skip to main content
DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

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. 23 figures.

Inventors:
; ;
Issue Date:
OSTI Identifier:
7032153
Patent Number(s):
4981582 A
Application Number:
PPN: US 7-148871
Assignee:
Virginia Tech Intellectual Properties, Inc., Blacksburg, VA (United States) PTO; EDB-94-106559
DOE Contract Number:  
FG22-83PC60806
Resource Type:
Patent
Resource Relation:
Patent File Date: 27 Jan 1988
Country of Publication:
United States
Language:
English
Subject:
01 COAL, LIGNITE, AND PEAT; COAL; DEASHING; FLOTATION; AERATION; BUBBLES; COAL PREPARATION; DESIGN; MATERIALS HANDLING EQUIPMENT; SEPARATION EQUIPMENT; CARBONACEOUS MATERIALS; ENERGY SOURCES; EQUIPMENT; FOSSIL FUELS; FUELS; MATERIALS; SEPARATION PROCESSES; 010300* - Coal, Lignite, & Peat- Preparation- (1987-)

Citation Formats

Yoon, R.H., Adel, G.T., and Luttrell, G.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, R.H., Adel, G.T., & Luttrell, G.H. Process and apparatus for separating fine particles by microbubble flotation together with a process and apparatus for generation of microbubbles. United States.
Yoon, R.H., Adel, G.T., and Luttrell, G.H. Tue . "Process and apparatus for separating fine particles by microbubble flotation together with a process and apparatus for generation of microbubbles". United States.
@article{osti_7032153,
title = {Process and apparatus for separating fine particles by microbubble flotation together with a process and apparatus for generation of microbubbles},
author = {Yoon, R.H. and Adel, G.T. and Luttrell, G.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. 23 figures.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1991},
month = {1}
}