold and silver extraction by ammoniacal thiosulfate leaching from a rhyolite orequot, abstract = quotAn investigation has been carried out to identify the parameters of importance in the dissolution of gold and silver values from an ore using ammoniacal thiosulfate solutions containing copper

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CN101760628B Thiosulfate gold extracting method taking

The invention provides a thiosulfate gold extracting method taking diethylenetriamine as an additive, which is characgerized by comprising the following steps of: adding 0 03 3 mol/dm<3 of thiosulfate leaching agents to ore pulp which is subjected to wet grinding and has the mass concentration of 40 percent by water volume then adding a diethylenetriamine and copper II coordination ion

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thiosulfate leaching of gold from ores

Two models were generated from the data for predicting gold extraction and low thiosulfate consumption within the experimental region The models predicted 90pct gold extraction and a consumption of 0 2 Kg s2o2 3/t ore at 0 20M s2o23, 0 00625M so23, 0 001 M cu2+, 0 09M nh4oh, and leaching for 48 h Get Price

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Extracting Gold From Gold Ore

Extraction of gold from refractory gold ore using bromate Jun 01, 2019· The gold extraction rate for raw gold ore under optimum conditions 0 25 M potassium bromate, 0 08 M ferric chloride, 0 4 M hydrochloric acid, extraction time of 5 min, stirring speed of 250 rpm, and liquid to solid ratio of 5 was 94 5

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Gold and silver extraction by ammoniacal thiosulfate

Gold and silver extraction by ammoniacal thiosulfate leaching from a rhyolite ore Hydrometallurgy, 19: 361 375 An investigation has been carried out to identify the parameters of importance in the dissolution of gold and silver values from an ore using ammoniacal thiosulfate solutions containing copper

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Extraction of Gold and Copper from a Gold Ore Thiosulfate

The extraction of gold from thiosulfate solutions with amine oxide and its mixture with amines has been studied, the results show that the amine oxide TRAO has a higher extraction ability for

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extracted gold from ore by the thiosulfat

extracted gold from ore by the thiosulfat extracted gold from ore by the thiosulfat_GOLD LECHING FROM A SAUDI ORE BY THE almost 70 of gold could be extracted at 0 2 M investigation is important to be Thiosulfate Leaching as an Alternative to Cyanidation , Thiosulfate Leaching as an Alternative to Cyanidation by aflacglobal in Types

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GOLD LECHING FROM A SAUDI ORE BY THE NONPOLLUTING

leaching in the ammoniacal thiosulfate solution Gold leaching drastically decreased as the concentration of copperII increased 0 2 mM due to the degradation of S 2 O 3 2 Keywords: gold, extraction, leaching, thiosulfate, Saudi ore Introduction Gold dissolution in an alkaline cyanide solution was first reported by Elsner in 1846

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thiosulfate leaching of gold from ores

Two models were generated from the data for predicting gold extraction and low thiosulfate consumption within the experimental region The models predicted 90pct gold extraction and a consumption of 0 2 Kg s2o2 3/t ore at 0 20M s2o23, 0 00625M so23, 0 001 M cu2+, 0 09M nh4oh, and leaching for 48 h Get Price

Get Price

Gold has been extracted from carbonaceous ore by using

Jan 24, 2019 Gold has been extracted from carbonaceous ore by using cyanide, a chemical which is highly toxic to organisms, since 1887 Conversely, a less toxic method to extract gold from carbonaceous ores was researched and developed, utilising knowledge from the 1970s and further refining the information to achieve the desired outcome This new method uses thiosulfate,

Get Price

Sodium Thiosulphate Gold Leaching

The gold industry has been seeking alternative reagents for leaching gold from low grade ores for the past 25 years The cost and transport of cyanide, the poor recovery of gold from carbonaceous ores, the lack of selectivity of cyanide towards copper minerals and the cost of waste treatment are real factors which can make cyanide unattractive in some circumstances

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The role of ligands and oxidants in thiosulfate leaching

Effect of additives on non ammoniacal gold extraction, thiosulfate consumption polythionates formation during leaching of a carbonaceous ore with 0 1 M Na 2S 2O 3, 100 psig O 2, at pH 11 12, and pulp density 33 over 6hRef 19 Gold extraction in the absence of additives was 82 83 , S described in text Au Extraction

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Effect of additives on thiosulfate leaching of a gold ore

ore Thiosulfate and gold thiosulfate species interact with the mineral particles especially sulfide minerals as well as carbonaceous matter, causing instability of the gold thiosulfate species Addition of EDTA increased gold recovery but reduced the initial kinetics This effect became more noticeable with increased EDTA concentration up to

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Gold recovery from refractory gold concentrates by

be exposed Mohammadi et al investigated ammoniacal thiosulfate leaching of refractory oxide gold ore, and they obtained maximum gold extraction of 55 Mohammadi et al , 2017 Shen et al had researched the direct thiosulfate leaching of gold from refractory ore, and they achieved gold recovery of only 70 Shen et al , 2013

