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Do stainless steel cathodes for tin refining exist; what pretreatment is applicable? [Canada] 

August 8, 2007

I would like to know if there exists stainless steel tin cathodes for tin electro refining application? Whether the pretreatment and activation are done by the manufacturer?

Brigitte Peck Ki Laou
recycle scrap metal - Montreal, Quebec, Canada

You need to do some homework before you jump into this. The cathode is not activated if you want to peel the layer of tin off. You would actually passivate it or electropolish it. The plating chemistry gets very tricky when you use insoluble anodes which you must do to get nearly pure tin.

James Watts
- FL