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Synthesis of Hydroxylated Xanthate Salt and Its Use as Novel Selective Depressant in Copper-Molybdenum Separation

  • Mineral Processing of Nonferrous Metals
  • Published:
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Abstract

A hydroxylated xanthate salt (HXS) was synthesized from ethanol, carbon disulfide, and NaOH. The flotation responses of chalcopyrite and molybdenite when HXS was used as a novel depressant were investigated using bench-scale flotation tests. The bench-scale flotation results indicate that HXS strongly influenced the flotation of chalcopyrite and had little effect on the flotation of molybdenite. These results can be attributed to a significant improvement in the molybdenite/chalcopyrite selectivity surface index after the addition of HXS. The synthesized HXS contained both solid-philic and hydrophilic groups. The molybdenum recovery achieved using HXS was 9.91% higher than that obtained using sodium hydrosulfide, and better separation was achieved. Compared with sodium hydrosulfite, the chemical oxygen demand, sulfates and five-day BOD decreased significantly using the alternative depressant. This HXS is therefore a potential depressant for use in copper-molybdenum separation.

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Author information

Authors and Affiliations

  1. School of Metallurgy, Northeastern University, Shenyang, 110004, China

    Zilong Liu, Hongying Yang, Guobao Chen & Linlin Tong

  2. State Key Laboratory of Complex Nonferrous Metal Resources Clear Utilization, Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming, 650093, China

    Cong Chen, Jiushuai Deng, Xi Zhang, Hao Lai, Hongying Luo & Jiaozhong Cai

  3. School of Physics and Electronic information Engineering, Qinghai University for Nationalities, Xining, 810007, China

    Cong Chen

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  1. Zilong Liu
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  2. Cong Chen
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  3. Hongying Yang
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Correspondence to Hongying Yang.

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Liu, Z., Chen, C., Yang, H. et al. Synthesis of Hydroxylated Xanthate Salt and Its Use as Novel Selective Depressant in Copper-Molybdenum Separation. Russ. J. Non-ferrous Metals 59, 223–229 (2018). https://doi.org/10.3103/S1067821218030082

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  • DOI: https://doi.org/10.3103/S1067821218030082

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