extract silver from ore by cathode anode process

patent us - process for the electrolytic recovery of lead

a method of extracting any or all of zinc silver and lead from their mixed sulfide ores and ore concentrates the method comprises iron and zinc sulphides are present an ion-selective permeable membrane is used to separate the anode compartment containing ore slurry and reactants from the cathode compartment

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gold processing britannica com

by bc the process of purifying gold-silver alloys with salt to remove the silver was developed the mining of alluvial deposits and later oxide ore deposits are frequently of such low grade e g 3 to 10 parts per million that extensive mineral processing cannot economically be justified in this case they are merely

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refining metallurgy - wikipedia

gold and silver preferentially dissolved in this thus providing a means of recovering these precious metals to produce purer copper suitable for making copper plates or hollow-ware further melting processes were undertaken using charcoal as fuel the repeated application of such fire-refining processes was capable of

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silver ore - the mining processes that transform ore into bullion

dec 18 when silver is found in ores containing copper then the electrolytic refining method is used to extract the silver the ore is placed in an electrolyte solution with a cathode and an anode electricity is then passed through the solution forcing the silver to accumulate around the anode while copper attaches

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how copper is made - material used processing steps product

the first mention of the systematic extraction of copper ore comes from about b c when an egyptian reference describes mining operations on the sinai peninsula in about the tanks are filled with an acidic copper sulfate solution which acts as an electrical conductor between the anode and cathode when an

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copper extraction - wikipedia

all primary sulfide ores of copper sulfides and most concentrates of secondary copper sulfides being chalcocite are subjected to smelting some vat leach or pressure leach processes exist to solubilise chalcocite concentrates and produce copper cathode from the resulting leachate solution but this is a minor part of the

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electrolytic refining silver - gold - copper - metallurgist

feb 26 briefly the anodes are dissolved pure silver collects on the cathodes copper and other metals forming soluble nitrates go into the bath and gold and other this process is used at the san francisco mint to work up the copper occurring as base metal in the bullion and to recover the copper used to

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copper mining and extraction sulfide ores

even the best chemical method cannot remove all the impurities from the copper but with electrolytic refining it is possible to produce 99 99 pure copper the blister copper anodes are immersed in an electrolyte containing copper sulfate and sulfuric acid pure copper cathodes are arranged

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copper mining and extraction sulfide ores

even the best chemical method cannot remove all the impurities from the copper but with electrolytic refining it is possible to produce 99 99 pure copper the blister copper anodes are immersed in an electrolyte containing copper sulfate and sulfuric acid pure copper cathodes are arranged

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copper extraction - wikipedia

all primary sulfide ores of copper sulfides and most concentrates of secondary copper sulfides being chalcocite are subjected to smelting some vat leach or pressure leach processes exist to solubilise chalcocite concentrates and produce copper cathode from the resulting leachate solution but this is a minor part of the

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copper silver and gold

nov 24 although copper was probably originally encountered in nature as the native metal it was also probably the first to be extracted by smelting from ores zippe proposes that this the object to be plated forms the cathode the negative electrode and the anode can be silver or an inert substance for every

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manufacturing process of copper - the balance

mar 2 copper is typically extracted from oxide and sulfide ores that contain between 0 5 and 2 0 percent copper the refining immersed in a tank of copper sulfate and sulphuric acid along with a pure copper cathode starter sheet the blister copper becomes the anode in a galvanic cell stainless steel cathode

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electro copper refining - [email protected] - elmhurst college

the final step is a process called electrorefining this is done by electrolysis where the copper anodes from the smelter become positive electrodes and thin three-foot square sheets of pure copper are used as negative electrodes forty-five anodes and 46 cathodes are interleaved and immersed in an electrolysis tank filled

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recovery of silver gold and lead from a complex sulfide ore

byproduct lead recovery and spent fecl 3 leach solution recycle 8 proposed process for recovering of silver gold lead and zinc from complex ores and regener- ating the spent fec13 leach solution by electrolysis pb2+ + 2e- pb cathode g 2w + 2e- h4 cathode h 2fe2+ 2fe3+ + 2e- anode 0 2cr

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the extraction of copper - chemistry libretexts

jun 11 the method used to extract copper from its ores depends on the nature of the ore sulfide the purification uses an electrolyte of copper ii sulfate solution impure copper anodes and strips of high purity copper for the cathodes the anode sludge will contain valuable metals such as silver and gold

