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

Patent · Tue Dec 01 00:00:00 EST 1992

OSTI ID:7206495

Yoon, R H; Adel, G T; Luttrell, G H

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.

• DOE Contract Number: FG22-83PC60806
• Assignee: Virginia Tech Intellectual Properties, Inc., Blacksburg, VA (United States)
• Patent Number(s): US 5167798; A
• Application Number: PPN: US 7-574794
• OSTI ID: 7206495
• Resource Relation: Patent File Date: 30 Aug 1990
• Country of Publication: United States
• Language: English

Related Subjects

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-)