Use of ozone to increase the flotation efficiency of sulfide...

Details Use of ozone to increase the flotation efficiency of sulfide... Use of ozone to increase the flotation efficiency of sulfide...

2006-12-26

2006-12-26

Lithgow, Thomas M. (Department: 1724)

Classifying, separating, and assorting solids

Fluid suspension

Liquid

C209S167000

Reexamination Certificate

active

07152741

ABSTRACT:
The use of ozone during certain stages of metal separation by flotation degrades certain collectors that are absorbed on the particle surface, as well as the collectors and frothers in the liquid slurry. As a result, the mineral particle has a fresh surface and new chemical reagent(s) can be added in the subsequent flotation step(s). Also since ozone oxidizes the iron sulfide particles faster than the other mineral particles, depending upon the duration of treatment, the ozone concentration, and the kg O3/ton consumed by the treated ore, the surface of the iron sulfide particles may be partially or even totally oxidized, thus allowing better separation. As a consequence, the iron content is decreased, and the grade of the mineral value such as zinc, copper, and nickel increases. Also, sulfide emissions during heat treatment or further processing of the minerals are decreased due to decrease iron sulfide content.

REFERENCES:
patent: 1869532 (1932-08-01), Weinig
patent: 1893517 (1933-01-01), Gaudin
patent: 2898196 (1959-08-01), Forward et al.
patent: 3539002 (1970-11-01), Last
patent: 4139455 (1979-02-01), Griffith et al.
patent: 4830738 (1989-05-01), White et al.
patent: 5068028 (1991-11-01), Miller et al.
patent: 5110455 (1992-05-01), Huch
patent: 5122261 (1992-06-01), Hollingsworth
patent: 5687609 (1997-11-01), Schmalzel
patent: 5807479 (1998-09-01), Arbiter
patent: 5902977 (1999-05-01), Arbiter
patent: 6036025 (2000-03-01), Clark et al.

Affiliated with

Also associated with

Rating

Use of ozone to increase the flotation efficiency of sulfide... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Use of ozone to increase the flotation efficiency of sulfide..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Use of ozone to increase the flotation efficiency of sulfide... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3708167