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Pollution-Free Smelting Process

     

The lead-bearing gold concentrates are treated with the independently developed crystallization washing technology, which enables hydrometallurgical separation of impurities including lead, iron and sulfur during gold smelting and extraction. This process features innovative and unique design, strong adaptability, and wide applicability for refining lead-bearing concentrates (including middlings) obtained from Knelson gravity concentration. It also provides high reference value for the processing of other lead-bearing concentrates.

An increasing number of domestic gold mining enterprises in China have adopted the Knelson gravity concentration process. At present, most Knelson gravity concentrates are processed via pyrometallurgical smelting, which is associated with harsh working conditions and high risk of lead poisoning. The application of this new process can thoroughly address the lead pollution problem, thus filling the domestic gap in this technical field.

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