Phase transformations during the oxidation of fayalite in iron-rich nickel slag
Ma, Yongbo1,2; Du, Xueyan1,2
2020-04
Source PublicationINTERNATIONAL JOURNAL OF MATERIALS RESEARCH
ISSN1862-5282
Volume111Issue:4Pages:290-296
AbstractPhase transformations during the oxidation of fayalite (Fe2SiO4) are investigated for the recovery of iron from iron-rich nickel slag by oxidation-magnetic separation. The proportions of various phases calculated by FactSage 7.1 show that augite and spinel are the major phases in the FeO-SiO2-MgO-CaO-O-2 system in air atmosphere. The decreased content of Fe2+ shows that Fe2SiO4 is gradually oxidized into Fe3O4 with increasing oxidation time. XRD patterns demonstrate that Fe3O4 and Ca(Mg,Fe)Si2O6 are the dominant phases after the oxidation. The Mossbauer spectrum indicates that 93.1 wt.% of iron in oxidized nickel slag is in magnetic minerals, while a limited amount of iron is contained in non-magnetic minerals. Ca(Mg,Fe)Si2O6 was formed during the heating stage in Ar atmosphere through the polymerization of SiO44- and also via peritectic reaction after the isothermal oxidation.
KeywordPhase transformation Oxidation Fayalite Magnetite Augite
DOI10.3139/146.111888
Indexed BySCI
Language英语
Funding ProjectScience and Technology Major Project Plan of Gansu Province[145RTSA004]
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000527105900003
PublisherCARL HANSER VERLAG
Citation statistics
Cited Times [WOS]:0   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.lut.edu.cn/handle/2XXMBERH/64293
Collection省部共建有色金属先进加工与再利用国家重点实验室
材料科学与工程学院
研究生院
Corresponding AuthorDu, Xueyan
Affiliation1.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou, Peoples R China
2.Lanzhou Univ Technol, Sch Mat Sci & Engn, 287 Langongping Rd, Lanzhou 730050, Peoples R China
First Author AffilicationState Key Laboratory Of Gansu Advanced Non-Ferrous Metal Materials;  Coll Mat Sci & Engn
Corresponding Author AffilicationState Key Laboratory Of Gansu Advanced Non-Ferrous Metal Materials;  Coll Mat Sci & Engn
First Signature AffilicationState Key Laboratory Of Gansu Advanced Non-Ferrous Metal Materials
Recommended Citation
GB/T 7714
Ma, Yongbo,Du, Xueyan. Phase transformations during the oxidation of fayalite in iron-rich nickel slag[J]. INTERNATIONAL JOURNAL OF MATERIALS RESEARCH,2020,111(4):290-296.
APA Ma, Yongbo,&Du, Xueyan.(2020).Phase transformations during the oxidation of fayalite in iron-rich nickel slag.INTERNATIONAL JOURNAL OF MATERIALS RESEARCH,111(4),290-296.
MLA Ma, Yongbo,et al."Phase transformations during the oxidation of fayalite in iron-rich nickel slag".INTERNATIONAL JOURNAL OF MATERIALS RESEARCH 111.4(2020):290-296.
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