关键词: 碳酸盐型, 方解石, 矿物学, 工艺流程, 药剂制度

Abstract: In order to effectively develop and utilize carbonate-type fluorite ore resources，aiming at the problems of extremely difficult separation of calcite and fluorite，unqualified product index of fluorite concentrate and low recovery rate of fluorite in the separation process of carbonate-type fluorite ore，based on a new project of carbonate-type fluorite concentrator in an alpine region，the mineralogy research，pro‐ cess flow test，product particle size screening and reagent system research of the ore in the mining area are carried out. The results show that the carbonate-type fluorite ore is difficult to be separated. On the one hand，the carbonate-type fluorite ore contains a large amount of calcite，and both calcite and fluorite belong to calcium-containing minerals. The surface physical and chemical properties of the two are extremely simi‐ lar. When coexisting in the solution，there is mutual transformation between minerals；on the other hand，it is due to the presence of a large amount of fine mud（-0.038 mm）.Based on the research results，when de‐ signing the process flow of the mining area，the crushing and grinding adopts three stage one closed-circuit crushing and screening + pre-screening before grinding + ball milling + closed-circuit classification，the pretreatment adopts enhanced slurry adjustment + pulp heating，the selection adopts two roughing + coarse tail desliming + two scavenging + eight cleaning + one cleaning scavenging + coarse concentrate regrinding + fine tail desliming，the collector adopts emulsified oleic acid，and the inhibitor adopts acidified water glass and tannin extract.

Key words: carbonate-type, calcite, mineralogy, process flow, reagent system