Title:
METHOD FOR ENHANCING SELECTIVITY AND RECOVERY IN THE FRACTIONAL FLOTATION OF PARTICLES IN A FLOTATION COLUMN
Document Type and Number:
WIPO Patent Application WO/2011/028738
Kind Code:
A3
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:
KLUNDER EDGAR (US)
Application Number:
PCT/US2010/047418
Publication Date:
July 14, 2011
Filing Date:
September 01, 2010
Export Citation:
Assignee:
KLUNDER EDGAR (US)
International Classes:
B01D17/035; B03D1/20
Foreign References:
| US5814210A | 1998-09-29 | |||
| US20080308502A1 | 2008-12-18 | |||
| US7163105B2 | 2007-01-16 | |||
| US5525238A | 1996-06-11 |
Other References:
SEHER ATA ET AL., INT. J. OF MINER. PROCESS, vol. 64, 27 February 2002 (2002-02-27), pages 101 - 122
GRAEME J. JAMESON, COLLOIDS AND SURFACES A: PHYSICOCHEMICAL AND ENGINEERING ASPECTS, vol. 151, 5 March 1999 (1999-03-05), pages 269 - 281
GRAEME J. JAMESON, COLLOIDS AND SURFACES A: PHYSICOCHEMICAL AND ENGINEERING ASPECTS, vol. 151, 5 March 1999 (1999-03-05), pages 269 - 281
Attorney, Agent or Firm:
JONG, Tracy (Suite 3Rochester, New York, US)
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