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首页> 外文期刊>Environmental Pollution >Strategies for arsenic pollution control from copper pyrometallurgy based on the study of arsenic sources, emission pathways and speciation characterization in copper flash smelting systems
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Strategies for arsenic pollution control from copper pyrometallurgy based on the study of arsenic sources, emission pathways and speciation characterization in copper flash smelting systems

机译：基于铜闪光冶炼系统砷来源研究的铜Pyrome冶金砷污染控制的策略

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摘要

Arsenic in copper flash smelting (FS) systems not only affects the quality of products but also poses significant technological and environmental problems. Based on the assessment of arsenic mass partitioning in the FS system, arsenic elimination in off-gassing and tailings is 22%, and most of the arsenic output (69%) is recycled in the FS system. Circulating arsenic, especially arsenic in recycled dust and slag concentrate, is the key reason for high-arsenic-content feed. Dust-type recycled materials (RMs) contribute much more arsenic to the feed than slag-type RMs. Flash smelting furnace electrostatic precipitator (FSF ESP) dust contributes makese the largest contribution to arsenic among the dust-type RMs of mixed dust, especially trivalent arsenic, followed by FSF and flash converting furnace waste heat boiler (FCF WHB) dust, which contributes pentavalent arsenic. FCF WHB dust exhibits a relatively low arsenic content, consisting mainly of As(V)-O. Slag-type recycled materials contribute As(V)-O to the total feed, and As(III) originates from copper concentrates. Considering the arsenic contribution and environmental risk, reducing the recovery of FSF ESP dust can greatly decrease the arsenic grade of FSF feed and volatile As2O3. As one of the main arsenic sources in feed, FSF slag concentrate should be carefully disposed of if separated from feed materials because of its high arsenic-related environmental risk. In contrast, WHB dust and FCF slag are more suitable as RM due to their high copper content and low arsenic risk. (C) 2020 Elsevier Ltd. All rights reserved.
机译：铜闪光冶炼（FS）系统中的砷不仅影响了产品的质量，而且造成了显着的技术和环境问题。基于FS系统中的砷质量分配的评估，灭臭和尾矿中的砷消除为22％，大部分砷产量（69％）在FS系统中再循环。循环砷，特别是砷在再生粉尘和矿渣浓缩物中，是高砷含量饲料的关键原因。除尘器型再循环材料（RMS）与炉渣型RMS的饲料有更多的砷。 Flash冶炼炉静电除尘器（FSF ESP）灰尘为混合粉尘的混合粉尘，特别是三价砷的粉尘型RMS之间的最大贡献提供了最大的贡献，其次是FSF和闪蒸转换炉废热锅炉（FCF WHB）灰尘，这有助于五价砷。 FCF WHB粉尘表现出相对较低的砷含量，主要由（v）-o组成。炉渣型再循环材料有助于（v）-o至总饲料，AS（iii）源自铜浓缩物。考虑到砷的贡献和环境风险，减少FSF ESP灰尘的复苏可以大大降低FSF饲料和挥发性AS2O3的砷等级。作为饲料中的主要砷来源之一，由于其与饲料材料的高砷相关的环境风险分离，应小心地处理FSF炉渣浓缩物。相比之下，由于其高铜含量和低砷风险，WHB灰尘和FCF炉渣更适合于RM。 （c）2020 elestvier有限公司保留所有权利。

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  • 来源
    《Environmental Pollution》 |2021年第2期|116203.1-116203.12|共12页
  • 作者

    Zhou Huihui; Liu Guijian; Zhang Liqun; Zhou Chuncai; Mian Md Manik; Cheema Ayesha Imtiyaz;

  • 作者单位

    Univ Sci & Technol China Sch Earth & Space Sci CAS Key Lab Crust Mantle Mat & Environm Hefei 230026 Peoples R China|Chinese Acad Sci Inst Earth Environm State Key Lab Loess & Quaternary Geol Xian 710075 Shanxi Peoples R China;

    Univ Sci & Technol China Sch Earth & Space Sci CAS Key Lab Crust Mantle Mat & Environm Hefei 230026 Peoples R China|Chinese Acad Sci Inst Earth Environm State Key Lab Loess & Quaternary Geol Xian 710075 Shanxi Peoples R China;

    Anhui Univ Sch Resource & Environm Engn Hefei 230601 Peoples R China;

    Hefei Univ Technol Sch Resources & Environm Engn Hefei 230009 Peoples R China;

    Univ Sci & Technol China Sch Earth & Space Sci CAS Key Lab Crust Mantle Mat & Environm Hefei 230026 Peoples R China|Chinese Acad Sci Inst Earth Environm State Key Lab Loess & Quaternary Geol Xian 710075 Shanxi Peoples R China;

    Univ Sci & Technol China Sch Earth & Space Sci CAS Key Lab Crust Mantle Mat & Environm Hefei 230026 Peoples R China|Chinese Acad Sci Inst Earth Environm State Key Lab Loess & Quaternary Geol Xian 710075 Shanxi Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Arsenic; Flash copper smelting; Mass partitioning; Occurrence mode; Chemical speciation;

    机译：砷;闪蒸铜冶炼;质量分区;发生模式;化学品格;

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