Abstract: A gold ore in Guangxi is a micro-disseminated primary gold ore with high arsenic and organic carbon content and mainly in form of inclusion gold. Flotation tests were carried out to determine the mineral processing technology. The results showed that in the condition of grinding fineness of -200 mesh accounting for 85%， copper sulfate was taken as the activator， and butyl xanthate and butylamine dithiophosphate were taken as combined collectors of gold mineral and gold-bearing mineral. Gold concentrate with gold grade of 31.50 g/t and gold recovery rate of 86.57% was obtained after a closed-circuit flotation process containing one roughing-two cleaning-three scavenging process. The regulation of reagent and technological process are simple， which achieve better mineral processing indexes.A gold ore in Guangxi is a micro-disseminated primary gold ore with high arsenic and organic carbon content and mainly in form of inclusion gold. Flotation tests were carried out to determine the mineral processing technology. The results showed that in the condition of grinding fineness of -200 mesh accounting for 85%， copper sulfate was taken as the activator， and butyl xanthate and butylamine dithiophosphate were taken as combined collectors of gold mineral and gold-bearing mineral. Gold concentrate with gold grade of 31.50 g/t and gold recovery rate of 86.57% was obtained after a closed-circuit flotation process containing one roughing-two cleaning-three scavenging process. The regulation of reagent and technological process are simple， which achieve better mineral processing indexes.

Key words: Carlin-type gold deposit, Primary gold ores, High arsenic and organic