Reduction and Sulfurization Behavior of Tin Phases in Tin-bearing Iron Concentrates with Sulfates in Sulfur-bearing Stone Coal

DOI Web Site 被引用文献2件 参考文献17件
  • Zhang Ren-jie
    State Key Laboratory of Complex Non-ferrous Metal Resources Clean Utilization, Engineering Research Center of Metallurgical Energy Conservation and Emission Reduction of Ministry of Education, Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology
  • Li Lei
    State Key Laboratory of Complex Non-ferrous Metal Resources Clean Utilization, Engineering Research Center of Metallurgical Energy Conservation and Emission Reduction of Ministry of Education, Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology
  • Li Kong-zhai
    State Key Laboratory of Complex Non-ferrous Metal Resources Clean Utilization, Engineering Research Center of Metallurgical Energy Conservation and Emission Reduction of Ministry of Education, Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology
  • Yu Yong
    State Key Laboratory of Complex Non-ferrous Metal Resources Clean Utilization, Engineering Research Center of Metallurgical Energy Conservation and Emission Reduction of Ministry of Education, Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology
  • Wang Hua
    State Key Laboratory of Complex Non-ferrous Metal Resources Clean Utilization, Engineering Research Center of Metallurgical Energy Conservation and Emission Reduction of Ministry of Education, Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology

抄録

<p>The tin could be effectively removed from tin-bearing iron concentrates through roasted with sulfur-bearing stone coal reported in previous researches, and the Sn volatilization ratio was obviously influenced by the amount of sulfur-bearing stone coal used. The reactivity of sulfate (FeSO4) in sulfur-bearing stone coal on the reduction and sulfurization behavior of cassiterite (SnO2) in tin-bearing iron concentrates was studied in this paper. The thermodynamic analysis and experimental results showed that Fe–Sn spinel was formed with the increase of FeSO4 amount during the roasting process, and it resulted in the tin volatilization ratio being relatively low (a maximum of 61.87%). Furthmore, the EPMA analysis indicated that the Fe–Sn spinel was mostly concentrated in the upper layer of the roasted residues, and these tin could be further removed and recovered by a physical separation process.</p>

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