Abstract: According to the ore properties of a skarn scheelite from henan, studied the suitable gringding fineness, roughing test conditons of scheelite after flotation desulfurization and cleaning test conditons of crude scheelite concentrate. Based on those conditions, carried out the flowsheet of one stage grinding, once roughing once cleaning pre-desulfurization, three times roughing of scheelite,  thickening-desliming of scheelite rough concentrate, twice cleaning once scavenging, and get the scheelite concentrate with WO₃ grade 52.15%, recovery 70.53%.

Key words: Skarn scheelite, Preferential flotation, Impurity removal