Abstract: The tungsten slime treatment system of Ninghua Xingluokeng tungsten plant has problems of high production cost，great difficulty in tungsten recovery and poor economic benefits. In order to solve the above problems，based on the study of ore properties，a new combined process of centrifuge gravity sepa⁃ ration (one roughing and one scavenging) -flotation (one roughing，two cleaning and one scavenging) was used to replace the original desulfurization-wolframite and scheelite mixed flotation-flotation，magnetic and gravity separation of wolframiteand scheelite separation process. The results show that the tungsten concen⁃ trate with WO3 grade of 55.23%，WO3 recovery rate of 89.71%，sulfur content of 0.69%，sulfur distribution rate of 3.46% and sulfur-containing minerals with sulfur grade of 45.22% and sulfur recovery rate of 85.37% were obtained by gravity separation and enrichment with centrifuge. The technical problem of efficient sepa⁃ ration of tungsten ore is solved，which not only improves the quality of tungsten concentrate，but also im⁃ proves the production environment of the concentrator，and the economic and environmental benefits are re⁃ markable.

Key words: tungsten ore, centrifuge gravity separation, grinding, flotation