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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Tin & Lead Recovery & Electrowinning (1 reply)

1 year ago
Seeker 1 year ago

What is the best chemical way to recover tin and lead separately from the solution containing chlorides of lead and tin?

How to recover lead and tin separately from the solution containing chlorides of lead and tin through electrodeposition?


Todd H
6 months ago
Todd H 6 months ago

You may be able to change the chloride concentration and cause the lead to precipitate first.  Or -

Lead contamination is especially bad for gold alloys, small amounts of lead gives alloys that easily breaks when worked. But a simple way exist to eliminate the lead before the gold is precipitated.

When lead chloride is mixed with sulfate ions a solid precipitate of insoluble lead sulfate is formed. This is easily filtered off from solutions containing values.

Any sulfate ion works but commonly a couple of drops of sulfuric acid is added to the aqua regia before the solution is filtered to remove silver chloride before precipitating the gold.

A side effect from denoxing with sulfamic acid is that sulfuric acid is formed and lead sulfate is precipitated automatically.



Todd Harvey - Global Resource Engineering http://www.global-resource-eng.com

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