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Investigation of Reaction Mechanism on the Lime-Free Roasting of Chromium-Containing Slag
Yu, Kai-Ping1,2,3; Zhang, Hong-Ling1,3,4; Chen, Bo2; Xu, Hong-Bin1,3,4; Zhang, Yi1,3,4
2015-12-01
Source PublicationMETALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE
ISSN1073-5615
Volume46Issue:6Pages:2553-2563
AbstractThe lime-free roasting process of trivalent chromium-containing slag was investigated. The effect of Fe and liquid phase on the conversion reaction of chromium was discussed. The oxidation of trivalent chromium depends greatly on the diffusion of Na+ and O-2. Both the raw material Na2CO3 and the intermediate product NaFeO2 serve as the carriers of Na+. The Na+ diffusion is improved by the binary liquid phase of Na2CrO4-Na2CO3, whereas excess liquid phase results in a low conversion rate of chromium by hindering the diffusion of oxygen towards the reaction interface. With the increasing of liquid volume, the controlled step of chromium oxidation changes from Na+ diffusion to oxygen diffusion. The mechanism study showed that the volume of liquid phase increased while raising the reaction temperature or prolonging the reaction time. Based on the role of both liquid phase and Fe, the oxidation process of chromium was summarized as a three-stage model: the Na+ diffusion-controlled stage, the O-2 diffusion-controlled stage, and the oxidation reaction halted stage. (C) The Minerals, Metals & Materials Society and ASM International 2015
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1007/s11663-015-0428-5
Indexed BySCI
Language英语
WOS KeywordTITANOMAGNETITE ; MINERALS
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
Funding OrganizationNational Natural Science Foundation of China(11204304 ; National Basic Research Program (973 Program) of China(2013CB632600) ; National High-tech Research and Development Program of China(2011AA060702) ; 21376251 ; 21406233)
WOS IDWOS:000367067600018
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/20083
Collection研究所(批量导入)
Affiliation1.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China
2.Fuzhou Univ, Coll Zijin Min, Fuzhou 350108, Fujian, Peoples R China
3.Chinese Acad Sci, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
4.Chinese Acad Engn, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Yu, Kai-Ping,Zhang, Hong-Ling,Chen, Bo,et al. Investigation of Reaction Mechanism on the Lime-Free Roasting of Chromium-Containing Slag[J]. METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE,2015,46(6):2553-2563.
APA Yu, Kai-Ping,Zhang, Hong-Ling,Chen, Bo,Xu, Hong-Bin,&Zhang, Yi.(2015).Investigation of Reaction Mechanism on the Lime-Free Roasting of Chromium-Containing Slag.METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE,46(6),2553-2563.
MLA Yu, Kai-Ping,et al."Investigation of Reaction Mechanism on the Lime-Free Roasting of Chromium-Containing Slag".METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE 46.6(2015):2553-2563.
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