Phase transformations during the oxidation of fayalite in iron-rich nickel slag
Ma, Yongbo1,2; Du, Xueyan1,2
2020-04
发表期刊INTERNATIONAL JOURNAL OF MATERIALS RESEARCH
ISSN1862-5282
卷号111期号:4页码:290-296
摘要

Phase 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.

关键词Phase transformation Oxidation Fayalite Magnetite Augite
DOI10.3139/146.111888
收录类别SCI ; SCIE ; EI
语种英语
资助项目Science and Technology Major Project Plan of Gansu Province[145RTSA004]
WOS研究方向Metallurgy & Metallurgical Engineering
WOS类目Metallurgy & Metallurgical Engineering
WOS记录号WOS:000527105900003
出版者CARL HANSER VERLAG
EI入藏号20202208757625
来源库WOS
引用统计
被引频次:2[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符https://ir.lut.edu.cn/handle/2XXMBERH/64293
专题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
通讯作者Du, Xueyan
作者单位1.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
第一作者单位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
通讯作者单位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
第一作者的第一单位省部共建有色金属先进加工与再利用国家重点实验室
推荐引用方式
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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