Abstract: To improve the beneficiation recovery of Wangershan gold ore, in light of the properties of the mill-feed ore, a large number of small laboratory tests and an industrial test on multiple reagent regime were carried out. The research and production application show that when a reagent multiple regime is used to replace the conventional single reagent regime for gold separation, the recovery of oxide ore can be improved by 4.45 percentage points and that of sulfide ore by 0.70 percentage point at a basically similar concentrate grade. As a result, the beneficiation cost is effectively reduced, indicating good economic benefit.

Key words: Gold ore, Multiple reagent system, Single reagent system