University of Oulu

Guo Chen, Yeqing Ling, Qiannan Li, Hewen Zheng, Qi Jiang, Kangqiang Li, Lei Gao, Mamdouh Omran, Jin Chen, Highly efficient oxidation of Panzhihua titanium slag for manufacturing welding grade rutile titanium dioxide, Journal of Materials Research and Technology, Volume 9, Issue 4, 2020, Pages 7079-7086, ISSN 2238-7854,

Highly efficient oxidation of Panzhihua titanium slag for manufacturing welding grade rutile titanium dioxide

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Author: Chen, Guo1,2; Ling, Yeqing1; Li, Qiannan1;
Organizations: 1Kunming Key Laboratory of Energy Materials Chemistry, Key Laboratory of Green-Chemistry Materials in University of Yunnan Province, Yunnan Minzu University, Kunming 650500, PR China
2Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, PR China
3Process Metallurgy Research Group, Faculty of Technology, University of Oulu, Oulu 4600, Finland
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 2.4 MB)
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Language: English
Published: Elsevier, 2020
Publish Date: 2020-06-09


Because of the shortage of natural rutile, synthetic rutile is a widely used substitute welding materials for natural rutile owing to its excellent mechanical and thermal properties. In this work, rutile TiO2 was prepared from oxidation roasting titanium slag, which can be used as special welding materials. The phase microstructure characteristics of the raw materials and the roasted samples were characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM) and Fourier-transform infrared (FT-IR) spectroscopic analysis. Results indicated that the contents of sulfur (S) and carbon (C) in titanium slag decreased during oxidation roasting process, and the decreases of sulfur and carbon contents were mainly ascribed to the formation of corresponding oxides. XRD and FT-IR results revealed the formation of rutile TiO₂ phase after titanium slag through oxidization roasting; additionally, observed from SEM patterns, the rutile TiO₂ phase with a complex short rod-like crystal appeared in the products. Since the contents of sulfur (S), phosphorus (P) and carbon (C) element were all below 0.030% in the prepared rutile TiO₂ with the recommended roasting approach (roasted at 1100 °C for 120 min), the present work highlights that Panzhihua titanium slag is a potential resource of titanium for the manufacture of high-quality rutile TiO₂ applicable for special welding materials industry.

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Series: Journal of materials research and technology
ISSN: 2238-7854
ISSN-E: 2214-0697
ISSN-L: 2238-7854
Volume: 9
Issue: 4
Pages: 7079 - 7086
DOI: 10.1016/j.jmrt.2020.05.044
Type of Publication: A1 Journal article – refereed
Field of Science: 218 Environmental engineering
Funding: Financial supports from the National Natural Science Foundation of China (Nos. 51504110, 51404114), and Innovative Research Team (in Science and Technology) in University of Yunnan Province were sincerely acknowledged.
Copyright information: © 2020 The Authors. Published by Elsevier B.V. This is an open access article under theCC BY-NC-ND license (