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- Jul 8, 2023
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I saw this on the internet. The patent is attached. Any thoughts on this method for gold purification and application for individual/hobby use to extract gold?
Dithiobiuret for gold refining
- Thread starter James Ball
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The steps in the patent for precious metals extraction and purification are generally well known in gold metallurgy and lack individual novelty.
The patent appears to be based on the application of several of these steps in series without any new or novel steps being introduced.
Apart from my doubts that the patent would survive a legal challenge the likelihood of such a challenge is minimal due to the conditions of extraction employed in the patent.
The cost of a full scale CIP/CIL plant is huge, the cost of an equivalent acid resistant/proof plant would be enormous.
Chemical consumption would be high and base metal solubilising into the leach liquor would require constant expensive treatment to avoid metal saturating effects.
The process steps have been discussed in this forum and in the scientific literature, they have their place in refining and may be exactly what someone wants for small scale processing.
They are certainly not the answer to a metallurgists prayer for a commercial process.
Deano
The patent appears to be based on the application of several of these steps in series without any new or novel steps being introduced.
Apart from my doubts that the patent would survive a legal challenge the likelihood of such a challenge is minimal due to the conditions of extraction employed in the patent.
The cost of a full scale CIP/CIL plant is huge, the cost of an equivalent acid resistant/proof plant would be enormous.
Chemical consumption would be high and base metal solubilising into the leach liquor would require constant expensive treatment to avoid metal saturating effects.
The process steps have been discussed in this forum and in the scientific literature, they have their place in refining and may be exactly what someone wants for small scale processing.
They are certainly not the answer to a metallurgists prayer for a commercial process.
Deano
