Darth-Vang
Harmless
Posts: 22
Registered: 28-6-2019
Member Is Offline
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Harris Process of refining lead
Was reading up on Harris Process of refining lead, the process can remove tin, tellerium, arsenic, antimony from lead using sodium hydroxde and sodium
nitrate, all in molten state poured into molten lead alloys. Has anyone tried this? I'm wanting to purify my lead alloy. I know my lead definitely has
antimony or tin in it. I'm looking to purify it for chemistry wise to make lead nitrate if possible.
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Rainwater
National Hazard
Posts: 919
Registered: 22-12-2021
Member Is Offline
Mood: indisposition to activity
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I recycle my lead waste by dissolving as much as possible in consentrated HCl.
Then filter.
Afterwards i remove the excess HCl by boiling it off
Filter again to remove AgCl
Then add NaHCO3 to percipitate PbCO3
Then filter and wash.
Add some sawdust and cook at 700c for about an hour.
Once you have the PbCO3, you can react directly with nitric acid. You don't need to go all the way to the metal
Please study and observe all the revelation safety and disposal procedures for lead compounds
This stuff is very toxic
"You can't do that" - challenge accepted
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