Abstract: In order to make comprehensive use of the downhole wastewater,Hunan Chenzhou Mining Co.Ltd conducted an experimental study on the application of downhole wastewater in the goldantimonytungsten symbiotic ore dressing.The results show that downhole wastewater has no effect on goldantimony mixed flotation,but it has a great effect on wolframite flotation at room temperature.When the amount of sodium hydroxide is increased by 253 g/t and the sodium silicate is increased from 494 g/t to 933 g/t in roughing,the downhole wastewater can meet the requirements of scheelite flotation at room temperature.The recovery rate of gold,antimony and tungsten and the main technical and economic indexes of the dressing plant were not affected after the downhole wastewater was used in the dressing plant.After the transformation,effectively solved the problem of water shortage in dry season.

Key words:  , Downhole wastewater,Gold antimony mixed flotation,Scheelite flotation,Sodium hydroxide,Sodium silicate