关键词: 方解石型, 萤石, 浮选

Abstract: The content of CaF₂ and CaCO₃ are 36.73% and 14.34%，respectively in a calcite-type fluorite ore. The valuable minerals are fluorite，and the main gangue minerals are quartz，calcite，kaolinite and feldspar. The flotation test study was carried out for efficient recovery of fluorite. The results showed that when the grinding fineness is -0.074 mm accounting for 70% with sodium carbonate as adjustment agent，water glass as inhibitor and BK410 as collector，the fluorite concentrate with CaF₂ grade of 90.32% and CaF₂ recovery rate of 77.11% could be obtained through the closed-circuit flotation of one roughing， eight cleaning，one scavenging and middling return in sequence. The process flow structure is simple and reasonable，and the flotation index is ideal.

Key words: calcite-type, fluorite, flotation