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copper extraction and purification - chemguide

extraction purification and uses of aluminium sulphide ores such as chalcopyrite are converted to copper by a different method from silicate carbonate or sulphate ores the purification uses an electrolyte of copper ii sulphate solution impure copper anodes and strips of high purity copper for the cathodes

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refining metallurgy - wikipedia

gold and silver preferentially dissolved in this thus providing a means of recovering these precious metals to produce purer copper suitable for making copper plates or hollow-ware further melting processes were undertaken using charcoal as fuel the repeated application of such fire-refining processes was capable of

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how to purify gold sciencing

apr 24 when an electric current passes from the anode to the cathode through the electrolyte the gold at the anode dissolves and collects at the cathode dr f b miller of the sidney mint created a process to purify gold using chlorine which forms chlorides with silver and other ore impurities but leaves gold

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copper extraction and purification - chemguide

extraction purification and uses of aluminium sulphide ores such as chalcopyrite are converted to copper by a different method from silicate carbonate or sulphate ores the purification uses an electrolyte of copper ii sulphate solution impure copper anodes and strips of high purity copper for the cathodes

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the extraction of copper - chemistry libretexts

jun 11 the method used to extract copper from its ores depends on the nature of the ore sulfide the purification uses an electrolyte of copper ii sulfate solution impure copper anodes and strips of high purity copper for the cathodes the anode sludge will contain valuable metals such as silver and gold

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copper mining and processing processing of copper ores

although this requires more ore to be extracted and processed this process is less expensive so oxides can still be mined at a profit on the other hand while copper thin sheets of pure copper which are called cathodes and weigh about 15 pounds each are hung in between the anodes an electric current is applied

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silver ore - the mining processes that transform ore into bullion

dec 18 when silver is found in ores containing copper then the electrolytic refining method is used to extract the silver the ore is placed in an electrolyte solution with a cathode and an anode electricity is then passed through the solution forcing the silver to accumulate around the anode while copper attaches

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asarco » refining

the asarco copper refineryimagine a building bigger than ten football fields so long it's said that the builders had to account for the curvature of the earth when laying out the foundation!it's the asarco copper refinery in amarillo texas a state known for big things where big things happen every year more than

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electrolytic refining silver - gold - copper - metallurgist

feb 26 briefly the anodes are dissolved pure silver collects on the cathodes copper and other metals forming soluble nitrates go into the bath and gold and other this process is used at the san francisco mint to work up the copper occurring as base metal in the bullion and to recover the copper used to

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extraction of gold silver and copper from the copper - cetem

copper sulphides concentrates from the flotation process of copper primary ore contain commonly small amounts of precious metals such as gold and silver during the smelting process of those concentrate all gold and silver are practically in the blister copper which is cast into anodes those copper anodes are

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electrowinning for gold mining - basic processing of gold mining

this process involves the use of alkaline cyanide solution as an electrolyte in a cell as the anode and cathode among others can use metals most often processed in electrowinning techniques are copper gold and silver most metals in addition gold and platinum group metals associated with sulfidic base metal ores

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extraction of gold silver and copper from the copper - cetem

copper sulphides concentrates from the flotation process of copper primary ore contain commonly small amounts of precious metals such as gold and silver during the smelting process of those concentrate all gold and silver are practically in the blister copper which is cast into anodes those copper anodes are

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how copper is made - material used processing steps product

the first mention of the systematic extraction of copper ore comes from about b c when an egyptian reference describes mining operations on the sinai peninsula in about the tanks are filled with an acidic copper sulfate solution which acts as an electrical conductor between the anode and cathode when an

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copper mining and processing processing of copper ores

although this requires more ore to be extracted and processed this process is less expensive so oxides can still be mined at a profit on the other hand while copper thin sheets of pure copper which are called cathodes and weigh about 15 pounds each are hung in between the anodes an electric current is applied

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gold and silver - epa

gold and silver are discussed together in this report since most of the processes used to recover one will also recover the smelting operations remove iron sulfur and other impurities from the ore and produce copper anodes for electrolytic gold/steel wool cathode is placed in a vat containing a sulfuric acid solution

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