Study on the Effect of Slurry Mass Concentration on the Flotation Effect of High Calcite Fluorite
To explore the effect of slurry mass concentration on the flotation effect of high calcite fluorite,under the condition that the grinding fineness was-0.074 mm content accounts for 70%,the effects of different slurry mass concentrations on the recovery rate and grade of fluorite were systematically studied by the slurry mass concentration test in the stages of roughing,scavenging,cleaning,cleaning-roughing and cleaning-scavenging.The test results show that the appropriate slurry mass concentration can significantly improve the fluorite grade and fluorite recovery rate,especially in the roughing stage.Aiming at the problems of high calcite content and easy mudding,the flotation process is optimized by controlling the combination of slurry mass concentration,cleaning-roughing and cleaning-scavenging,which reduces the circulation of middle ore and improves the utilization efficiency of resources.Under the optimum conditions,fluorite concentrate with CaF2 grade of 97.84%and recovery rate of 85.97%is obtained by closed-circuit test.The research results emphasize the importance of slurry mass concentration to improve flotation efficiency,and provide practical guidance and theoretical support for the same type of fluorite beneficiation process.
High calcite fluoriteSlurry mass concentrationFlotation processGradeRecovery rate