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首页> 外文期刊>Fuel >Zinc concentrate internal circulation technology for elemental mercury recovery from zinc smelting flue gas
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Zinc concentrate internal circulation technology for elemental mercury recovery from zinc smelting flue gas

机译：锌浓缩内部循环技术，用于从锌冶炼烟气中的元素汞恢复

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摘要

As most of the purposed synthesized mercury sorbents are expensive and insufficient for capturing mercury from the flue gas with ultrahigh concentration of Hg-0 and SO2 in smelting processes, the application of sorbent injection for mercury removal in zinc smelting was extremely restricted. In this work, Zinc concentrate (ZC) ore, one of the raw materials for smelting, was developed to capture gaseous Hg-0 from zinc smelting flue gas. The average Hg-0 adsorption capacity of ZC was greater than 2 mg.g(-1), even better than some synthetic binary sulfide sorbents. Meanwhile, ZC presented a good resistance to H2O and SO2 at 60-100 degrees C. Higher ratio of Cu element in ZC ores can result in better Hg-0 adsorption performance due to the increase of active site S-n(2-) derived from the oxidation of S2- by Cu2+. After capture Hg-0, spent ZC can be reused as raw material for zinc production, eliminating the generation of waste sorbent. This technology can as a co-benefit of condensation device to deeply purify mercury pollutants, and the excessive gaseous Hg-0 will be removed from the system by condensing into liquid mercury. Moreover, such ZC cycles offers a specific strategy for gaseous Hg-0 recovery in other nonferrous smelting industries.
机译：由于大多数所用合成的汞吸附剂昂贵并且对于熔炼过程中HG-0和SO2的超高浓度捕获来自烟道气的汞，吸附剂注射在锌冶炼中的汞去除的应用极大限制。在这项工作中，开发了一种从熔炼烟气捕获气态HG-0的熔融物质浓缩物（ZC）矿石之一。 ZC的平均Hg-0吸附容量大于2mg.g（-1），甚至比某些合成二元硫化物吸附剂更好。同时，ZC在60-100℃下呈现对H 2 O和SO2的良好抗性。由于源自源自的活性位点Sn（2-）的增加，ZC矿石中的Cu元素的ug元素的比例较高。 Cu2 +的S2-氧化。捕获HG-0后，废ZC可作为锌生产的原料重复使用，消除了废吸附剂的产生。该技术可以作为冷凝装置的共同利益，以深入净化汞污染物，并且通过冷凝成液体汞，将过量的气态HG-0从系统中除去。此外，这种ZC周期提供了在其他有色冶炼行业中的气态HG-0恢复的特定策略。

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  • 来源
    《Fuel》 |2020年第15期|118566.1-118566.7|共7页
  • 作者

    Liao Yong; Liu Wei; Xu Haomiao; Hong Qinyuan; Wang Yalin; Qu Zan; Yan Naiqiang;

  • 作者单位

    Shanhai Jiao Tong Univ Sch Environm Sci & Engn Shanghai 200240 Peoples R China;

    Shanhai Jiao Tong Univ Sch Environm Sci & Engn Shanghai 200240 Peoples R China;

    Shanhai Jiao Tong Univ Sch Environm Sci & Engn Shanghai 200240 Peoples R China;

    Shanhai Jiao Tong Univ Sch Environm Sci & Engn Shanghai 200240 Peoples R China;

    Shanhai Jiao Tong Univ Sch Environm Sci & Engn Shanghai 200240 Peoples R China;

    Shanhai Jiao Tong Univ Sch Environm Sci & Engn Shanghai 200240 Peoples R China|Shanghai Inst Pollut Control & Ecol Secur Shanghai 200092 Peoples R China;

    Shanhai Jiao Tong Univ Sch Environm Sci & Engn Shanghai 200240 Peoples R China|Shanghai Inst Pollut Control & Ecol Secur Shanghai 200092 Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Smelting flue gas; Elemental mercury; Mercury recovery; Zinc concentrate circulation;

    机译：冶炼烟气;元素汞;汞恢复;锌浓缩循环;

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