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hypochlorite leaching of gold ore

hypochlorite leaching of gold ore

CHLORIDE-HYPOCHLORITE OXIDATION AND LEACHING OF

In this research, oxidation of sulfide minerals and leaching of gold from a gold-bearing sulfide concentrate using chloride-hypochlorite solution was investigated. The effects of calcium hypochlorite concentration, sodium chloride concentration and initial pH of leachant on

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calcium hypochlorite gold leaching Mineral Processing EPC

calcium hypochlorite gold leaching Saudi Arabia detergent Saudi Arabia Detergent, Saudi Arabia Detergent Suppliers and Manufacturers Directory Source a Large Selection of Detergent Products at detergent powder.

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Effect of Pretreatment of Sulfide Refractory Concentrate

pyrite were the main minerals present on the concentrate. The best results for gold extraction were obtained with oxy- gen pressure of 80 psi, 10% (w/w) sodium hypochlorite, temperature of 80˚C, at pH = 13, and a constant stirring speed of 600 rpm. These conditions allowed an approximated 60% of gold and 90% of silver extractions in 1 hr.

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sodium hypochlorite in cyanide leaching of gold

Chloride-hypochlorite oxidation and leaching of refractory sulfide . In this research, oxidation of sulfide minerals and leaching of gold from a goldbearing Keywords: refractory gold ore, oxidative pretreatment, noncyanide leaching Calcium hypochlorite is more stable than sodium hypochlorite and.

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Hypochlorite Pretreatment of a Low Grade Carbonaceous Gold

Hypochlorite pretreatment of a refractory carbonaceous gold ore showed promise as a method for oxidizing sulfidic and carbonaceous materials prior to conventional cyanide heap leaching. However, previous studies showed hypochlorite consumption is high and gold extraction is proportional to hypochlorite consumption.

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CHLORIDE HYPOCHLORITE OXIDATION AND LEACHING OF

Chloridehypochlorite oxidation and leaching of refractory sulfide gold concentrate 65 Fig. 3. Particles size analysis of gold concentrate Fig. 4. XRD analysis of gold concentrate obtained by flotation Table 1. Major elements composition of the ore and floated concentrate

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gold leaching with hypochlorite Grinding Mill China

gold leaching with hypochlorite [ 4.9 6783 Ratings ] The Gulin product line, consisting of more than 30 machines, sets the standard for our industry. How to Use Bleach on Gold Ore to Remove Gold eHow. How to Use Bleach on Gold Ore to Remove Gold. Gold is an almost non-reactive metal, but halogens chlorine, bromine, fluorine and iodine

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sodium hypochlorite used in cyanide leaching of gold

Jul 16, 2018· An oxide gold ore was subjected to chloride/hypochlorite leaching at room temperature. . maximum gold recovery of 58% compared to sodium hypochlorite. .. Although cyanide is used commercially for the extraction of gold,.

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A Comparative Study of Cyanide and Chloride Hypochlorite

An oxide gold ore from Placer, Surigao Del Norte was subjected to chloride-hypochlorite and cyanide leaching at room temperature at 3 different hours 4 hours, 12 hours and 24 hours. This project characterized the ore used and assessed the effects

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The Igoli Mercury Free Gold Extraction Process Acid Bleach

Mintek has developed a process called iGoli Mercury-free Gold Extraction Process that can be used to extract gold from 0.1 % gold concentrate to produce 99.90 percent gold product. The process uses a mixture of pool acid (dilute hydrochloric acid), bleach (sodium hypochlorite) and sodium metabisulphate to leach and recover gold.

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hypochlorite gold leaching congresoemdr2016.com

hypochlorite gold leaching. Detergent Production Plant. Gold ore single impeller leaching tank, stirred leaching tank in gold processing plant High quality gold liquid washing mixing tank for

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Sodium hypochlorite pretreatment for heap leaching gold ore

Laboratory leaching experiments were conducted to ascertain the effectiveness of sodium hypochlorite solution, NaOCl, as a pretreatment for oxidizing the carbonaceous matter and dissolving gold from finely disseminated gold ores.

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hypochlorite leaching of gold ores kebea.org

The leaching kinetics of an oxide gold ore with iodide Download citation The leaching kinetic Two types of gold ores were subjected to iodide/iodine leaching at room temperature. The effects of three factors, including ore type (a carbonaceous and an oxide gold ores), iodide/iodine concentration, and the presence of oxygen in solution on gold

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Advances in Gold and Silver Processing

HYPOCHLORITE LEACHING OF GOLD ORE W.T.Yen, R.A.Pindred and M.P.Lam Mining Engineering, Queen's University Kingston, Ontario, Canada K7L 3N6 ABSTRACT Cyanide is a conventional lixiviant for gold extraction but its' toxicity is a major concern for the environmentalist There are

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US9051626B2 Method and a system for gold extraction with

In the leaching reactor 40, the ore is slurried with the brine from the brine reservoir 10, acidified with sulphuric acid or hydrochloric acid and contacted with halogens liberated from the hypochlorite generated in the diaphragm-less electrolytic cell 20.

