Chloride as an Alternative Lixiviant to Cyanide for Gold Gold processing Britannica

Chlorine was first used in recovery of gold from its ores in by Karl Friedrich Plattner who used metallic iron to cement gold from the chloride leach solution The barrel chlorination process used chlorine gas generated with bleaching powder and sulfuric acid inside a rotating barrelGold processing preparation of the ore for use in various products Native gold is the most common mineral of gold accounting for about 80 percent of the metal in the Earth’s crust It occasionally is found as nuggets as large as 12 millimetres 05 inch in diameter and on rare occasions

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How to Use Bleach on Gold Ore to Remove Gold Sciencingrecovery of gold from ores with chlorine in Gold

Apr 24 32 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 combined with hydrochloric acid the mixture produces chlorine that dissolves gold from gold oreFeb 05 32 The chlorination process of extracting gold From its matrix and from from concentrates is freely alluded to in newspapers and amongst miners and yet as a rule the principle is but vaguely understood even by men who make mining their business Our explanation will be principally for persons who understand but little if anything of chemistry

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Miller Chlorination process Gold Refining ForumMiller Chlorination process Gold Refining Forum

Aug 22 32 I m doing a research on gold refinning processes available in market I have not found any figure drawing schem or flowchart of the miller chlorination process As I know there is a lot of people who understand a lot about gold refinning here is tere anyone who could send me a picture a schem a draw anything Thanks a lotAug 22 32 I m doing a research on gold refinning processes available in market I have not found any figure drawing schem or flowchart of the miller chlorination process As I know there is a lot of people who understand a lot about gold refinning here is tere anyone who could send me a picture a schem a draw anything Thanks a lot

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Miller process ore refining BritannicaMiller process Wikipedia

In gold processing History Miller’s process of refining impure gold with chlorine gas patented in Britain in and Emil Wohlwill’s electrorefining process introduced in Hamburg Ger in it became possible routinely to achieve higher purities than had been allowed by fire refiningThe Miller process is an industrial scale chemical procedure used to refine gold to a high degree of purity It was invented by Francis Bowyer Miller patented This chemical process involves blowing a stream of pure chlorine gas over and through a crucible filled with molten but impure gold This process purifies the gold because nearly all other elements will form chlorides

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Refining Gold Jewelry Scraps Ganoksin Jewelry Making Leaching of an oxide gold ore with chloride/hypochlorite

Miller Chlorination Process A pyrometallurgical chlorination process the Miller process is one of the oldest and most widely used processes in large scale gold refining It involves bubbling chlorine gas through molten bullionChlorine had been used to dissolve gold from ores and concentrates during the second half of the 19th century in Australia and North America At the beginning of the 20th century this process was gradually replaced by the more economical alkaline cyanide leaching Sparrow and Woodcock Nowadays however due to the realization of

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Treatment of Gold Telluride Ores ScienceDirectTypes of Gold Refining Sciencing

The process called the Emperor Process used a basic hypochlorite ie chlorine solution to oxidize a high grade gold telluride concentrate produced from flotation The flotation was carried out using lime and cyanide to depress sulfides giving a high grade free gold telluride concentrateApr 24 32 Types of Gold Refining Miller Chlorination Process In the Miller process gold is refined by chlorine Chlorine and silver combine with base metals to form chlorides while gold is left untouched by this Doré bars are melted in a furnace and then chlorine is added to form chlorid After a few hours the chlorides are removed from the

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Metal Extraction Through Chlorine Metallurgy Request PDFGold Chlorination Process by Miller

Chlorination has been an important process step in the extraction of many nonferrous metals from their ores and concentrat Some of the important chlorinating agents are gaseous chlorine Miller’s Gold Chlorination process was introduced by FB 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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PDF Gold Extraction from Cyanidation Tailing Using A Method for Leaching or Dissolving Gold from Ores or

equation so the chlorination process of gold increas Metals 8 6 of 11 Metals 8 x FOR PEER REVIEW 7 of 14 Figure 5Plattner process gold was dissolved into chlorine water ie water saturated by chlorine gas while bromine water was also mentioned It was the first hydro metallurgical process to recover gold9 Svistunov et al studying the action of chlorine water onto gold suggested that the dissolution mechanism is based on

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Gold Extraction by Chlorination Process EPA1 A hydrometallurgical process for recovering

Aug 23 32 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 EPA1 EPA EPA EPA1 EP A1 EP A1 EP A1 EP A EP A EP A EP A EP A EP A EP A1 EP A1 EP A1 Authority EP European Patent Office Prior art keywords gold tellurium selenium process silver Prior art date 06 14 Legal status The legal

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Chloride as an Alternative to CyanideExtraction of Gold

Chlorination was the most popular process to extract gold before it was rendered obsolete with the advent of the cyanidation process at the turn of the last century not least because it required the use of potentially hazardous and costly chlorine to oxidize/complex the goldBromine acts more energetically than chlorine and has also been employed in the extraction The recovery of the gold is effected similarly and the bromine is then liberated by the action of chlorine but it is impossible to prevent loss of bromine Cyanide process The extraction of gold by the cyanide method is of great technical importance

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Gold cyanidation WikipediaExtraction of Gold

Gold cyanidation also known as the cyanide process or the MacArthur Forrest process is a hydrometallurgical technique for extracting gold from low grade ore by converting the gold to a water soluble coordination complexIt is the most commonly used leaching process for gold extraction Production of reagents for mineral processing to recover gold copper zinc and silver represents Bromine acts more energetically than chlorine and has also been employed in the extraction The recovery of the gold is effected similarly and the bromine is then liberated by the action of chlorine but it is impossible to prevent loss of bromine Cyanide process The extraction of gold by the cyanide method is of great technical importance

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what is the chlorination process for gold miningRefining of Gold at the Rand Refinery SAIMM

Getting more gold from slimes higher productivity in wet what is the chlorination process for gold mining The process of wet chlorination oxidizes and solubilizes the gold and selenium in the slimHydrogen peroxide is used as the oxidant and hydrochloric acid provides the chloride for gold complex solubilityThe Process of Excavating and Refining Gold How to make gold 24kChamber of Mines investigated the possibility of establishing a local gold refinery The technical aspects were discussed with Sir TK Rose a leading authority on gold metallurgy and the chlorine refining process was chosen specifically with a view to the rapid and effective treatment of

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