Process and apparatus for separating fine particles by microbubble flotation together with a process and apparatus for generation of microbubbles
Patent
·
OSTI ID:7032153
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. 23 figures.
- DOE Contract Number:
- FG22-83PC60806
- Assignee:
- Virginia Tech Intellectual Properties, Inc., Blacksburg, VA (United States)
- Patent Number(s):
- US 4981582; A
- Application Number:
- PPN: US 7-148871
- OSTI ID:
- 7032153
- Country of Publication:
- United States
- Language:
- English
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