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Study of the kinetics of pyrite oxidation under controlled redox potential
Sun, Heyun1; Chen, Miao3; Zou, Laichang2; Shu, Rongbo4; Ruan, Renman1
2015-05-01
Source PublicationHYDROMETALLURGY
ISSN0304-386X
Volume155Issue:MAYPages:13-19
Abstract

An experimental study of the ferric oxidation kinetics of pyrite was conducted under controlled redox potentials of 700, 800 and 900 mV (vs. SHE). The rate of pyrite oxidation strongly depends on redox potential, increasing fivefold when redox potential is increased by 100 mV. Pyrite dissolution is significantly affected by temperature. Activation energies of 56.6, 55.9 and 51.9 kJ/mol calculated from pyrite dissolution at redox potentials of 700, 800 and 900 mV (vs. SHE) respectively confirmed a chemical or an electrochemical rate-determining reaction on the pyrite surface.

KeywordPyrite Leaching Kinetics Controlled Redox Potential
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1016/j.hydromet.2015.04.003
Indexed BySCI
Language英语
WOS KeywordRATE-DETERMINING STEP ; SULFATE-IONS ; FERRIC IRON ; LEACHING KINETICS ; HYDROGEN-PEROXIDE ; DISSOLVED-OXYGEN ; TEMPERATURE ; DISSOLUTION ; ACID ; ARSENOPYRITE
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000356192200003
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Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/19302
Collection生化工程国家重点实验室
Affiliation1.Chinese Acad Sci, Inst Proc Engn, Natl Key Lab Biochem Engn, Beijing 100190, Peoples R China
2.Zijin Min Grp Co Ltd, State Key Lab Gold Extract, Shanghang 364200, Peoples R China
3.CSIRO Proc Sci & Engn, Clayton, Vic 3169, Australia
4.Chinese Acad Geol Sci, Inst Multipurpose Utilizat Mineral Resources, Changchun, Peoples R China
Recommended Citation
GB/T 7714
Sun, Heyun,Chen, Miao,Zou, Laichang,et al. Study of the kinetics of pyrite oxidation under controlled redox potential[J]. HYDROMETALLURGY,2015,155(MAY):13-19.
APA Sun, Heyun,Chen, Miao,Zou, Laichang,Shu, Rongbo,&Ruan, Renman.(2015).Study of the kinetics of pyrite oxidation under controlled redox potential.HYDROMETALLURGY,155(MAY),13-19.
MLA Sun, Heyun,et al."Study of the kinetics of pyrite oxidation under controlled redox potential".HYDROMETALLURGY 155.MAY(2015):13-19.
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