Abstract: Experimental study was done on beneficiation of a gold mine in Xinjiang which belongs to carbonaceous granule disseminated type hard dressing gold mine. Result indicated: good flotation indexes of grade 77.42g/t , recovery rate 63.10% of gold could get by open line test which adopted stage grinding-stage flotation process and taken copper sulfate as activator, butyl xanthate and ammonium butyl aerofloat as collector.

Key words: Refractory gold mine, Flotation, Stage grinding, Stage flotation, Open line test