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Volume 25 Issue 5
May  2018
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文章导航 >  矿物冶金与材料学报（英文）  > 2018  >  25(5): 489-497
Jin-sheng Yu, Run-qing Liu, Li Wang, Wei Sun, Hong Peng,  and Yue-hua Hu, Selective depression mechanism of ferric chromium lignin sulfonate for chalcopyrite–galena flotation separation, Int. J. Miner. Metall. Mater., 25(2018), No. 5, pp. 489-497. https://doi.org/10.1007/s12613-018-1595-6
Cite this article as:
Jin-sheng Yu, Run-qing Liu, Li Wang, Wei Sun, Hong Peng,  and Yue-hua Hu, Selective depression mechanism of ferric chromium lignin sulfonate for chalcopyrite–galena flotation separation, Int. J. Miner. Metall. Mater., 25(2018), No. 5, pp. 489-497. https://doi.org/10.1007/s12613-018-1595-6
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研究论文

Selective depression mechanism of ferric chromium lignin sulfonate for chalcopyrite–galena flotation separation

  • School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China

  • School of Chemical Engineering, The University of Queensland, Brisbane 4072, Australia

  • 通讯作者:

    Run-qing Liu    E-mail: liurunqing@126.com

    Wei Sun    E-mail: sunmenghu@csu.edu.cn

  • Selective recovery of chalcopyrite–galena ore by flotation remains a challenging issue. The development of highly efficient, low-cost, and environmentally friendly depressants for this flotation is necessary because most of available reagents (e.g., K2Cr2O4) are expensive and adversely affect the environment. In this study, ferric chromium lignin sulfonate (FCLS), which is a waste-product from the paper and pulp industry, was introduced as a selective depressant for galena with butyl xanthate (BX) as a collector. Results show that the residue recovery of Pb in Cu concentrate was substantially reduced to 4.73% using FCLS compared with 10.71% using the common depressant K2Cr2O4. The underlying mechanisms were revealed using zeta-potential measurements and X-ray photoelectron spectroscopy (XPS). Zeta-potential measurements revealed that FCLS was more efficiently absorbed onto galena than onto chalcopyrite. XPS measurements further suggested that FCLS enhanced the surface oxidation of galena but prevented that of chalcopyrite. Thus, FCLS could be a potential candidate as a depressant for chalcopyrite–galena flotation because of its low cost and its lack of detrimental effects on the environment.
    • Research Article

    Selective depression mechanism of ferric chromium lignin sulfonate for chalcopyrite–galena flotation separation

    + Author Affiliations
      Abstract
    • Selective recovery of chalcopyrite–galena ore by flotation remains a challenging issue. The development of highly efficient, low-cost, and environmentally friendly depressants for this flotation is necessary because most of available reagents (e.g., K2Cr2O4) are expensive and adversely affect the environment. In this study, ferric chromium lignin sulfonate (FCLS), which is a waste-product from the paper and pulp industry, was introduced as a selective depressant for galena with butyl xanthate (BX) as a collector. Results show that the residue recovery of Pb in Cu concentrate was substantially reduced to 4.73% using FCLS compared with 10.71% using the common depressant K2Cr2O4. The underlying mechanisms were revealed using zeta-potential measurements and X-ray photoelectron spectroscopy (XPS). Zeta-potential measurements revealed that FCLS was more efficiently absorbed onto galena than onto chalcopyrite. XPS measurements further suggested that FCLS enhanced the surface oxidation of galena but prevented that of chalcopyrite. Thus, FCLS could be a potential candidate as a depressant for chalcopyrite–galena flotation because of its low cost and its lack of detrimental effects on the environment.
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