Refining silver from smithing A discussion started in but continuing through Q I do lost wax casting and smithing I refine gold with nitric acid at home by mixing scrap gold of different karat with copper and then dissolving it in slightly hot nitric ac That works very well for meI recommend doing more research on the roasting of sulfide gold or Whatever you do don t mix nitric acid with the HCl Depending on relative concentrations of the two acids that can make aqua regia which will dissolve your gold as well
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Nov 13 32 I am trying to determine if i have pyrite or gold what acid will dissolve the pyrite and leave the gold behind Answered by a verified Auto MechanicHow to Test Gold with Nitric Acid Nitric Acid Gold Testing How Properly Test Gold Items with Nitric Acid and Properly Interpret the Results One of the most common and most effective methods of testing if an item is gold or not is by using nitric ac However as
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Apr 24 32 Pour the acid and bleach mixture into the plastic bowl with the ore grains and stir Allow four hours for the gold to dissolve stirring every 20 minut The chlorine reacts with the gold inside the ore to form gold chloride Filter the ore and bleach solution to remove Gold is usually found alone or alloyed with mercury or silver but can also be found in ores such as calaverite sylvanite nagyagite petzite and krennerite Most gold ore now comes from either open pit or underground min The ores sometimes contain as little as 5/100 of an ounce of gold
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Jan 25 32 Nitric is usually the acid of choice to dissolve silver as it s easy to recover the only other acid that leaps to mind is sulphuric but that s not so easy to deal with We need more details of what your working with to have some idea as to what to suggest to avoid any problemsAug 31 32 If some of the metal dissolves then the gold is not pure or is mixed with other forms of metal to form an alloy Muriatic acid will corrode other forms of metal but not gold which is why whatever does not dissolve is gold If there is no reaction then the gold is pure or equivalent to 24 karats
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However with the right knowledge experience and tools you can remove valuable gold from computer parts other discarded electronics Things You Will Need Scrap electronics Rubber gloves Rubber apron Goggles Hydrogen Peroxide 3 I got from local pharmacy Muriatic acid 31 local hardware storeIf at all purple gold is present in the ore and the relative amount may be approximately deduced This method takes little time and is trustworthy Copper Copper is a very easy mineral to test for First crush the ore and dissolve it in nitric acid by heating Then dilute with some water and add ammonia
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When reviewing Methods of Eliminating Copper from Gold Ores we see that several methods have been suggested to eliminate copper from ores prior to cyanidation Preliminary extraction of the copper with sulphuric or sulphurous acids may be applicable to ores containing oxidized copper minerals such as malachite azurite and chrysocolla but these acids have but little effect on sulphide copper Oct 29 32 Extracting gold and silver from ore Cavan Horazona Also when we were panning the was a lot of sulfites to where the water was really weak sulfuric ac Music What Gold Ore Looks
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This is an alternate method to using AquaRegia The problem with using acids like this with gold ore is that other metals are almost always present in the ore with the gold so once you dissolve the gold into solution other metals are also spoiling the mix which makes removing the gold even harder to do Sulfuric Acid will not dissolve goldOct 14 32 There are things that I like to use nitric acid for and when I need it I just make my own batch up to use It is easy and in fact I have another batch mixing up in the wash room so I can do some silver refining or gold stripping by dissolving the base metals from under a gold plated surface
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Things That You Can Use Acids and Bases For Any strong acid can be used for cleaning ore or concentrat However there are reasons why you should use one or the other but not just any one I cannot give you a recipe for cleaning gold bearing materials It depends too much on what is in these materials that is making cleaning necessaryThings That You Can Use Acids and Bases For Any strong acid can be used for cleaning ore or concentrat However there are reasons why you should use one or the other but not just any one I cannot give you a recipe for cleaning gold bearing materials It depends too much on what is in these materials that is making cleaning necessary
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Abstract The hydrometallurgical leaching of native gold from gold bearing ores or the dissolution of gold metal during the recycling of electronic and precious metal scrap is performed every day using hazardous chemicals such as sodium cyanide or aqua regiaJul 12 32 Took 5 calcite rocks and dissolved them in muriatic acid to try to expose crystals I was super thrilled with one What s Inside Dissolving 5 Rocks in Acid meMiner Crushing hi grade gold
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Metallic gold does not dissolve in strong sulphuric acid unless a little nitric acid is added when a yellow liquid is formed which when diluted with water deposits the metal as a violet or brown powder The mixture of nitric and sulphuric acids is a more rapid solvent for gold than nitric acid aloneApr 24 32 How to Test for Gold Ore The aqua regia will react—bubble and fizz—if it contacts gold The acid will turn the same color when the purity of the ore sample matches the test wire Aqua regia dissolves gold so do not put it directly on your sample How to Use Bleach on Gold Ore to Remove Gold
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Aqua regia dissolves gold though neither constituent acid will do so alone because in combination each acid performs a different taskNitric acid is a powerful oxidizer which will actually dissolve a virtually undetectable amount of gold forming gold ions Au 3 The hydrochloric acid provides a ready supply of chloride ions Cl − which react with the gold ions to produce So you ve got a bunch of scrap that contains gold as well as a lot of other metals Here is how to reclaim that gold and end up with 99 pure gold The process is to dissolve all of the base metals in acid and leave behind the gold then purify the gold even further
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Nitric Acid is the only agent that will dissolve salts and base metals without dissolving fairly pure gold Unless we thoroughly wash our ore with nitric acid we will not be eliminating anything Apr 08 32 To remove gold from circuit boards start by purchasing concentrated nitric acid from an industrial or chemical store You’ll also need a face mask safety glasses and industrial gloves to work with nitric acid since it can harm your skin and eyes and cause nausea if it’s inhaled
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