Gold and Silver Refining Video 2 -- Silver Metal From CPUs

Video follows up on the process of stripping gold plating from high-grade computer CPUs, pins and edge connectors in video #1. Older CPUs from the 1980s and 1990s have the most gold and silver on the covers and pins -- silver was sometimes plated on the pins first to give the gold layer a good surface to adhere to.After leaching for over a week in a room temperature nitric solution, the silver and base metals from the CPUs are now in solution. Silver is now in solution as silver nitrate. When salt (sodium chloride) is added, this silver nitrate turns to silver chloride, the white particles. The video continues and shows how to turn this silver chloride into silver metal by adding HCL and a strip of zinc.The solution is then filtered and the silver metal is saved and smelted. More details are in ebooks available at www.bestgoldbuyers.com/products.htmlAlso the Yahoo Group at GoldandPlatinumRecycling has tips on refining and recycling precious metals. From goldmetalx.com --GoldMetalsExpress. Video is for informational purposes only. Any refining should be done in a well-equipped lab by trained personnel.

Channel: Howto & Style
Uploaded: December 31, 1969 at 6:59 pm
Author: tcsnet

Length: 04:32
Rating: N/A
Views: 14361

Tags: AR  catalytic  copperas  gold  metals  palladium  platinum  precious  recovery  recycling  refining  rhodium  silver  

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