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Title: Process and apparatus for separating fine particles by microbubble flotation together with a process and apparatus for generation of microbubbles

Abstract

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.

Inventors:
 [1];  [1];  [1]
  1. (Blacksburg, VA)
Issue Date:
Research Org.:
Virginia Tech Intellectual Properties, Inc. (Blacksburg, VA)
OSTI Identifier:
867663
Patent Number(s):
4981582
Assignee:
Virginia Tech Intellectual Properties, Inc. (Blacksburg, VA) NETL
DOE Contract Number:  
FG22-83PC60806
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
process; apparatus; separating; fine; particles; microbubble; flotation; generation; microbubbles; method; disclosed; separation; especially; coal; produce; purity; recovery; efficiently; accomplished; aspect; ratio; column; countercurrent; wash; water; gently; froth; unique; processes; generating; efficient; inexpensive; manner; porous; tube; in-line; static; generator; especially coal; flotation column; microbubble flotation; fine particles; aspect ratio; porous tube; separating fine; fine particle; unique processes; wash water; inexpensive manner; in-line static; generating microbubbles; gently wash; flotation separation; static generator; /209/210/261/

Citation Formats

Yoon, Roe-Hoan, Adel, Gregory T., and Luttrell, Gerald H. Process and apparatus for separating fine particles by microbubble flotation together with a process and apparatus for generation of microbubbles. United States: N. p., 1991. Web.
Yoon, Roe-Hoan, Adel, Gregory T., & Luttrell, Gerald H. Process and apparatus for separating fine particles by microbubble flotation together with a process and apparatus for generation of microbubbles. United States.
Yoon, Roe-Hoan, Adel, Gregory T., and Luttrell, Gerald H. Tue . "Process and apparatus for separating fine particles by microbubble flotation together with a process and apparatus for generation of microbubbles". United States. https://www.osti.gov/servlets/purl/867663.
@article{osti_867663,
title = {Process and apparatus for separating fine particles by microbubble flotation together with a process and apparatus for generation of microbubbles},
author = {Yoon, Roe-Hoan and Adel, Gregory T. and Luttrell, Gerald H.},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1991},
month = {1}
}

Patent:

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