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

Hydrometallurgy: Leaching in Heap, Vat, CIL, CIP, Merrill–Crowe, SX Solvent Extraction2017-04-04T06:57:36-04:00
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Reaction Vessel using HCL (2 replies and 8 comments)

Seeker
1 month ago
Seeker 1 month ago

I need a reaction vessel to remove tin, lead and zinc impurities from copper powder using HCL purity 35%. The temp. can reach up to 100°C or even more during reaction. Kindly suggest what grade of steel or some other metal can I use for this vessel?

Thanks in advance!

SmartDog
1 month ago
SmartDog 1 month ago

In general you would use either 316 or 316L as a first choice, or a wood taken would also work.

Seeker
1 month ago

Thanks for your reply. But I read somewhere that HCL corrodes 316L. Are you sure there won't be any corrosion in 316L tank?

SmartDog
1 month ago

HCL corrodes just about everything except glass, with stainless the big issue is chloride cracking at elevated temperature, but it still is the best choice other than wood. I would strongly consider wood tanks.

SmartDog
1 month ago

Glass lined tanks are also an option, but with stirred solids that would not last long either.

SmartDog
1 month ago

You could use fiberglass tanks also, but large ones get very expensive.

Seeker
1 month ago

Thanks for your reply.
My powder is a mixture of solder, copper & zinc. I intend to treat 100 kilogram of powder with HCL (35% purity) in one batch to rid the copper dust of impurities. This powder contains 7% solder ( tin 60% + lead 40% ) & 2% Zinc. Solder and zinc will react with HCL, and the temp might go even more than 100°C. Will fiberglass tank be able to tolerate that much temperature?
Thanks & Regards

SmartDog
1 month ago

Probably not, but a glass lined stainless steel vessel would.

Alternatively go the other route, remove the copper using an ammonical leach, safer and easier.

Seeker
4 weeks ago

Thanks for your suggestion. Can you please provide me details of ammonical leach?

SmartDog
4 weeks ago
SmartDog 4 weeks ago
Seeker
4 weeks ago

Thanks!


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