Chlorine Gold Extraction

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

This paper deals with gold extraction from a refractory concentrate by chlorine leaching. The process considers a pre-treatment of refractory materials by low temperature oxidation carried out with low oxygen concentration. The oxidized material is treated by leaching with brine.

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chlorine gold extraction - durbanlizards.co.za

US4353740A Chlorine extraction of gold Google Patents A process for treating a particulated gold bearing ore to recover the gold therein is disclosed. The process includes roasting the ore to remove sulfides as sulfur...

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chlorine for leaching gold - Mining Machine, Crusher Machine

chloride as an alternative to cyanide for the extraction of gold - SGS. hazardous and costly chlorine to oxidize/complex the gold. ... Various options available to recover gold from PLATSOL® leach solutions are also discussed.

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Gold extraction by chlorination using a pyrometallurgical ...

The objective of this research was, on one hand, to study gold extraction from an alluvial material, through a pyrometallurgical process, using chlorine gas as a reactant, and, on the other hand, to characterize the initial material and chlorination residues, using X-ray fluorescence (XRF), X-ray diffraction (XRD) and scanning electronic ...

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recovery of gold from ores with chlorine in 1898 - Gold ...

Feb 05, 2013· The earlier practical applications of chlorine to gold extraction were known as Mears' and Plattner's processes, and consisted in placing the material to be operated on in vats with water, and introducing chlorine gas at the bottom, the mixture being allowed to stand for a number of hours, the minimum about twelve, the maximum forty-eight.

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Gold extraction by chlorination using a pyrometallurgical ...

recover gold from alluvial materials by an alternative process such as chlorination, preventing environmental pollution problems gen-erated by gold extraction and concentration by other conventional methods. Extractions of gold close to 99% were achieved, at a temperature of 873 K and at a reaction time of 5400 s, with no significant attack

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How to Use Bleach on Gold Ore to Remove Gold | Sciencing

Apr 24, 2017· How to Use Bleach on Gold Ore to Remove Gold By Maria Kielmas; Updated April 24, 2017 . ... When combined with hydrochloric acid, the mixture produces chlorine that dissolves gold from gold ore. This was the first commercial method used for gold extraction.

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CHLORIDE HYPOCHLORITE OXIDATION AND LEACHING …

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.

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STUDY OF GOLD LEACHING WITH BROMINE AND BROMIDE AND …

STUDY OF GOLD LEACHING WITH BROMINE AND BROMIDE AND THE INFLUENCE OF SULPHIDE MINERALS ON THIS REACTION ... STUDY OF GOLD LEACHING WITH BROMINE AND BROMIDE AND THE INFLUENCE ... for the extraction ...

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EXTRACTION OF GOLD, SILVER AND COPPER FROM THE …

EXTRACTION OF GOLD, SILVER AND COPPER FROM THE COPPER ELECTROREFINING ANODE SLIME: SEPARATION OF THE METALS. Gabrielle N. Bard1 and Luis G. S. Sobral1 1Centre for Mineral Technology-CETEM ... The chlorine generation, either using the hydrogen peroxide or …

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gold extraction with chlorine - hotelbianca.co.uk

Gold Ore and Bleach Insight Gold Refining Forum. Sep 26, 2015·using chlorine to extract gold you simply crush the stone or matrix so fine that it can get at the gold and take hold of it as a chloride.

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Gold Refining Dissolving Gold Powder With Chlorine Gas ...

Mar 06, 2013· Using chlorine gas generated from swimming pool chlorine tablets (trichloroisocyanuric acid) mixed with hydrochloric acid in a gas generating apparatus to demonstrate how to dissolve gold powder ...

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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 ...

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Chloride as an Alternative to Cyanide - sgs.com

Chlorine/hydrochloric acid mixtures are still used today to dissolve gold and platinum group metals (PGM’s) in various precious metals refineries around the world. Chloride processes for gold extraction . have continued to attract some attention [2,3], although limited. Volatilization of gold …

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The Chemistry of the Extraction of Gold - SAIMM

The Chemistry of the Extraction of Gold M.J. Nicol, C.A. Fleming and R.L. Paul 1S.1 General Principles 15.1.1 The chemistry of gold compounds 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.

