Patent Number: 6,422,393

Title: Recovery from fine froth flotation feed (slimes)

Abstract: A process for the recovery of minerals from the fine particle size fraction of froth flotation feed (slimes), which is conventionally discarded to waste because slimes interfere with efficient flotation. In the disclosed process, the slimes, which also may be termed fines, are scrubbed to clean the slimes, and are then subjected to conventional froth flotation. The scrubbing is done in the presence of an attrition media, in addition to chemical reagents for cleaning and dispersing fine particles. Thus an inert attrition media, of larger particle size than the slimes, is introduced into a scrubber. The process accordingly recovers a fine fraction of the flotation feed that is normally lost. The recovery process may be incorporated into an existing plant design, or as part of a new plant designed to recover material previously discarded in waste disposal areas.

Inventors: Van Jahnke; Jeffrey (Asheville, NC)


International Classification: B03D 1/02 (20060101); B03D 1/00 (20060101); B03D 001/02 (); B02C 023/10 ()

Expiration Date: 07/23/2010