Dewatering: Thickening, Filtering, CCD, Water Treatment & Tailings Disposal

Dewatering: Thickening, Filtering, CCD, Water Treatment & Tailings Disposal2017-04-04T06:57:46-04:00
  • To participate in the 911Metallurgist Forums, be sure to JOINLOGIN
  • Use Add New Topic to ask a New Question/Discussion about Thickening, Filtering or Tailings and Water.
  • 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.

Acid Drainage treatment with limestone (9 replies)

(unknown)
4 years ago
(unknown) 4 years ago

Does anyone has information about acid mine drainage neutralization using limestone? The lab recommended lab tests? Information’s about column design? I would appreciate your help.

Obergruppenfuhrer
4 years ago
Obergruppenfuhrer 4 years ago

Here is a paper that I read some time ago hosted on the USGS website. It should be a start for you

http://mine-drainage.usgs.gov/pubs/ICARD_2000_Sibrell.pdf

Victor Bergman
4 years ago
Victor Bergman 4 years ago
(unknown)
4 years ago
(unknown) 4 years ago

If you want to repeat what thousands of people did before you, you can conduct another test. The pH will not increase above ca. 7.5 – 8 and it will take about 8 – 14 hours until you get the final pH. Always the same results without statistically significant differences. I will send you about 150 references which you can use to come up with your results. Also look to the "integrated limestone process".

Gruppen
4 years ago
Gruppen 4 years ago

Previous comment suggests that limestone treatment of AMD could well be standardized, taking profit of other well-accepted methods (BC and ISO on testing, see also GARD guide). However, one of the most important points is water monitoring, upstream and downstream. Not only pH but also conductivity/salinity, suspended matter (or turbidity) and the most critical metals/metalloids...

Helena Russell
4 years ago
Helena Russell 4 years ago

I have run membrane systems on AMD at pH 1-5 for 30 years. You want to run the membrane at low pH when iron, aluminum and other sparingly soluble metals (pH 7>) are still in solution. The membrane concentrate is then supersaturated and easily precipitates with much less lime than if one simply limed the feed (50 to 90% less lime depending upon the amount of co-precipitation that takes place.

(unknown)
4 years ago
(unknown) 4 years ago

Is the purpose of your question to develop some sort of study such as column tests or is it to design and build a real passive system to treat mine drainage?

Oberfuhrer
4 years ago
Oberfuhrer 4 years ago

I can send you a rough presentation for a preliminary idea run a quick test and then went on to do some with math for limestone addition.

Maya Rothman
4 years ago
Maya Rothman 4 years ago

Yes send me some details of the analyses, volumes, goals resource recovery (copper) then discharge or reuse of membrane permeate.

(unknown)
4 years ago
(unknown) 4 years ago

Limestone is not the magic bullet that a lot of people think it is for passive treatment of acid drainage due to the potential of sulfate armoring. Are you looking at a passive or active system? There was a good paper on active systems using lime and limestone last week at the MEND conference.

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

Do you need METALLURGICAL TESTING of your ORE?

View the Services we Provide

911Metallurgist Mineral Processing & Process Development Laboratory

We have a metallurgical test for every possible mineral type and treatment.

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.

I Need Consulting Engineering Help
I Need Ore Laboratory Testing