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gold leaching chlorine plant :

Roasting and chlorine leaching of gold-bearing refractory ...

2013-9-1 Roasting and chlorine leaching of gold-bearing refractory concentrate: Experimental and process analysis. ... The estimated total plant cost is about 9 million €, assuming a straight line amortization schedule, thus under these hypotheses the incidence of depreciation charge is 27%. 4.

Chlorine leaching of gold-bearing sulphide concentrate

1992-6-1 Chlorine leaching, as a potential alternative to the conventional cyanidation for the extraction of gold, was tested on a sulphide concentrate and its calcine from the Pearl River Area, South China. The basic feasibility of using the resin-in-leach (RIL) technique in chlorine leaching of the gold-bearing sulphide concentrate and its calcine is ...

iGoli chlorine leaching Gold Refining Metal Extraction ...

2010-12-16 Dec 10, 2010. #4. The ratio is irrelevant. Start with enough Hcl to absorb the volume of gold,then add NaOCl in small amounts and give it time to work in between additions.The Hcl is only there to digest the gold (creating the auric chloride)when it has been oxidized using the NaOCl. If you can not find SMB you can use copperas (FeSO4, iron (ii ...

Gold Chlorination Processes Methods

2016-8-31 Metallurgical ContentDry ChlorinationChlorination Process for GoldWet ChlorinationChlorination and AmalgamationPatio ProcessPan-Amalgamation ProcessChloridizing Roasting and Leaching Patern processAugustine processTainton processHolt-Dern process Chlorine Volatilization of Gold In Liddell’s Handbook of Nonferrous Metallurgy, Vol. 2, 1945, there is to be found

Leaching of an oxide gold ore with chloride/hypochlorite ...

2007-6-1 An oxide gold ore was subjected to chloride/hypochlorite leaching at room temperature. The effects of three factors, including Ca(OCl) 2 vs. NaOCl, OCl − concentration, and HCl concentration on gold leaching performance were investigated. Due to formation of CaOCl + complex in solution and hence less reactivity, calcium hypochlorite produces a sluggish gold leaching kinetics, taking twice ...

Gold refining by solvent extraction—the Minataur™

2009-8-26 Optimised pilot-plant leaching results Parameter Peñoles Harmony Leaching time (h) 2–3 2 Gold leaching efficiency (%) 99.2 99.3 Gold concentration of feed material (%) 98.9 67 Gold concentration in leach liquor (g/l) 74 65 Fraction of initial gold reporting to residue (%) 0.85 0.67 Gold concentration of residue (%) 99.5 2.2 Table IV

Chlorine Oxygen Leaching Process

2017-8-31 Recovery of Metal in Lead Smelter Matte by Chlorine Oxygen Leaching. Metal values were recovered from a lead smelter matte using a chlorine-oxygen process to solubilize the Cu, Ni, Zn, Co, and Cd and convert the lead to a chloride. A subsequent hot brine leach was used to

The process design of gold leaching and carbon-in-pulp ...

2009-8-27 the size of the leaching plant that would be required as well as reduces the amount of leaching reagents required. Many gold plants use conventional thickening with flocculant addition. High rate thickeners, as well as de-watering systems that use cyclones only or cyclones and high-rate thickeners can also be used in principle.

Roasting and chlorine leaching of gold-bearing refractory ...

2013-9-1 Roasting and chlorine leaching of gold-bearing refractory concentrate: Experimental and process analysis. ... The estimated total plant cost is about 9 million €, assuming a straight line amortization schedule, thus under these hypotheses the incidence of depreciation charge is 27%. 4.

Chlorine leaching of gold-bearing sulphide concentrate

1992-6-1 Chlorine leaching, as a potential alternative to the conventional cyanidation for the extraction of gold, was tested on a sulphide concentrate and its calcine from the Pearl River Area, South China. The basic feasibility of using the resin-in-leach (RIL) technique in chlorine leaching of the gold-bearing sulphide concentrate and its calcine is ...

Leaching of an oxide gold ore with chloride/hypochlorite ...

2007-6-1 An oxide gold ore was subjected to chloride/hypochlorite leaching at room temperature. The effects of three factors, including Ca(OCl) 2 vs. NaOCl, OCl − concentration, and HCl concentration on gold leaching performance were investigated. Due to formation of CaOCl + complex in solution and hence less reactivity, calcium hypochlorite produces a sluggish gold leaching kinetics, taking twice ...

iGoli chlorine leaching Gold Refining Metal Extraction ...

2010-12-16 Dec 10, 2010. #4. The ratio is irrelevant. Start with enough Hcl to absorb the volume of gold,then add NaOCl in small amounts and give it time to work in between additions.The Hcl is only there to digest the gold (creating the auric chloride)when it has been oxidized using the NaOCl. If you can not find SMB you can use copperas (FeSO4, iron (ii ...

Leaching of an oxide gold ore with chloride/hypochlorite ...

An oxide gold ore was subjected to chloride/hypochlorite leaching at room temperature. The effects of three factors, including Ca(OCl)2 vs. NaOCl, OCl− concentration, and HCl concentration on ...

iGoli chlorine leaching Page 2 Gold Refining Metal ...

