Extracting Gold - Extracting Gold | HowStuffWorksLeaching dissolves the gold out of the ore using a chemical solvent. The most common solvent is cyanide, which must be combined with oxygen in a process.how to separate gold from ore,Crushing Ore to Recover GoldJun 11, 2012 . Crushing a small ore sample to recover the gold buried inside. This sample was found in a lode vein in Marion County, Oregon. The ore is.