Abstract: Large amount of water is consumed during bendficiation production.In order to response to the national environmental policy and realize closed cycle，the characteristics and research status of recycling water in iron ore concentrator， non-ferrous metal concentrator， coal concentrator and non-metal concentrator are introduced， respectively. The utilization of coagulation precipitation method， neutralization method， adsorption method and membrane separation in high efficiency clarification of recycling water are discussed. It is pointed out that removal of soluble ions，residual agents and reduction of solid content in recycling water are the basic requirements for clarification and reuse of recycling water.Different recycling water should be treated with different method， generally with combined technology. New and efficient clarification technology and process developed to improve the existing recycling water system would be the focus and hot direction in promoting green mine construction.

Key words: Concentrator, Recycling water, Study status, Purifying technology