The collector of TW series for tungsten minerals is a new chelate collector for bulk flotation of wolframine and scheelite.The result of contrast test indicates that the effect of TW-705is the best for a kind of tungsten fine silt from a tungsten industry Co.Ltd in Jiangxi Province.Integrated open circuit of one-roughing,one-scavenging,two-cleaning has been carried out,the test result is WO3 content of 43.77%,WO3 recovery of 70.89% in contration.