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recovery and refining of spent palladium-carbon catalysts

     

In the recovery and refining of spent palladium-carbon catalysts, the main purification methods are incineration and leaching.

Among them, the incineration method involves enriching the palladium-containing catalyst through high-temperature treatment, followed by recovery using traditional methods. The other is the leaching purification process, which utilizes ion exchange, electrolysis or displacement techniques to treat spent palladium-carbon. This method is generally suitable for spent palladium-carbon containing various other base metal impurities.

Here, we will share a refining process that combines incineration and leaching methods. First, the spent palladium-carbon catalyst to be refined undergoes evaporation and drying treatment, as used spent palladium-carbon contains a large amount of moisture. After drying, it is calcined at a high temperature of 600°C to remove the activated carbon components and organic matter from the spent palladium-carbon. Once calcination is complete, it is cooled to room temperature to obtain palladium oxide powder.

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