Fu-yuan Zhang, Ya-jie Zheng,  and Guo-min Peng, Deselenization and detellurization of precious-metal ore concentrates by swelling oxidizing roasting and successive alkaline leaching, Int. J. Miner. Metall. Mater., 24(2017), No. 2, pp. 147-155. https://doi.org/10.1007/s12613-017-1389-2
Cite this article as:
Fu-yuan Zhang, Ya-jie Zheng,  and Guo-min Peng, Deselenization and detellurization of precious-metal ore concentrates by swelling oxidizing roasting and successive alkaline leaching, Int. J. Miner. Metall. Mater., 24(2017), No. 2, pp. 147-155. https://doi.org/10.1007/s12613-017-1389-2
Research Article

Deselenization and detellurization of precious-metal ore concentrates by swelling oxidizing roasting and successive alkaline leaching

+ Author Affiliations
  • Corresponding author:

    Ya-jie Zheng

  • Received: 18 July 2016Revised: 11 September 2016Accepted: 26 October 2016
  • A new technique of swelling oxidizing roasting and alkaline leaching was proposed for deselenization and detellurization of precious-metal ore concentrates. Alkali-metal and alkaline-earth-metal chlorides and carbonates were preliminarily selected as swelling agents. The roasting removal rate and alkaline leaching rate of selenium and tellurium were investigated, and NaCl was selected as an appropriate swelling agent. Furthermore, the effects of various factors on the selenium gasification rate and leaching rate of selenium and tellurium were investigated. The results show that the selenium gasification rate reaches 88.41% after swelling oxidizing roasting for 2 h at 510℃ using an NaCl dosage coefficient of 100 and a sulfuric acid dosage coefficient of 1.3; the amorphous elemental tellurium is completely transformed into TeO2. The roasted product is subjected to alkaline leaching using a 100 g/L NaOH solution, which results in a selenium leaching rate of 10.51%, a total selenium removal rate of 98.92%, and a tellurium leaching rate of 97.64%. In the alkaline leaching residue, the contents of selenium, tellurium, gold, platinum, and palladium are 0.7825%, 5.492%, 8.333%, 0.2587%, and 1.113%, respectively; the precious metals are enriched approximately sixfold.

