Froth Flotation (Sulphide & Oxide)

Froth Flotation (Sulphide & Oxide)

  • To participate in the 911Metallurgist Forums, be sure to JOINLOGIN
  • Use Add New Topic to ask a New Question/Discussion about Flotation.
  • OR Select a Topic that Interests you.
  • Use Add Reply = to Reply/Participate in a Topic/Discussion (most frequent).
    Using Add Reply allows you to Attach Images or PDF files and provide a more complete input.
  • Use Add Comment = to comment on someone else’s Reply in an already active Topic/Discussion.

the change in nature of the ZnS and PbS concentrate (3 replies)

Azadeh
5 years ago
Azadeh 5 years ago

Hi Dear friends

is it possible that the nature of the PbS and ZnS concentrates change during a period of 6 months or more? the concentrates are dumped in an open area with no cover.

thank you all

J
Jorge
5 years ago
Jorge 5 years ago
1 like by David

It is possible to expect some degree of oxidation. One of the key aspects is the weather conditions. For example a rainy place tend to increase the superficial alteration. The formation of surface films and their subsequent dissolution can be observed. Sphalerite particles can show a white hairy texture. The duration of each active or passive period  is a measure of time for which sulphides are dissolved or the dissolution is inhibited. The presence of pyrite in the concentrate is other point to consider.

D
Dave Tahija
5 years ago
Dave Tahija 5 years ago

If there is any pyrite in the concentrate and moisture is present, galena can react as the anode in a pyrite-galena galvanic cell. A recent description of the reaction is in:

http://www.minproc.pwr.wroc.pl/journal/pdf/ppmp53-2.846-858.pdf

This results in galena particles acquiring coatings of lead carbonate and lead sulphate.

 

N
naveen.singani
4 years ago
naveen.singani 4 years ago

yes, indeed. we have faced same problem with oxidation due to placing in open area in rainy season. we did not achieved targeted results during the treatment.

Please join and login to participate and leave a comment.