Abstract: There is 3.04 g/t gold in a gold-bearing quartz vein-type gold ore from Guizhou，gold in sulfide minerals and monomer gold are main exist form of gold，round-granular，lamellar and granular are gold output forms，and fine disseminated.Beneficiation experiments were conducted to efficiently recover the gold.The results indicated that，at grinding fineness of 55.6% passing 0.074 mm，by Nielsen separator gravity separation，Nielsen gravity separation concentrate of gold grade 236.01 g/t and recovery rate 26.39% was obtained.Regrinding Nielsen centrifugal separator gravity tailings to 80.44% passing 0.074 mm，via one roughing-three cleaning-two scavenging and middlings back to the flow-sheet in turn process，gold flotation concentrate with gold grade and recovery of 41.37 g/t and 57.84% respectively，total concentrate with gold grade and recovery of 55.78 g/t and 84.23% respectively was obtained.

Key words: Quartz-vein type gold, Nielsen centrifugal separator, Gravity, Flotation