Froth Flotation (Sulphide & Oxide)

Froth Flotation (Sulphide & Oxide)2017-04-04T06:57:31-04:00
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recovering old tailings dump by froth flotation (2 replies and 1 comment)

2 years ago
Tate 2 years ago

Im recovering an old tailings dump using froth flotation . The circuit goes in this order Milling - flotation- thickening - CIP - Tails .how do i get rid of the froth bubbles from getting into the CIP section as these are posing huge problems even at the thickener. The reagents are BetaFroth(frother) , SIBX(collector) , Betacol(Co-collector). whats chemical can i use to destabilize the froth.

Todd H
2 years ago
Todd H 2 years ago


There are a couple of things you can do to get rid of froth but it can be difficult.  I ran a mill similar to this with major froth issues in the leach circuit.  Adding reagents such as anti-froth (defoamer) can add problems like carbon fouling so be careful.  Do some test leaches to determine if the anti-froth works without complication - see below

  1. Switch to an alcohol based frother if possible, they dont stay around as long.
  2. You can use preaeration to try and oxidize the frother reagent before leaching.
  3. You could use a PSA to supply oxygen instead of air to reduce volume supplied.

I have used a lot of defoamers and if you want try try something quick and easy go and buy some carpet cleaner defoamer (these are usually silicon emulsions).  Cytek has CYBREAK and CyQuest.  There is a difference between defoamers and antifoams - defoamers breakup existing froth and anti-frothers stop foam formation.


Todd Harvey - Global Resource Engineering

Richard S
2 years ago

Agree with your comments. You might also simply cut back on the amount of current frother you are using to see if that helps.

2 years ago
Tate 2 years ago

Woow thanks guys. Give me a week and i will share the feedback.

Kind Regards

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