  • loading
  • [1]
    Y.T. Ning, Z.F. Yang, and F. Wen, Platinum, Metallurgical Industry Press, Beijing, 2010.
    [2]
    Y.L. Niu, X.Q. Xiao, Z.G. Gu, and Z.J. Li, Synthesis and electrochemical property of the graphene/Pt composites, Chin. J. Inorg. Chem., 28(2012), No. 4, p. 751.
    [3]
    S. Guerin and G.S. Attard, Electrochemical behaviour of electrodeposited nanostructured palladium + platinum films in 2 M H2SO4, Electrochem. Commun., 3(2001), No. 10, p. 544.
    [4]
    F. Gauthard, F. Epron, and J. Barbier, Palladium and platinum-based catalysts in the catalytic reduction of nitrate in water:effect of copper, silver, or gold addition, J. Catal., 220(2003), No. 1, p. 182.
    [5]
    C. Colombo, A.J. Monhemius, and J.A. Plant, Platinum, palladium and rhodium release from vehicle exhaust catalysts and road dust exposed to simulated lung fluids, Ecotoxicol. Environ. Saf., 71(2008), No. 3, p. 722.
    [6]
    J.L. Haan and R.I. Masel, The influence of solution pH on rates of an electrocatalytic reaction:formic acid electrooxidation on platinum and palladium, Electrochim. Acta, 54(2009), No. 16, p. 4073.
    [7]
    V.P. Ananikov, D.A. Malyshev, I.P. Beletskaya, G.G. Aleksandrov, and I.L. Eremenko, Palladium and platinum catalyzed hydroselenation of alkynes:Se/H vs. Se/Se addition to C/C bond, J. Organomet. Chem., 679(2003), No. 2, p. 162.
    [8]
    O.N. Kononova, V.V. Patrushev, and Y.S. Kononov, Recovery of noble metals from refractory sulfide black-shale ores, Hydrometallurgy, 144-145(2014), p. 156.
    [9]
    J.C. Zhao, Y.H. Wang, J.K. Wang, X.F. Wu, L.H. Zan, B.J. Li, and X.X. Fan, Chloridizing leaching of Au, Pt and Pd from platinum and palladium concentrate, Precious Met., 33(2012), No. 1, p. 45.
    [10]
    Q.L. Liao, D. Jiang, and W.X. Gong, Study on technology of recycling Pt, Pd, Gold from Pt Pd rich mines, Chin. Resour. Compr. Util., 28(2010), No. 8, p. 16.
    [11]
    Q.F. Zhang, Z.Q. Gong, and B.Z. Chen, Investigation on extraction of Au, Pt and Pd-pretreatment of the concentrate, Min. Metall. Eng., 22(2002), No. 2, p. 70.
    [12]
    W.F. Liu, T.Z. Yang, D.C. Zhang, L. Chen, and Y.N. Liu, Pretreatment of copper anode slime with alkaline pressure oxidative leaching, Int. J. Miner. Process., 128(2014), No. 5, p. 48.
    [13]
    R.F. Zheng, C. Liu, and Y. Qing, Study on extraction of Au, Pt and Pd from anode slime of copper and nickel, Gold, 25(2004), No. 6, p. 37.
    [14]
    Y.J. Zheng, K.K. Chen, and Z.M. Sun, Recycling Se and Te and capturing Pt and Pd from solution after precipitating gold by SO2 reduction, Chin. J. Nonferrous Met., 21(2011), No. 9, p. 2258..
    [15]
    Y.X. Li, Technology study on refined platinum-palladium from platinum and palladium materials contained rich bismuth, Chin. Resour. Compr. Util., 29(2011), No. 29, p. 14.
    [16]
    L.L. Zhang and C.D. Zheng, Study on comprehensive utilization of the replaced solution in treating copper anode slime process, Copper Eng., (2013), No. 3, p. 26.
    [17]
    F.Y. Zhang, Y.J. Zheng, Z.M. Sun, Y.Y. Ma, and J.F. Dong, Recovery of rare and precious metals from precipitated gold solution by Na2SO3 reduction, Chin. J. Nonferrous Met., 25(2015), No. 8, p. 2293.
    [18]
    J.H. Hu, Study on optimum process for displacing Pt and Pd from the solution Au reduced, Hydrometall. Chin., 19(2000), No. 2, p. 22.
    [19]
    Y.Y. Ma, Y.J. Zheng, G.Y. Ding, J.W. Wang, J.F. Dong, and F.Y. Zhang, Precipitated gold solution reduced by SO2 under halogen ion composite catalyst and its thermodynamic characteristics, Chin. J. Nonferrous Met., 26(2016), No. 4, p. 901.
    [20]
    Y.J. Zheng, F.Y. Zhang, and Y.Y. Ma, The Method of Compound Reducing and Recovering Rare Metals efficiently, Chinese Patent, Appl. 104561579A, 2015.
    [21]
    Z.M. Sun and Y.J. Zheng, Reaction kinetics of Te(IV) using halogen ions as catalyst in Te(IV)-H2SO4-H2O system, Chin. J. Nonferrous Met., 20(2010), No. 12, p. 2438.
    [22]
    Y.J. Zheng and K.K. Chen, Leaching kinetics of selenium from selenium-tellurium-rich materials in sodium sulfite solutions, Trans. Nonferrous Met. Soc. China, (2014), No. 24, p. 536.
    [23]
    C.H. Deng, Experimental study on pretreatment of platinum and palladium concentrate to remove selenium and tellurium, Gold, 32(2011), No. 5, p. 39.
    [24]
    J.K. Wang, Y.H. Wang, J.C. Zhao, X.F. Wu, B.J. Li, L.H. Zan, and X.X. Fan, Recovery of gold, platinum and palladium from platinum-palladium concentrate, Hydrometall. Chin., 31(2012), No. 1, p. 13.
    [25]
    G. Xue, Experimental study on raising leaching rates of gold, silver, copper from copper-bearing gold concentrate by putting some sodium chloride in the sample during the roast, Gold, 23(2002), No. 12, p. 32.
  • 加载中

Catalog

    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

    1. 本站搜索
    2. 百度学术搜索
    3. 万方数据库搜索
    4. CNKI搜索

    Share Article

    Article Metrics

    Article Views(538) PDF Downloads(12) Cited by()
    Proportional views

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return