Process and apparatus for separating fine particles by microbubble flotation together with a process and apparatus for generation of microbubbles
Patent
·
OSTI ID:867663
- Blacksburg, VA
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.
- Research Organization:
- Virginia Tech Intellectual Properties, Inc. (Blacksburg, VA)
- DOE Contract Number:
- FG22-83PC60806
- Assignee:
- Virginia Tech Intellectual Properties, Inc. (Blacksburg, VA)
- Patent Number(s):
- US 4981582
- OSTI ID:
- 867663
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
/209/210/261/
accomplished
apparatus
aspect
aspect ratio
coal
column
countercurrent
disclosed
efficient
efficiently
especially
especially coal
fine
fine particle
fine particles
flotation
flotation column
flotation separation
froth
generating
generating microbubbles
generation
generator
gently
gently wash
in-line
in-line static
inexpensive
inexpensive manner
manner
method
microbubble
microbubble flotation
microbubbles
particles
porous
porous tube
process
processes
produce
purity
ratio
recovery
separating
separating fine
separation
static
static generator
tube
unique
unique processes
wash
wash water
water
accomplished
apparatus
aspect
aspect ratio
coal
column
countercurrent
disclosed
efficient
efficiently
especially
especially coal
fine
fine particle
fine particles
flotation
flotation column
flotation separation
froth
generating
generating microbubbles
generation
generator
gently
gently wash
in-line
in-line static
inexpensive
inexpensive manner
manner
method
microbubble
microbubble flotation
microbubbles
particles
porous
porous tube
process
processes
produce
purity
ratio
recovery
separating
separating fine
separation
static
static generator
tube
unique
unique processes
wash
wash water
water