Classifying – separating – and assorting solids – Fluid suspension – Liquid
Reexamination Certificate
2005-05-10
2005-05-10
Lithgow, Thomas M. (Department: 1724)
Classifying, separating, and assorting solids
Fluid suspension
Liquid
C209S166000
Reexamination Certificate
active
06889844
ABSTRACT:
The present invention relates to a process for improving the recovery of valuable sulphide minerals. The process involves determining an Eh range within which the valuable sulphide mineral may be recovered by flotation without the need of a collector. The slurry is then subjected to flotation in a pneumatic cell (50) at such a speed that the slurry remains within the Eh range during flotation. The process substantially reduces or totally eliminates the need for collector. For mixed ores such as chalcopyrite/chalcocite chalcopyrite is recovered without collector, while some non xanthate collector may be required to recover chalcocite.
REFERENCES:
patent: 4561970 (1985-12-01), Heimala et al.
patent: 3819985 (1985-08-01), None
patent: WO 9304783 (1993-03-01), None
patent: WO 9521698 (1995-08-01), None
patent: WO 9703754 (1997-02-01), None
Ahn et al, “Effect of grinding media-chalcopyrite interaction on the self-induced flotation of chalcopyrite”, International Journal of Mineral Processing, 33 (1991) pp. 243-262. Elsevier Science Publishers, Amersterdam.*
Kennedy, “The Jameson Flotation Cell”, Mining Magazine, Oct. 1990 pp. 281+.*
Trahar, “Pulp potential in sulfide flotation” in Principles of Mineral Flotation-The Work Symposium, (editors M. H. Jones and J. T. Woodcock), pp 117-135 (The Australasian Institute of Mining and Metallurgy: Melbourne).*
International Search Report for PCT/AU99/00772.
Manlapig Emmanuel Salvador Viana
Vargas Alfredo Percy
Lithgow Thomas M.
MIM Holdings Limited
LandOfFree
Collectorless flotation does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Collectorless flotation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Collectorless flotation will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3433910