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Title: Apparatus and process for the separation of hydrophobic and hydrophilic particles using microbubble column 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 and coarse particles, especially coal and minerals, so as to produce high purity and high recovery efficiency. This is accomplished through the use of a flotation column, microbubbles, recycling of the flotation pulp, and countercurrent wash water to gently wash the froth. Also disclosed are unique processes and apparatus for generating microbubbles for flotation in a highly efficient and inexpensive manner using either a porous tube or in-line static generators. 14 figs.

Inventors:
; ;
Issue Date:
OSTI Identifier:
7206495
Patent Number(s):
5167798 A
Application Number:
PPN: US 7-574794
Assignee:
Virginia Tech Intellectual Properties, Inc., Blacksburg, VA (United States) PTO; EDB-94-086115
DOE Contract Number:  
FG22-83PC60806
Resource Type:
Patent
Resource Relation:
Patent File Date: 30 Aug 1990
Country of Publication:
United States
Language:
English
Subject:
01 COAL, LIGNITE, AND PEAT; COAL; FLOTATION; BUBBLES; COAL PREPARATION; SEPARATION EQUIPMENT; WETTABILITY; CARBONACEOUS MATERIALS; ENERGY SOURCES; FOSSIL FUELS; FUELS; MATERIALS; SEPARATION PROCESSES; 010300* - Coal, Lignite, & Peat- Preparation- (1987-)

Citation Formats

Yoon, R.H., Adel, G.T., and Luttrell, G.H. Apparatus and process for the separation of hydrophobic and hydrophilic particles using microbubble column flotation together with a process and apparatus for generation of microbubbles. United States: N. p., 1992. Web.
Yoon, R.H., Adel, G.T., & Luttrell, G.H. Apparatus and process for the separation of hydrophobic and hydrophilic particles using microbubble column flotation together with a process and apparatus for generation of microbubbles. United States.
Yoon, R.H., Adel, G.T., and Luttrell, G.H. Tue . "Apparatus and process for the separation of hydrophobic and hydrophilic particles using microbubble column flotation together with a process and apparatus for generation of microbubbles". United States.
@article{osti_7206495,
title = {Apparatus and process for the separation of hydrophobic and hydrophilic particles using microbubble column 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 and coarse particles, especially coal and minerals, so as to produce high purity and high recovery efficiency. This is accomplished through the use of a flotation column, microbubbles, recycling of the flotation pulp, and countercurrent wash water to gently wash the froth. Also disclosed are unique processes and apparatus for generating microbubbles for flotation in a highly efficient and inexpensive manner using either a porous tube or in-line static generators. 14 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1992},
month = {12}
}