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Selective extraction of arsenic and antimony from gold-bearing sludge using two-stage alkaline leaching

文献类型：期刊论文

作者Wang, Yongliang1,3; Liu, Xiang1,2; Yan, Jingmin1,2; Ye, Shufeng1,3
刊名RESOURCES CONSERVATION AND RECYCLING
出版日期2021-04-01
卷号167页码:8
关键词Arsenic Antimony Gold-bearing sludge Selective leaching NaSb(OH)(6)
ISSN号0921-3449
DOI10.1016/j.resconrec.2020.105388
英文摘要In gold smelting industry, coexisting of arsenic (As) and antimony (Sb) in gold-bearing sludge is a serious issue for the smelting process. This study employed a two-stage leaching methods to selective extract arsenic and antimony from gold-bearing sludge. Arsenic was firstly removed through NaOH leaching, following by Na2S-NaOH leaching to remove antimony in the atmospheric conditions. The first step results show that more than 96% of arsenic can be removed under the conditions of 2 mol/L NaOH, the ratio of liquid to solid (L/S) of 5, 60 degrees C, 400 rpm, 3 h. Meanwhile, the antimony dissolved in the solution is converted into the residue as the state of NaSb(OH)(6) during this process. After Na2S-NaOH leaching, the antimony leaching extent is 97.2% during the condition of 2.5 mol/L Na2S, 0.125 mol/L NaOH, L/S = 5, 70 degrees C and 6 h. In addition, the vulcanization of copper was found in the Na2S-NaOH leaching process, and the CuS appeared in the leaching residue. The results prove that the NaOH leaching following by Na2S-NaOH leaching can selectively extract arsenic and antimony from gold-bearing sludge in the atmospheric conditions.
WOS关键词PYRITE CINDER ; SMELTER ASH ; RECOVERY ; PRETREATMENT ; SEPARATION ; COPPER ; ZINC ; LEAD ; ORE
资助项目Innovation Academy for Green Manufacture, Chinese Academy of Sciences[IAGM-2019-A05] ; National Key Research and Development Program[2019YFC1904204] ; National Key Research and Development Program[2019YFC1908405]
WOS研究方向Engineering ; Environmental Sciences & Ecology
语种英语
WOS记录号WOS:000652020200038
出版者ELSEVIER
资助机构Innovation Academy for Green Manufacture, Chinese Academy of Sciences ; National Key Research and Development Program
源URL[http://ir.ipe.ac.cn/handle/122111/48914]  
专题中国科学院过程工程研究所
通讯作者Wang, Yongliang
作者单位1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Sch Chem & Chem Engn, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Innovat Acad Green Manufacture, Beijing 100190, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Yongliang,Liu, Xiang,Yan, Jingmin,et al. Selective extraction of arsenic and antimony from gold-bearing sludge using two-stage alkaline leaching[J]. RESOURCES CONSERVATION AND RECYCLING,2021,167:8.
APA Wang, Yongliang,Liu, Xiang,Yan, Jingmin,&Ye, Shufeng.(2021).Selective extraction of arsenic and antimony from gold-bearing sludge using two-stage alkaline leaching.RESOURCES CONSERVATION AND RECYCLING,167,8.
MLA Wang, Yongliang,et al."Selective extraction of arsenic and antimony from gold-bearing sludge using two-stage alkaline leaching".RESOURCES CONSERVATION AND RECYCLING 167(2021):8.

入库方式： OAI收割

来源：过程工程研究所

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