Phase transformations during the oxidation of fayalite in iron-rich nickel slag

doi:10.3139/146.111888

CORC > 兰州理工大学 > 兰州理工大学 > 省部共建有色金属先进加工与再利用国家重点实验室

	Phase transformations during the oxidation of fayalite in iron-rich nickel slag
	Ma, Yongbo 1,2; Du, Xueyan 1,2
刊名	INTERNATIONAL JOURNAL OF MATERIALS RESEARCH
	2020-04
卷号	111 期号:4 页码:290-296
关键词	Phase transformation Oxidation Fayalite Magnetite Augite
ISSN号	1862-5282
DOI	10.3139/146.111888
英文摘要	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.
资助项目	Science and Technology Major Project Plan of Gansu Province[145RTSA004]
WOS研究方向	Metallurgy & Metallurgical Engineering
语种	英语
出版者	CARL HANSER VERLAG
WOS记录号	WOS:000527105900003
状态	已发表
内容类型	期刊论文
源URL	[http://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
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.