gold | Gold Refining Students | Britannica Kids ...
gold Gold Refining The gold yielded by oredressing processes remains alloyed with silver and trace impurities. It may be refined, or purified, by several is one method. Anodes of crude gold from the mines and cathodes of pure gold are suspended in an electrolyte of gold chloride and hydrochloric acid. When electric current is applied, gold dissolves from the anodes ...