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Gold Refining & Metal Extraction Forum

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Website title: Gold Refining & Metal Extraction Forum

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Message History

Selective Oxidation Process...Thoughts?

While waiting on parts and chemicals to arrive for the new furnace build, I have started to consider the process for further refining the Ni/Fe/Pd/Pt/Rh beads I've condensed from direct melting the catalyst substrate into a more pure PGM composition. Once I get the furnace all put together I am going to re-melt all of the slag from previous smelts using powdered nickel as the co...


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Iodine leach

Look and marvel how fast it is While it is one of the more expensive methods it may be a solution for people who do not have access to cyanide or do not want to work with hot sulfuric, wait a long time for AP or create a lot of waste dissolving plated material. [youtube]https://www.youtube.com/watch?v=p39UdRKFZRs[/youtube]


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Chemical suppliers

So I’m looking through new chemical suppliers because FedEx has changed the regulations about shipping 68% nitric acid. They will only ship nitric acid if it’s 65% or below without having to deal with hazmat and hazmat shipping costs. That has sparked me on a search to find a different supplier other than DudaEnergy. They have been my supplier for years almost a year and a half....


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**German Authorities Investigate Heraeus Over Alleged Precious Metals Fraud**

**German Authorities Investigate Heraeus Over Alleged Precious Metals Fraud** The Frankfurt Public Prosecutor’s Office has launched an investigation into the German technology and precious metals company Heraeus. According to reports by the Financial Times and confirmed by the *Handelsblatt*, authorities suspect that Heraeus Precious Metals may have retained precious metal resi...


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Automatic gold stripping machine.

Where this hobby has lead me... I have been stripping e waste and jewelry manually for a while. Trial and error has brought me to sticking copper pins in the material in a plastic perforated cup. I learned that when I used copper baskets, pressing down on the material with a copper pin connected to the positive helped to 'find' the untouched pieces and strip them. But I had to...


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