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Recovering Rare And Precious Metals Via Hydrometallurgical

     

The process for recovering rare and precious metals via hydrometallurgical treatment of spent petrochemical catalysts falls into the technical field of hazardous waste treatment.

This process comprises a series of hydrometallurgical recovery procedures for rare and precious metals: slurrying, coarse grinding and ultrafine grinding leaching at ambient temperature, followed by subsequent steps including heated leaching, filtration and washing, platinum precipitation by cementation, and nickel recovery.

While improving the leaching efficiency of spent petrochemical catalysts, this process can shorten leaching duration, reduce energy consumption and lift the recovery rate of rare and precious metals. Meanwhile, waste gas is effectively treated, water is recycled, and a sound production environment is guaranteed.

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