The gold-antimony ore from Qinghai has a complex mineral composition,with gold primarily encapsulated in sulfides,oxides,and arsenopyrite,and antimony mainly present in stibnite and valentinite.The ore contains a high level of harmful arsenic,making it challenging to process.Mineralogical studies,flotation condition tests,and closed-circuit tests were conducted based on the characteristics of the ore.Under optimal separation conditions,the closed-circuit test yielded an antimony concentrate with a grade of 60.86 % and a recovery rate of 94.87 %,and a gold concentrate with a grade of 51.23 g/t and a recovery rate of 69.94 %.These promising results provide a reference for the beneficiation process development and utilization of this type of ore.