Method for enhancing selectivity and recovery in the fractional flotation of particles in a flotation column
Abstract
The method relates to particle separation from a feed stream. The feed stream is injected directly into the froth zone of a vertical flotation column in the presence of a counter-current reflux stream. A froth breaker generates a reflux stream and a concentrate stream, and the reflux stream is injected into the froth zone to mix with the interstitial liquid between bubbles in the froth zone. Counter-current flow between the plurality of bubbles and the interstitial liquid facilitates the attachment of higher hydrophobicity particles to bubble surfaces as lower hydrophobicity particles detach. The height of the feed stream injection and the reflux ratio may be varied in order to optimize the concentrate or tailing stream recoveries desired based on existing operating conditions.
- Inventors:
-
- Bethel Park, PA
- Issue Date:
- Research Org.:
- National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1026662
- Patent Number(s):
- 7992718
- Application Number:
- 12/552,550
- Assignee:
- The United States of America as represented by the United States Department of Energy (Washington, DC)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B03 - SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS B03D - FLOTATION
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
Citation Formats
Klunder, Edgar B. Method for enhancing selectivity and recovery in the fractional flotation of particles in a flotation column. United States: N. p., 2011.
Web.
Klunder, Edgar B. Method for enhancing selectivity and recovery in the fractional flotation of particles in a flotation column. United States.
Klunder, Edgar B. Tue .
"Method for enhancing selectivity and recovery in the fractional flotation of particles in a flotation column". United States. https://www.osti.gov/servlets/purl/1026662.
@article{osti_1026662,
title = {Method for enhancing selectivity and recovery in the fractional flotation of particles in a flotation column},
author = {Klunder, Edgar B},
abstractNote = {The method relates to particle separation from a feed stream. The feed stream is injected directly into the froth zone of a vertical flotation column in the presence of a counter-current reflux stream. A froth breaker generates a reflux stream and a concentrate stream, and the reflux stream is injected into the froth zone to mix with the interstitial liquid between bubbles in the froth zone. Counter-current flow between the plurality of bubbles and the interstitial liquid facilitates the attachment of higher hydrophobicity particles to bubble surfaces as lower hydrophobicity particles detach. The height of the feed stream injection and the reflux ratio may be varied in order to optimize the concentrate or tailing stream recoveries desired based on existing operating conditions.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Aug 09 00:00:00 EDT 2011},
month = {Tue Aug 09 00:00:00 EDT 2011}
}
Works referenced in this record:
Selective detachment process in column flotation froth
journal, May 2006
- Honaker, Rick Q.; Ozsever, Ahmet V.; Parekh, B. K.
- Minerals Engineering, Vol. 19, Issue 6-8
Collection of hydrophobic particles in the froth phase
journal, March 2002
- Ata, Seher; Ahmed, Nafis; Jameson, Graeme J.
- International Journal of Mineral Processing, Vol. 64, Issue 2-3