Hydrometallurgy: Leaching in Heap, Vat, CIL, CIP, Merrill–Crowe, SX Solvent Extraction

Hydrometallurgy: Leaching in Heap, Vat, CIL, CIP, Merrill–Crowe, SX Solvent Extraction 2017-04-04T06:57:36+00:00
  • To participate in the 911Metallurgist Forums, be sure to JOINLOGIN
  • Use Add New Topic to ask a New Question/Discussion about Hydrometallurgy.
  • 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.

How to prevent and stop settling in leaching tanks (1 reply)

Maya Rothman
2 years ago
Maya Rothman 2 years ago

I would like to know if anyone has ideas on how to reduce settling of materials in leaching tanks. The plant is a gold production plant and the ore treated are oxide and fresh rock.

Sturmbann
2 years ago
Sturmbann 2 years ago

There are two factors that you need to balance, the settling rate, which is a factor of pulp density and rheology, and the lift from the agitator.
http://is.gd/raVkGn

This may help you understand. I suggest you talk to the supplier of your agitator system.

What you need to establish is a homogeneous slurry, that has the about the same density sg as the slurry. For most sands this is about 1.4, so you need about 40-50%solids, for a rock density of 2.8-3.2. The power factor of the agitator can be increased but only by increasing motor size, gearbox, and tank baffles, and may have to be changed if they are not sufficient to keep the slurry agitated. (I am assuming that you have mechanically agitated tanks rather than air agitated pachuccas) but the theory is similar.

If the pulp density is too low then the solids will drop out of suspension. This can happen with coarse gold if it is over-ground. I'd suggest that you try raising the slurry until the agitator begins to trip. This will identify the scope of control that you have then if more power is needed look to see what other factors can be adjusted. If you have facilities to do a Google search look up agitator power in chemical engineering?

Often the first change is to change the pitch and shape of the agitators, but this is where your agitator supplier can assist.


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.

Need ENGINEERING Services or Plant TROUBLESHOOTING?

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.