Research Status of difficult-to-float coal slime treatment with cyclone micro bubble flotation column
The cyclonic micro bubble flotation column has better separation effect than the traditional flotation equipment in the separation of fine coal slime due to its small bubble size and strong secondary enrichment effect of foam.However,for other difficult-to-float coal slimes,such as flotation feed with high solid concentration and wide particle size composition,especially when coal quality fluctuations occur in many coal preparation plants selected for coal blending,the flotation effect of the cyclone microbubble flotation column is not ideal,which limits the application of the cyclone microbubble flotation column.We reviewed the research progress in improving the structure of cyclone microbubble flotation columns,and analyzed the separation effects of the columns with different structures on three types of difficult-to-float coal slimes,including micro fine coal slime,high concentration coal slime,and slime with wide size range,proposed optimization measures of the structures,thus to enhance performance of the columns dealing with flotation feed with varied properties.
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