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Characterization of elemental sulfur in chalcopyrite leach residues using simultaneous thermal analysis
Lv, Cuicui1,2,3; Wu, Hao2; Lin, Weigang2,3; Illerup, Jytte Boll2; Karcz, Adam Paul2; Ye, Shufeng1; Damo, Anne Juul2
2019-09-01
Source PublicationHYDROMETALLURGY
ISSN0304-386X
Volume188Pages:22-30
AbstractA key component in the atmospheric leaching of metal sulfides is the oxidation of sulfide to either elemental sulfur or hexavalent sulfur. The final oxidation state of sulfur significantly influences the economic viability of a leaching process because of its effects on oxygen consumption, acid generation, and surface passivation. Thus, in the process of developing new leaching technologies, it is important to both characterize and quantify the sulfur oxidation products. In this work, a new method based on Simultaneous Thermal Analysis (STA) is established for the quantification and thermal characterization of elemental sulfur in chalcopyrite leach residues. The STA method refers to the simultaneous application of thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). The DSC measurements yield information on phase transformation, which can be used to identify the sulfur allotropes. The linear relationship between the melting enthalpy of beta-sulfur determined by DSC and the sulfur content determined by TGA is expediently used to quantify the unknown sulfur content in leach residues.
KeywordChalcopyrite leach residue Elemental sulfur Allotrope Quantification STA
DOI10.1016/j.hydromet.2019.05.020
Language英语
WOS KeywordFERRIC ION ; PART I ; DISSOLUTION ; ELECTROCHEMISTRY ; ALLOTROPES ; KINETICS ; PASSIVATION ; BEHAVIOR ; SURFACE
Funding ProjectInnovation Fund Denmark ; FLSmidth A/S ; Hempel ; Technical University of Denmark[39-2013-2] ; SDC ; FLSmidth Company
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
Funding OrganizationInnovation Fund Denmark ; FLSmidth A/S ; Hempel ; Technical University of Denmark ; SDC ; FLSmidth Company
WOS IDWOS:000483641000003
PublisherELSEVIER
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Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/30761
Collection中国科学院过程工程研究所
Corresponding AuthorWu, Hao; Damo, Anne Juul
Affiliation1.Chinese Acad Sci, State Key Lab Multiphase Complex Syst, Inst Proc Engn, North 2nd St, Beijing, Peoples R China
2.Tech Univ Denmark, Dept Chem & Biochem Engn, Bldg 229, DK-2800 Lyngby, Denmark
3.Univ Chinese Acad Sci, Sino Danish Coll, 380 Huaibeizhuang, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Lv, Cuicui,Wu, Hao,Lin, Weigang,et al. Characterization of elemental sulfur in chalcopyrite leach residues using simultaneous thermal analysis[J]. HYDROMETALLURGY,2019,188:22-30.
APA Lv, Cuicui.,Wu, Hao.,Lin, Weigang.,Illerup, Jytte Boll.,Karcz, Adam Paul.,...&Damo, Anne Juul.(2019).Characterization of elemental sulfur in chalcopyrite leach residues using simultaneous thermal analysis.HYDROMETALLURGY,188,22-30.
MLA Lv, Cuicui,et al."Characterization of elemental sulfur in chalcopyrite leach residues using simultaneous thermal analysis".HYDROMETALLURGY 188(2019):22-30.
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