Abstract: Molybdenum is mainly molybdenite and tungsten is mainly scheelite in a domestic molyb⁃ denum-tungsten ore. In order to determine a reasonable beneficiation process，the beneficiation test is car⁃ ried out on the basis of the study of ore properties.The test results show that the main process is molybde⁃ num-sulfur full flotation first，then tungsten flotation at room temperature，and molybdenum-sulfur full flo⁃ tation rough concentrate and tungsten rough concentrate are obtained respectively.Molybdenum concentrate is obtained by cleaning selection of molybdenum-sulfur full flotation concentrate，and scheelite concen⁃ trate is obtained by heating and cleaning selection of tungsten flotation concentrate at room temperature af⁃ ter concentration.The loss of coarse molybdenum is controlled by grinding through 50 mesh sieve.Under the conditions of raw ore WO3 grade of 0.22%，molybdenum grade of 0.43%，grinding fineness of -0.074 mm 55.21%，molybdenum concentrate with molybdenum grade of 46.85% and molybdenum recovery of 93.70% can be obtained through the whole process closed-circuit test. Tungsten concentrate with WO3 grade of 65.21% and WO3 recovery of 68.17% is obtained. The effective recovery of molybdenum and tung⁃ sten is realized，which can provide technical basis for production.

Key words: molybdenite, scheelite, flotation, heating selection