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how do they separate gold from silver and copper ores

Sep 14 2010· They used a process called Cupellation in which is a metallurgical process in which ores or alloyed metals are treated under high temperatures and carefully controlled operations in order to separate noble metals like gold and silver from base metals like lead copper or zinc that might be present in the ore

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    • how do they separate gold from silver and copper ores

      Sep 14 2010· They used a process called Cupellation in which is a metallurgical process in which ores or alloyed metals are treated under high temperatures and carefully controlled operations in order to separate noble metals like gold and silver from base metals like lead copper or zinc that might be present in the ore

    • PARTING Separate Gold and Silver by Melting

      Parting is the separation of silver from gold and a process during which the base metals are separated from both but as the presence of a high percentage of these base metals is injurious to the successful conduct of the processes which are chiefly in use a preliminary refining by one of the methods already described is usually necessary

    • Gold extraction Wikipedia

      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 small gold

    • How to separate silver from gold ore Gold Refining

      Feb 24 2013 · Depending on gold to silver ratio content of the metal the silver in aqua regia can make it hard to dissolve the gold as the silver chloride forms a crust keeping the acids from dissolving the gold and then also the gold can make it hard for nitric acid to get at

    • How can you separate gold if it mixed with copper and silver

      Depending on which color the gold is different elements are mixed in Yellow gold is mixed with silver and copper White gold is mixed with nickel platinum palladium and zinc Rose gold is mixed

    • US890160A Process of removing gold silver copper and

      Description The process of separating gold from lead alloys of the precious metals which consists in melting the same in combination with materials that will separate the precious metals from the lead then adding a material that will dissolve the zinc and leave the gold silver platinum copper and the like in powder or granular form

    • how to melt and separate gold from copper BINQ Mining

      Apr 22 2013 · as copper To separate silver from an ore containing a quantity of copper you need to heat the ore sample to a level sufficient to melt the silver but leave the copper in a stillsolid state Junk car melt down how much coppersteelgoldsilveretc is in Well to begin with no silver or gold

    • How to Remove Copper from Silver Sciencing

      Apr 24 2017 · It is often found in metallic ores that contain quantities of other metals such as copper To separate silver from an ore containing a quantity of copper you need to heat the ore sample to a level sufficient to melt the silver but leave the copper in a stillsolid state

    • Copper Silver and Gold University of Denver

      Copper and silver and perhaps even gold harden when they have been worked and it becomes impossible to work them further even with great effort without danger of cracking and crumbling This work hardening is seen even when you bend the lid of a tin can back and forth to break it off

    • How do you separate gold from copper Yahoo Answers

      Jun 24 2006 · Answers Best Answer there are different tempuratures to melt gold and copperfor instance gold is a softer metal and it will melt before the the temp for melting gold is 1000 degreesand copper is 1200 degreesthe gold will melt first You must heat the gold containing copper ore until it becomes molten

    • Silver processing

      Silver processing Silver processing preparation of the ore for use in various products Silver has long been valued for its white metallic lustre its ability to be readily worked and its resistance to the corrosive effects of moisture and oxygen The lustre of the pure metal is due to its electron configuration

    • Extracting gold and silver from ore YouTube

      Oct 29 2016 · So next week or something we will refine it tell me what you thought in the likesharecommentand subscribe for science and exploration Also when we were panning the was a lot of

    • Photos of Natural Silver Ore Silver minerals Crystal

      The gold and silverbearing copper ores exhibit great differences in form and age neither do all the occurrences yield much gold or silver and moreover they are of more importance as gold producers silver being less often associated with the copper 3 Leadbearing Silver ores These are silver ores containing 4 percent or more of lead

    • Extracting Gold HowStuffWorks

      How Gold Works Leaching dissolves the gold out of the ore using a chemical solvent The most common solvent is cyanide which must be combined with oxygen in a process known as carboninpulp As the cyanide and oxygen react chemically gold in the pulp dissolves When workers introduce small carbon grains to the tank

    • how to segregate gold ore from copper ore

      silver processing Britannica Jan 28 2015 Silver processing preparation of the ore for use in various products Boiling with concentrated sulfuric acid to separate silver and gold is mineral concentrate depend on whether the major metal is copper zinc or lead

    • Photos of Natural Silver Ore Silver minerals Crystal

      Gold and silver are obtained from a variety of ores in some of which the gold predominates in others silver is the primary value while in still a third class these two metals may be mixed with the base metals such as lead copper zinc and iron Few silver ores are absolutely free from gold and vice versa so that a separate consideration of the two is more or less a difficult task

    • How can you separate gold if it mixed with copper and silver

      It isnt goldAu silverAg and copperCu are all separate elements But if youre talking about when they add copper or silver to gold its to harden it so you cant bend it in your hands

    • How do you separate silver from copper Answers

      It isnt goldAu silverAg and copperCu are all separate elements But if youre talking about when they add copper or silver to gold its to harden it so you cant bend it in your hands

    • How to Take the Impurities out of Gold LEAFtv

      Set the gold ore and a small quantity of lead in a cupel Place the cupel in a blast furnace Heat the mixture until the lead and gold ore liquefy The blast furnace batters the cupel with hot air The lead combines with other metals and forms oxide compounds that separate from the gold This process works best with small quantities of gold ore

    • Separating Copper from Gold electroplating

      Separating Copper from Gold electroplating 8 replies The remaining time was 0 V This resulted in plating of gold and silver and minimal plating of Cu But the Cu needs to be removed from the circuit A separate EW for the high Cu low Au Ag solution would be used But the use of a Zadra circuit instead of an AARL impacts the use

    • Copper Mining and Processing Processing of Copper Ores

      After the copper ore is crushed liquid is added to make it a slurry The slurry is a mix of valuable copper ore minerals and “worthless” rock called gangue pronounced “gang” The slurry is placed in a tank and a process called froth floatation is used to separate the copper minerals from the gangue

    • How do I separate gold from other metals like silver

      Sep 08 2017 · The Edit Credential button is suddenly not letting put in my profession Fine Goldsmith as a credential I have been a fine goldsmith for over forty years How do I separate gold from other metals like silver aluminum etc This can only be done

    • How to Remove Gold from Ore

      Crush and mill the gold ore to dust like particles Ore is put into the crusher which breaks it up Water is added during the process which when mixed to the ore particles creates a pulp The ore in the pulp is then ground into smaller particles and pulverized into a ball mill

    • Silver processing

      This is smelted in a small furnace to oxidize virtually all metals present except silver gold and platinumgroup metals The metal recovered called doré generally contains 05 to 5 percent gold 01 to 1 percent platinum metals and the balance silver This metal is cast to form anodes and electrolyzed in a solution of silvercopper nitrate

    • Copper Ore Types Sulfides vs Oxides INN

      Copper sulfide ores are typically the most profitable types of copper ores to mine That is because they have high copper content and the copper in them can more easily be separated from unwanted

    • Copper Silver and Gold University of Denver

      Rich copper ores are very rare and much effort has been expended to make the more widely available lean ores economic Most copper now comes from enriched zones that are mined in open pits as earth containing less than 1 copper not as rich vein minerals of 20 Cu and more The primary ores are sulphides and oxides usually mixed with iron

    • Dummies Guide to EASY silver bullion refining at home as

      Another source of silver is copper water pipe joints as they use silver solder on the joints Research wet chemical and fire assaying and you will come up with other ways to separate gold and silver from base metals and even gold and silver ore concentrates