Process and apparatus for separating fine particles by microbubble flotation together with a process and apparatus for generation of microbubbles
Virginia Tech Intellectual Properties, Inc.
Adel, Gregory T.
Luttrell, Gerald H.
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A method and apparatus are disclosed for the microbubble flotation separation of very fine particles, especially coal, so as to produce a high purity and large recovery efficiently. This is accomplished through the use of a high aspect ratio flotation column, microbubbles, and a countercurrent use of wash water to gently wash the froth. Also, disclosed are unique processes and apparatus for generating microbubbles for flotation in a high efficient and inexpensive manner using either a porous tube or an in-line static generator.
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