Abstract: The gold particle in a quartz-vein type gold ore with low sulfur in Shandong is uniform granularity，and exists in pyrite or quartz，in form of fissure gold and inclusion gold. Research of the technical conditions for grinding and separation of the ore showed that under the grinding fineness of -0.074 mm 80%，gold concentrate with gold grade of 61.33 g/t，and recovery of 93.73% was achieved by the process of one roughing，two scavengings，two cleanings and middles back to the process in turn.

Key words: Gold ore, Flotation, Butyl xanthate + ammonium butyl aerofloat