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Cyanidation carbon in pulp gold extraction process

Jan 04, 2018 Gold extraction with BORAX for small scale miners Recovering 2 3 times more gold using our shaker table than sluices Duration: Rock gold ore

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PROCESS OF EXTRACTING GOLD AND SILVER FROM ORES

Feb 16, 2017 According to the patent no US 2003/0051581, the solubilization of gold in ores is carried out with a solution of 0 1 m ammonium thiosulfate and 0 5 g/l Cu 2+, and extraction of metals gold, silver and copper from the solution is carried out by absorption on ion exchange resinsIRA 93, IRA 400 The concentration of gold in the resin may

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Effect of additives on thiosulfate leaching of a gold ore

ore Thiosulfate and gold thiosulfate species interact with the mineral particles especially sulfide minerals as well as carbonaceous matter, causing instability of the gold thiosulfate species Addition of EDTA increased gold recovery but reduced the initial kinetics This effect became more noticeable with increased EDTA concentration up to

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Gold strike with thiosulphate MINING COM

Within the tanks, the slurry interacts with thiosulfate and a fine, bead like material called resin that collects the gold At full capacity, 13,400 tons of ore can be processed daily, with

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Gold and silver extraction by ammoniacal thiosulfate

title = Gold and silver extraction by ammoniacal thiosulfate leaching from a rhyolite ore, abstract = An investigation has been carried out to identify the parameters of importance in the dissolution of gold and silver values from an ore using ammoniacal thiosulfate solutions containing copper

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CN101824545A Method for extracting gold from thiosulfate

The invention relates to a method for extracting gold from thiosulfate adopting ethanediamine as an additive The method comprises the following steps that: the ethanediamineas is adopted as ligand and forms ethanediamine copper II complex ion with copper II ion, the formed ethanediamine copper II complex ion is used as the additive, and the thiosulfate is used as a leaching agent and is

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thiosulfate gold extraction

thiosulfate leach of gold plate Feb 24, 2014 recovered powders from a sodium thiosulfate leach of gold plated pins if all Gold extraction with BORAX for small scale miners Rather Rich More details » Get Price

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GOLD LECHING FROM A SAUDI ORE BY THE NONPOLLUTING

leaching in the ammoniacal thiosulfate solution Gold leaching drastically decreased as the concentration of copperII increased 0 2 mM due to the degradation of S 2 O 3 2 Keywords: gold, extraction, leaching, thiosulfate, Saudi ore Introduction Gold dissolution in an alkaline cyanide solution was first reported by Elsner in 1846

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PDF Ammoniacal thiosulfate leaching of gold from a

Extraction of gold and silver from Turkish gold ore by ammoniacal thiosulphate leaching, Mineral Processing and Extractive Metallurgy Review, 29, 68 82 Aylmore, M G and Muir, D M , 2001 Thiosulfate leaching of gold A review, Minerals Engineering, 14 2, 135 174

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Leach Gold using Hyposulphite Of Sodium AKA Thiosulfate

Thiosulfate Gold Extraction Leach These solutions have very little solving action upon the natural sulphide contained in gold bearing ore, and should be suitable solutions for the treatment of gold or silver ore, as they have a greater solving power than cyanide of potash, are not poisonous, and can be obtained in very large quantities at a

Get Price

Gold Extraction in Carbonaceous Ore using Thiosulfate

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Gold extraction

Gold extraction refers to the processes required to extract gold from its ores This may require a combination of comminution, mineral processing, hydrometallurgical, and pyrometallurgical processes to be performed on the ore Gold mining from alluvium ores was once achieved by techniques associated with placer mining such as simple gold panning and sluicing, resulting in direct recovery of

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Gold Cementation from Ammonium Thiosulfate Solution

Ammonium thiosulfate leaching is an alternative gold ex traction method to cyanidation because of its low toxicity 17 However, the gold recovery method from the leach solution was not widely studied In our study of gold leaching,8 an optimum condition to extract gold from Hishikari ore was de veloped

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The treatment of coppergold ores by ammonium thiosulfate

The effectiveness of low thiosulfate concentrations was confirmed by Cao et al 1992, who studied the effects of the concentrations of thiosulfate, copper and ammonia on the extraction of gold and silver from a sulfide concentrate Leaching was performed with a 0 2 M thiosulfate solution at 2 h retention time, which yielded 95 gold extraction

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Gold Extraction in Carbonaceous Ore using Thiosulfate

copper ore dressing sibanye gold mine westonaria gold swat plant vs zombie trainer how to make gold ore from mineral dust for ore gold mining machines gold mining equipment vendor new stone jaw crusher mineral flotation cell companies for sale for gold ore portable gold ore grinding mill gold mines and crushing units gold flotation cell

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thiosulfate gold extraction

thiosulfate leach of gold plate Feb 24, 2014 recovered powders from a sodium thiosulfate leach of gold plated pins if all Gold extraction with BORAX for small scale miners Rather Rich More details » Get Price

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