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silver-containing catalysts

     

For the silver-containing catalysts used in the petrochemical and pharmaceutical industries, and the silver paste recovered from the solar energy industry, since they contain basically no other metal impurities besides silver, we have designed a new recovery process.

After such silver-containing waste catalysts and silver paste are leached with nitric acid, the pH value and silver ion concentration of the leachate are adjusted, and then it is directly transferred to a silver electrowinning cell for electrowinning treatment. The barren solution obtained after electrowinning is used as make-up water for diluting the leachate in the next batch, and the electrowon silver powder can meet the requirements of National Standard Grade 1 Silver.

The silver electrowinning process for recycling silver-containing waste catalysts boasts advantages such as simple operation and low production cost.

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