Effect of FeS Content on Pb–Sb Separation of PbS–Sb₂S₃–FeS Ternary System Under Water Atmosphere

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• 作者：Yanshuang Meng ; Yixin Hua ; Fuliang Zhu
• 关键词：Volatilization of Sb2S3 ; FeS ; PbS–Sb2S3–FeS ternary ; Water vapor atmosphere
• 刊名：Transactions of the Indian Institute of Metals
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：70
• 期：1
• 页码：1-6
• 全文大小：
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Metallic Materials; Materials Science, general; Tribology, Corrosion and Coatings;
• 出版者：Springer India
• ISSN：0975-1645
• 卷排序：70

文摘

The effect of FeS content on the Pb–Sb separation of PbS–Sb₂S₃–FeS ternary system under water vapor atmosphere has been presented in this paper. The reaction mechanism between PbS–Sb₂S₃–FeS system and steam has been discussed. It was found that an effective separation of Pb–Sb could be obtained when the FeS content of the sample was in the range of 5–7 %, while the Pb–Sb separation was inhibited when the FeS content was greater than 10 %. The XRD results indicated that the calcine was composed of PbS, Fe₃O₄, FePb₄Sb₆S₁₄, Pb₅Sb₄S₁₁ and FeSb₂O₄. The volatilization of Sb₂S₃ could be improved with the rising of the sample’s melting point caused by the addition of FeS up to 7 %. With the addition of FeS up to 7 %, the volatilization of Sb₂S₃ could be improved by rising the melting point of the samples. However, FeS might be associated with Sb₂S₃ and PbS to form FePb₄Sb₆S₁₄, Pb₅Sb₄S₁₁ or oxidized into FeSb₂O₄ by water vapor if the content of FeS was too high (≥10 %). The complex sulfides and oxide made the volatilization of Sb₂S₃ or Sb₂O₃ difficult and resulted in an inferior Pb–Sb separation.