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Synthesis and application of novel environmental-benign Pb depressant for Cu-Pb separation
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Synthesis and application of novel environmental-benign Pb depressant for Cu-Pb separation
The traditional depressants for Cu-Pb separation, such as K2Cr2O7 and NaCN, are notorious for their poison. ZJ201, a new environment-friendly galena depressant， was designed and synthesized to tackle the problem of poison. This reagent was put into industrial application for Cu-Pb separation in Zijin Urat Rear Banner Mining Co. Ltd. and Yuanyang Huaxi gold Co., Ltd. In Zijin Urat Rear Banner Mining Co. Ltd, a copper recovery of more than 93% with a Cu grade of over 28% in copper concentrate could be achieved, generating an annual benefit of about 20 million Yuan. In Yuanyang Huaxi gold Co., Ltd, a copper concentrate of 23.4% Cu and 100.3 g/t Au could be obtained at a copper recovery rate of 70.4% after applying ZJ201 in Cu-Pb separation operation, increasing a production worth of about 87 Yuan per ton processed ore.
Xiamen Zijin Technology of Mining & Metallurgy Ltd.
(Zijin Mining and Metallurgy Design and Research Institute)
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