NDLI: Diffusion behavior and distribution regulation of MgO in MgO-bearing pellets

Content Provider	Springer Nature Link
Author	Gao, Qiang jian Shen, Yan song Wei, Guo Jiang, Xin Shen, Feng man
Copyright Year	2016
Abstract	In this paper, the diffusion behavior between MgO and Fe$_{2}$O$_{3}$ (the main iron oxide in pellets) is investigated using a diffusion couple method. In addition, the distribution regulation of MgO in MgO-bearing pellets is analyzed via pelletizing experiments. The results illustrate that MgO is prone to diffuse into Fe$_{2}$O$_{3}$ in the form of solid solution; the diffusion rate considered here is 13.64 µm·min$^{-1}$. Most MgO content distributes in the iron phase instead of the slag phase. The MF phase {(Mg$_{1-x}$ Fe$_{x}$)O·Fe$_{2}$O$_{3}$, x ≤ 1} is generated in the MgO-bearing pellets. However, the distribution of MgO in the radial direction of the pellets is inconsistent. The solid solution portion of MgO in the MF phase is larger in the outer layer of the pellets than in the inner layer. In this work, the approximate chemical composition of the MF phase in the outer layer of the pellets is {(Mg$_{0.35-0.77}$·Fe$_{0.65-0.23}$) O·Fe$_{2}$O$_{3}$} and in the inner layer is {(Mg$_{0.13-0.45}$·Fe$_{0.87-0.55}$) O·Fe$_{2}$O$_{3}$}.
Starting Page	1011
Ending Page	1018
Page Count	8
File Format	PDF
ISSN	16744799
Journal	International Journal of Minerals, Metallurgy, and Materials
Volume Number	23
Issue Number	9
e-ISSN	1869103X
Language	English
Publisher	University of Science and Technology Beijing
Publisher Date	2016-09-06
Publisher Place	Beijing
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	magnesia iron oxide ore pellets diffusion distribution Materials Science Metallic Materials Characterization and Evaluation of Materials Ceramics, Glass, Composites, Natural Methods Surfaces and Interfaces, Thin Films Tribology, Corrosion and Coatings
Content Type	Text
Resource Type	Article
Subject	Materials Chemistry Mechanics of Materials Metals and Alloys Geochemistry and Petrology Mechanical Engineering

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