REDUCTIVE-SULFURIZING SMELTING TREATMENT OF SMELTER SLAG FOR COPPER AND COBALT RECOVERY

被引:13
作者
Li, Y. [1 ]
Yang, S. -H. [1 ]
Tang, C-B. [1 ]
Chen, Y. -M. [1 ]
He, J. [1 ]
Tang, M. -T. [1 ]
机构
[1] Cent S Univ, Sch Met & Environm, Changsha, Hunan, Peoples R China
基金
中国国家自然科学基金;
关键词
Smelter slag; Reductive-sulfurizing smelting; Slag cleaning; Recovery of cobalt and copper; Copper-cobalt matte; Cleaned slag; FURNACE; CHAMBISHI; OXYGEN;
D O I
10.2298/JMMB160315049L
中图分类号
TF [冶金工业];
学科分类号
0806 ;
摘要
Recovery of copper and cobalt from smelter slag using reductive-sulfurizing smelting method was performed in this study. The effects of reductive agent (coke), sulfurizing agent (pyrite), slag modifier (CaO) and smelting temperature and duration on the extractive efficiencies of Cu, Co and Fe were discussed. The phase compositions and microstructure of the materials, copper-cobalt matte and cleaned slag were determined. The results showed that copper and cobalt contents in cleaned slag could decrease averagely to 0.18% and 0.071% respectively after cleaning. 91.99% Cu and 92.94% Co and less than 38.73% Fe were recovered from the smelter slag under the optimum conditions: 6 wt.% coke, 20 wt.% pyrite and 6 wt.% CaO addition to the smelter slag, smelting temperature of 1350 degrees C and smelting duration of 3h. The addition of CaO can increase the selectivity of Co recovery. The cleaning products were characterized by XRD and SEM-EDS analysis. The results showed that the main phases of copper-cobalt matte were iron sulfide (FeS), geerite (Cu8S5), iron cobalt sulfide (Fe0.92Co0.08S) and Fe-Cu-Co alloy. The cleaned slag mainly comprised fayalite (Fe3O4), hedenergite (CaFe(Si2O6)) and magnetite (Fe3O4).
引用
收藏
页码:73 / 79
页数:7
相关论文
共 20 条
  • [11] MIKHAIL SA, 1992, CAN METALL QUART, V31, P269
  • [12] Review of copper pyrometallurgical practice: today and tomorrow
    Moskalyk, RR
    Alfantazi, AM
    [J]. MINERALS ENGINEERING, 2003, 16 (10) : 893 - 919
  • [13] Cleaning copper and Ni/Co slags: The technical, economic, and environmental aspects
    Piret, NL
    [J]. JOM-JOURNAL OF THE MINERALS METALS & MATERIALS SOCIETY, 2000, 52 (08): : 18 - 18
  • [14] Recovery of copper from reverberatory furnace slag by flotation
    Sarrafi, A
    Rahmati, B
    Hassani, HR
    Shirazi, HHA
    [J]. MINERALS ENGINEERING, 2004, 17 (03) : 457 - 459
  • [15] Schlesinger M.E., 2011, EXTRAC METALL
  • [16] An overview of recovery of metals from slags
    Shen, HT
    Forssberg, E
    [J]. WASTE MANAGEMENT, 2003, 23 (10) : 933 - 949
  • [17] Wei M.A, 2004, MIN METALL, V13, P8
  • [18] Ye L.G., 2014, NONFERR METAL EXTRAC, P5
  • [19] Yucel O., 1992, Miner. Process. Extr. Metall. Rev, V10, P99, DOI [10.1080/08827509208914078, DOI 10.1080/08827509208914078]
  • [20] Recovery of cobalt from converter slag of Chambishi Copper Smelter using reduction smelting process
    Zhai Xiu-jing
    Li Nai-jun
    Zhang Xu
    Fu Yan
    Jiang Lan
    [J]. TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA, 2011, 21 (09) : 2117 - 2121