temperature that is needed to end up with stronger gold, because naturally, gold is way too soft to be used. Normally, it is advisable to use other alloy metals such as zinc, copper, silver during the melting process. Gold will always boil at a temperature of 5, 173 degrees Fahrenheit....
Leaching of the precipitate using sulfuric or nitric acids may be required in the event where there are high levels of copper present. Iron Removal: Before smelting, to dissolve iron from the electrowinning cathodes, nitric acid or forced air oven oxidation can also be used. Gravity concentrates...