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Selective extraction of arsenic and antimony from gold-bearing sludge using two-stage alkaline leaching
Wang, Yongliang1,3; Liu, Xiang1,2; Yan, Jingmin1,2; Ye, Shufeng1,3
2021-04-01
Source PublicationRESOURCES CONSERVATION AND RECYCLING
ISSN0921-3449
Volume167Pages:8
AbstractIn 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.
KeywordArsenic Antimony Gold-bearing sludge Selective leaching NaSb(OH)(6)
DOI10.1016/j.resconrec.2020.105388
Language英语
WOS KeywordPYRITE CINDER ; SMELTER ASH ; RECOVERY ; PRETREATMENT ; SEPARATION ; COPPER ; ZINC ; LEAD ; ORE
Funding ProjectInnovation 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 Research AreaEngineering ; Environmental Sciences & Ecology
WOS SubjectEngineering, Environmental ; Environmental Sciences
Funding OrganizationInnovation Academy for Green Manufacture, Chinese Academy of Sciences ; National Key Research and Development Program
WOS IDWOS:000652020200038
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/48915
Collection中国科学院过程工程研究所
Corresponding AuthorWang, Yongliang
Affiliation1.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
Recommended Citation
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.
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