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

Aug 18, 2005· In 2003, according to the U.S. Geological Survey, approximately 2,593 tonnes of gold (i.e., about 83.4 million troy ounces) were produced worldwide from various mining operations.1 Moreover, about ...

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leaching of gold use methode chlorine - leanprocesscontrol.nl

gold electrochlorine leach. leaching of gold use methode chlorinegold electro chlorine leach sunshinepublicschool in How to Leach Gold Ore With Chlorination Sciencing 2017425-The use of chlorine is both the cheapest and most plentiful method for leaching gold chlorine gold extraction from hematite heartgenes org for catalytic reduction of ...

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Gold Ore and Bleach Insight - Gold Refining Forum.com

Sep 26, 2015· using chlorine to extract gold you simply crush the stone or matrix so fine that it can get at the gold and take hold of it as a chloride. The easiest way to do this is to put the chlorine in solution in water, and so powerful is its action on gold that it dissolves that metal, holding it in

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mining chlorine gold extraction - Mineral Processing EPC

Buy Cheap China chemicals for gold mining Products, Find China . Cheap China chemicals for gold mining Products and Suppliers Directory - Source . water treatment chemical chlorine 70% granular and tablet .. Gold Extracting Charcoal,Coconut Shell Based Activated Carbon For Gold Recovery/Mining.

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How to Extract Gold From Electronics: 11 Steps (with Pictures)

How to Extract Gold From Electronics: In this Instructable, I will show you how to extract gold from computers using products most people have lying around in their homes. The way I extract the gold is relatively straight-forward and pretty easy, but the chemicals used are very danger...

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CHLORIDE HYPOCHLORITE OXIDATION AND LEACHING OF …

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.

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chlorine gold extraction - schievelavabojourdan.be

A Method for Leaching or Dissolving Gold from … nascent chlorine which is capable of dissolving gold efficiently. In this study, ... 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 ...

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Gold Extraction by Chlorination Process - YouTube

Aug 23, 2014· Modern technology has improved the process of using chlorine as a method to dissolve gold. Resin technologies have virtually eliminated the early problems associated with using chlorine and the ...

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WO2013152424A1 - Chloride process for the leaching of gold ...

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 ...

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Newbery–Vautin chlorination process - Wikipedia

The Newbery–Vautin chlorination process is a process to extract gold from its ore using chlorination developed by James Cosmo Newbery and Claude Vautin.. Background. The process of extracting gold from ores by absorption of the precious metal in chlorine gas, from which it is reduced to a metallic state, is not a very new discovery.

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how to extract gold with bleach - educationcare.in

Process of Gold Extraction from Motherboards (18 pics) Aug 30, 2010 ... Lets see how to extract gold from old motherboards. ... produced by mixing hydrochloric acid and chlorine bleach is what will dissolve the gold...

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Gold Chlorides: Naturally Concentrating the King of Metals

But, there is a natural process involving chlorine that concentrates gold under volcanoes and forms deposits that are worth the expense of mining. The compounds gold chloride (AuCl) and hydrogen gold chloride (HAuCl 2) play important natural roles in making gold accessible to us. Steamed out of Magma.

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

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

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Gold Chlorination Process by Miller

Miller’s Gold Chlorination process was introduced by F.B. Miller. The refining process employs chlorine gas, which passed into molten gold covered with a layer of borax and silica, and reacts with most of metals present in the molten charge. Platinum group metals do not react. Basically, gold is slightly attacked in the first moments and all the chlorides formed rise to the surface and are ...

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Gold Chlorination Processes & Methods

In Liddell’s Handbook of Nonferrous Metallurgy, Vol. 2, 1945, there is to be found a very complete account of the uses of chlorine as applied to the recovery of gold and silver, in Chlorination Processes & Methods. Introducing the chapter entitled “Chlorine Metallurgical Processes” Liddell says: Chlorine as a metallurgical agent appears to have lost ground during recent years, and much ...

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