Gold extraction refers to the processes required to extract gold from its ores. This may require a Contents. [hide]. 1 History. 1.1 Industrial era. 2 Types of ore; 3 Concentration; 4 Leaching; 5 Refractory gold processes; 6 Gold smelting.
Two types of gold ores were subjected to iodideiodine leaching at room temperature. In contrast, gold extraction from the oxide ore in a solution containing 20 gL iodide and 4 gL iodine reached 77% in 6 h and 89% in + Related Content.