Gravity Separation & Concentration Methods

Gravity Separation & Concentration Methods 2017-04-04T06:57:23+00:00
  • To participate in the 911Metallurgist Forums, be sure to JOINLOGIN
  • Use Add New Topic to ask a New Question/Discussion about Gravity Separation/Concentration.
  • 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.

Cyclone underflow classification of gravity concentrator feed (2 replies)

6 months ago
vekian 6 months ago

We have 2 discharge pipes from the cyclone underflow. 1 is a smaller diameter pipe going to gravity/scalping screens which then classify the product. Oversize from these screens report to mill discharge hopper. Undersize reports to gravity concentrators. A larger (separate) pipe carries the bulk of the cyclone underflow to the mill feedhead chute. for regrind. Some of this product from the larger diameter pipe may be suitable for gravity concentrators

My question is: Would it be advantageous to have a screen (or double deck screen) receiving ALL of the cyclone underflow? Undersize product from the screen deck/s would report directly to gravity concentrators. Oversize would report to the mill feed end. 

Has anyone got or seen this type of set-up? 

Paul Morrow
5 months ago
Paul Morrow 5 months ago

You may exceed the rated capacity of your gravity concentrator. I do not believe you will gain much, if anything.

Do you have a gold assay of your cyclone overflow & underflow? What is your current gold recovery by gravity VS the tested GRG values?

3 months ago
David 3 months ago


I'd be interested in this. Do you have answers to Paul's query?

Please join and login to participate and leave a comment.

BUY Laboratory & Small Plant Process Equipment

We have all the laboratory and plant equipment you need to test or build/operate your plant.

ENTER our Mining Equipment' Store

We Sell EQUIPMENT for all types of Mineral Treatment PROCESSES and Laboratory Testing needs

Have a Mineral Processing QUESTION?

Come in, ask your question

911Metallurgist Community Forums

Talk to other metallurgists and be helped.


We can IMPROVE ALL PLANTS / Mineral Processing Engineering & LABORATORY Ore Testing

911Metallurgy Engineering

Contact us for process engineering, metallurgical investigations, plant optimization, plant troubleshooting, needs. WE “FIX” METALLURGY.