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化學(xué)配方數(shù)據(jù)庫(kù)
配方類型: METALS AND THEIR TREATMENT
配方說明: Reclaiming Silver from Plating Solutions
配方組成:
配制方法: The use of zinc dust is an effective method for silver recovery.
Theoretically, each ounce of zinc will displace almost 4 ounces of silver. However, at least a 50% excess should be added to avoid redissolution of the silver by the free cyanide present in the bath. A simple test for complete precipitation is to immerse a clean penny or piece of copper wire in the solution. If no whitish film of silver deposits in 5 minutes, the reaction may be considered complete.

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