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
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Copper Extraction (6 replies and 6 comments)

Rob.Earth.20
7 months ago
Rob.Earth.20 7 months ago

Can I make a Copper Sulfate solution with this unknown copper ore and sulfuric acid without using a burner or roasting?

How? 

Can I just using a crushing and just directly dissolving the copper using the sulfuric acid?

Thanks

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max skinner
7 months ago
max skinner 7 months ago

You certainly can if the copper minerals are oxide, but very difficult if not impossible on sulfide ore. The oxides of copper leach very well.

Rob.Earth.20
7 months ago

thanks a lot. do the carbonate too?

Rheomet
7 months ago
Rheomet 7 months ago
2 likes by Rob.Earth.20 and David

Agreed with Max. In addition, if you have copper as sulphide, you can use ferric sulphate to oxidize it so it will leach eventually. If low grade, best to run a column heap leach simulation, preceded by bottle roll amenability tests (2 of them: one with acid, one with acid + ferric). Some base line mineralogy always beneficial. Hope this helps. Alex.

Rob.Earth.20
7 months ago

thanks a lot Rheo. This Forums are full of great people like you..

max skinner
7 months ago
max skinner 7 months ago
2 likes by Rob.Earth.20 and David

Yes Rob, the carbonates of copper, the minerals azurite and malachite are considered oxides, the common silicate chrysocolla also is very soluble under proper conditions.     Max  

Rob.Earth.20
7 months ago

Thanks again max. You rock!

David
7 months ago
David 7 months ago

Use the Social Share Bar on the Left. Tell everyone you can about https://www.911metallurgist.com/metallurgy/ It's FREE & GOOD.

Rob.Earth.20
7 months ago

Thanks David, I'm so helped with this paper.. Many thanks from East Indonesia.

inOr
7 months ago
inOr 7 months ago

Rob, it's really a good idea to know what ores you are working with.  As others here have noted, it makes a difference if your ore is a sulfide vs. a carbonate, oxide or silicate.  Depending on the size of your deposit, it is probably well worth the expense to have your ore assayed for copper and other metals.  Bear in mind that copper sulfides in particular occur mixed with sulfides of other metals.  Treating with sulfuric acid will likely dissolve these as well, resulting in a mixture of sulfates, not just copper sulfate.  These could be more valuable or less than copper salts.

 

Rob.Earth.20
7 months ago

Thanks InOr, Someone tell me that the ore body have Chrome too..
So are the chrome metal in the ore could affect the copper separating process?

inOr
7 months ago

Rob. I don't know the answer to this question. The only chromium ore I know of is chromite, Fe Cr2 04. The chromium in chromite is trivalent (in the +3 oxidation state.) and not terribly toxic. Howver, if treated in such a way (How? I don't know that either.) as to oxidize to hexavalent Cr, you will have a toxin/carcinogen on your hands. To repeat, I don't know if this is a realistic possibility as the subject is beyond my expertise. Still, it's prudent to keep it in mind when planning your process.

Craig Lockhart
7 months ago
Craig Lockhart 7 months ago
2 likes by Rob.Earth.20 and David

Hi Rob,

Keep in mind that your copper solutions may be worthless if they are not upgraded.  You may want to consider an iron precipitation step to convert weak solutions to copper metal.  If your goal is to produce copper sulfate crystals, you can dissolve the copper again with sulfuric to produce a strong solution for crystallization.

some information on copper cementation

Good luck


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