gold purification using electricity. the use of electricity is one of the latest methods used for purifying gold. this process is commonly referred to as the wohlwill process. using this method the impure gold is placed in a solution made up of gold chloride and hydrochloric acid.
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how to refine gold. you may want to make some extra money by refining your own gold at home or you may be a jeweler who wants to refine gold in-house. there are multiple ways to refine gold on a small scale as long as you take appropriate
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the resulting product is a muddy substance that is almost pure gold (99.999% or 24k). this muddy substance is dried until it is a powdered residue and then heated with a torch or other source of heat to melt the gold powder into useable gold. the acids used for this process are nitric acid and hydrochloric acid. read more common gold questions.
after a sample of treated impure gold has been tested in a lab for purity the gold is melted in a furnace then chlorine is bubbled through the liquid. the chlorine attaches to elements in the gold that then become solid and move toward the top of the furnace. they are skimmed off. electrolysis is ultimately used to purify the gold.
in 1874 dr. emil wohlwill of the norddeutsche affinerie in hamburg germany developed a method to purify gold through electrolysis. the unpurified gold ore is fashioned into a 100-ounce anode whereas pure gold strips make up the cathode. the electrolyte solution is a mix of gold chloride and hydrochloric acid.