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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:
Research Org.:
Virginia Polytechnic Institute and State University
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
672629
Patent Number(s):
5,814,210
Application Number:
PAN: 8-641,778
Assignee:
Virginia Tech Intellectual Properties, Inc., Blacksburg, VA (United States) PTO; SCA: 010300; PA: EDB-98:117040; SN: 98002026817
DOE Contract Number:  
FG22-83PC60806
Resource Type:
Patent
Resource Relation:
Other Information: PBD: 29 Sep 1998
Country of Publication:
United States
Language:
English
Subject:
01 COAL, LIGNITE, AND PEAT; COAL PREPARATION; FLOTATION; SEPARATION EQUIPMENT; DESIGN; OPERATION; BUBBLES; EFFICIENCY

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., 1998. 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_672629,
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 = {1998},
month = {9}
}