A cleaning process for the removal and stabilisation of arsenic from arsenic-rich lead anode slime
作者: Yongming ChenNannan LiuLonggang YeShan XiongShenghai Yang
作者单位: 1School of Metallurgy and Environment, Central South University, Changsha 410083, China
2College of Metallurgy and Material Engineering, Hunan University of Technology, Zhuzhou 412007, China
3Zhongnan Engineering Corporation Limited, Changsha 410014, China
刊名: Journal of Cleaner Production, 2018, Vol.176 , pp.26-35
来源数据库: Elsevier Journal
DOI: 10.1016/j.jclepro.2017.12.121
关键词: LeadArsenicSlimeLeachingStabilisationScorodite
英文摘要: Abstract(#br)A cleaning process, including the steps of alkaline leaching, precipitation of lead and stabilization of arsenic, was proposed for separation of arsenic from lead anode slime generated in lead smelter before valuable metals recycling. The anode slime was first leached by NaOH solution at oxygen pressure, and the optimum conditions were obtained as follows: α (NaOH) = 1.2 (where α represents excess coefficient), temperature 160 °C, liquid-solid ratio 5:1, oxygen partial pressure 1.2 MPa, where the leaching rates of arsenic and lead reached 95.65% and 0.96%. Second, the leaching solution underwent oxidative precipitation for lead separation in the form of PbO 2 using sodium persulfate as oxidizing agent. Under the optimum conditions, the precipitation rate of lead was 94.53%....
全文获取路径: Elsevier  (合作)
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来源刊物:
影响因子:3.398 (2012)

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关键词翻译
关键词翻译
  • removal 消去
  • arsenic 
  • slime 淤泥
  • cleaning 精选
  • process 过程
  • anode 阳极