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Sodium hypochlorite pretreatment for heap leaching gold ore

Gold extraction was shown to be dependent on sodium hypochlorite concentration, heap leach flowrate, temperature and leaching time or bed volumes. Optimum leaching conditions were 10°C and below utilizing a 1.0 percent sodium hypochlorite solution at a flowrate of 15 gal/ft2 day or greater for 2 to 13 bed volumes depending on the effluent hypochlorlte pH and ore type.

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gold leaching with hypochlorite Grinding Mill China

Topic 3: Ore processing and metal recovery SlideShare. Topic 3: Ore processing and metal recovery From a series of 5 lectures on Metals, minerals, mining and (some of » Learn More. The Finishing.com Hotline (Public Forum) for 10772. Refinishing of Aluminum Rims open Q. (December 27) 37106. Roof Cleaning with sodium hypochlorite (December 26) 12028.

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How to Leach Gold Ore With Chlorination Sciencing

Grind the ore so that all parts of the ore are open to the HCL mixture. Add your ore to a plastic-tub ore mixer along with 10 pounds of river rock and turn the mixer until the ore is 200 mesh or more. 200 mesh means there are at least 200 particles in one square inch of ore.

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Hypochlorite Leaching of Gold Ore Hydrochloric Acid

HYPOCHLORITE LEACHING OF GOLD ORE hydrochloric acid concentration 82 % of the Extracting gold from an ore required gold was extracted with 3 % HCl. This Fig. Additions of hydrochloric acid will reduce REFERENCES the sodium hypochlorite requirement A leach solution containing 1 @

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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 gold leaching performance were investigated.

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gold leaching with chlorine plant spirosurvey.co.za

Hypochlorite Leaching of Gold Ore 911metallurgist. In a leach solution containing 20 % HCl and 20 g/L NaCl, 97 % of the gold was extracted in 6 hours with 90 kg/t available chlorine and 95 % of the gold was extracted in 18 hours with 45 kg/t available chlorine. Chat;

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hypochlorite leaching of gold ore thejewellery.co.za

hypochlorite leaching of gold ore Download as PDF InTechFeb 1, 2012 The poor extraction of refractory gold ores is an old and still existing problem Oxidation of . More Products; Leaching of an oxide gold ore with chloride/hypochlorite ,

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Gold Leaching from a Refractory Gold Concentrate by the

The method of chloride-hypochlorite leaching has the advantages of short process, low pollution and higher in reaction rate compared with the traditional leaching method. In this research, NaCl NaClO solution is used to leaching gold from a refractory gold concentrate, and the influence of NaCl and NaClO concentration, reaction time to the leaching rate were investigated in this experiment.

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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 gold leaching performance were investigated.

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Hypochlorite Leaching of Gold Ore Hydrochloric Acid

Hypochlorite Leaching of Gold Ore. Cargado por Titchão lixiviação alternativa do ouro. Guardar . Hypochlorite Leaching of Gold Ore. para más tarde. guardar. Relacionado. Información. Insertar.

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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 gold leaching performance were investigated.

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A Method for Leaching or Dissolving Gold from Ores or

The hydrometallurgical leaching of native gold from gold-bearing ores or the dissolution of gold metal during the A Method for Leaching or Dissolving Gold from Ores or Precious Metal Scrap Nicolas Geoffroy and François Cardarelli 4Au0 + 8 NaCN + 2H 2 O + O 2 4Na[Au(CN) 2] + 4NaOH (1) 4Au0 + 8(NH 4) 2 S 2 O 3

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calcium hypochlorite gold leaching mountainboards.co.za

Leaching of an oxide gold ore with chloride/hypochloriteDec 19, 2017 An oxide gold ore was subjected to chloride/hypochlorite leaching at room temperature.

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Leaching of Chalcopyrite with Sodium Hypochlorite

leaching, the initial pH varied from 12.5 to 13.7, the temperature from 35 Cto75 C, the sodium hypochlorite concentration from 0.2 to 0.85 molar, and the chalcopyrite dosage from 1 to 10 g/500 ml.

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Leaching of an oxide gold ore with chloride/hypochlorite

An oxide gold ore was subjected to chloride/hypochlorite leaching at room temperature.

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