2011-3-8 Optimal leaching temperature is 50 degrees C. Gold can be recovered from the leach solution by first heating it to drive off the chlorine content, and concentrating the values within solution through evaporation, as well as reducing the volume of solution to be worked with.

hypochlorite leaching of gold ore 6821

2019-2-18 The effects of calcium hypochlorite concentration, sodium chloride concentration and initial pH of leachant on changes of the slurry pH and Eh were examined. Then, considering the stability range of the gold complex (Eh ~ 1000 mV) and for-mation of chlorine gas (pH . 3.5), the optimum leaching parameters were determined. Get More

New Chloride Leaching Process for Gold Extraction from ...

2017-8-28 chloride leach solutions and their gold content made susceptible to cyanide leaching. 2 The regeneration, in process, ofnitric acid usedas oxidant In the chloride leaching reaction, the nitric acid is reduced to NO, the conversion ofwhich back to HN03 is costly by conventional methods. A 'leaching in froth' (LlF) process has been devised,

The process design of gold leaching and carbon-in-pulp ...

2009-8-27 the size of the leaching plant that would be required as well as reduces the amount of leaching reagents required. Many gold plants use conventional thickening with flocculant addition. High rate thickeners, as well as de-watering systems that use cyclones only or cyclones and high-rate thickeners can also be used in principle.

A Method for Leaching or Dissolving Gold from Ores or ...

2009-1-1 lurgical gold extraction routes utilize a leaching step to produce a gold-bearing solution as an intermediate product while the recycling of secondary gold from electronic and precious metal scrap is based on the selective and fast dissolu-tion of the precious metal. Therefore, A Method for Leaching or Dissolving Gold from Ores or Precious

gold leaching with chlorine plant - greenrevolution

Wet Chlorination Wet chlorination uses chlorine (or chlorine oxidant) to dispose of Arsenic-bearing refract-tory gold ore.It used water chlorination to leach gold and gold leaching rate reached 91.48%.17)mid-1980 s, the first commercial plant which applied bacterial oxidation to pretreat refractory gold...

Leaching of an oxide gold ore with chloride/hypochlorite ...

An oxide gold ore was subjected to chloride/hypochlorite leaching at room temperature. The effects of three factors, including Ca(OCl)2 vs. NaOCl, OCl− concentration, and HCl concentration on ...

(PDF) Gold recovery from WEEE by chlorine system

The gold from decopperized anode slime first was dissolved with chlorine gas in aqueous medium, later the dissolved gold was precipitated by using a rotational copper disc.

hypochlorite leaching of gold ore 6821

2019-2-18 The effects of calcium hypochlorite concentration, sodium chloride concentration and initial pH of leachant on changes of the slurry pH and Eh were examined. Then, considering the stability range of the gold complex (Eh ~ 1000 mV) and for-mation of chlorine gas (pH . 3.5), the optimum leaching parameters were determined. Get More

New Chloride Leaching Process for Gold Extraction from ...

2017-8-28 chloride leach solutions and their gold content made susceptible to cyanide leaching. 2 The regeneration, in process, ofnitric acid usedas oxidant In the chloride leaching reaction, the nitric acid is reduced to NO, the conversion ofwhich back to HN03 is costly by conventional methods. A 'leaching in froth' (LlF) process has been devised,

iGoli chlorine leaching Page 2 Gold Refining Metal ...

2011-3-8 Optimal leaching temperature is 50 degrees C. Gold can be recovered from the leach solution by first heating it to drive off the chlorine content, and concentrating the values within solution through evaporation, as well as reducing the volume of solution to be worked with.

WO2013152424A1 - Chloride process for the leaching of

A process for the extraction of gold from a gold-bearing ore or concentrate, comprising the steps of leaching the gold-bearing ore or concentrate with a lixiviant of hydrochloric acid and magnesium chloride at atmospheric pressure at a temperature of at least 90°C and an Eh of at least 900 mV. After a liquid/solids separation step, the solution obtained is subjected to an organic solvent ...

CHLORIDE HYPOCHLORITE OXIDATION AND LEACHING

2012-10-4 Chloride–hypochlorite oxidation and leaching of refractory sulfide gold concentrate 63 Fig. 1. The Pourbaix diagram of Fe–S at [Fe] –= 10 4 M, [S] = 10– M and 25 C (the chlorine species regions are also marked) (Marsden and House, 2005) Fig. 2.

A Method for Leaching or Dissolving Gold from Ores or ...

2009-1-1 lurgical gold extraction routes utilize a leaching step to produce a gold-bearing solution as an intermediate product while the recycling of secondary gold from electronic and precious metal scrap is based on the selective and fast dissolu-tion of the precious metal. Therefore, A Method for Leaching or Dissolving Gold from Ores or Precious

Optimizing and evaluating the operational factors ...

2015-12-8 This research was carried out on Aghdareh gold ore. The Aghdareh mine and gold processing plant is located 32 km from Takab city in the western Azerbaijan province, Iran, at 46°58′30′′N and 36°39′29′′E. The grade of gold ore is 3 ppm. Also, cyanide leaching is used to process gold in the Aghdareh mine . The main problem in ...

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