2016-Sustainable Industrial Processing Summit
SIPS 2016 Volume 6: Yagi Intl. Symp. / Metals & Alloys Processing
| Editors: | Kongoli F, Akiyama T, Nogami H, Saito K, Fujibayashi A |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2016 |
| Pages: | 480 pages |
| ISBN: | 978-1-987820-46-1 |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
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Research on sintering characteristics of titanium sands after grinding and its influence mechanism on the quality of sinter
Ya-peng Zhang1; Jian-liang Zhang2; Zhen-yang Wang3; Zhengjian Liu4; Xing-le Liu3;1, Beijing, China; 2SCHOOL OF METALLURGICAL AND ECOLOGICAL ENGINEERING, UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING, Beiijing, China; 3SCHOOL OF METALLURGICAL AND ECOLOGICAL ENGINEERING, UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING, Beijing, China; 4UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING, Beijing, China;
Type of Paper: Regular
Id Paper: 36
Topic: 3
Abstract:
Size distribution, microstructure and high temperature properties of titanium sands before and after grinding are researched in the paper. Sinter pot tests and scanning electron microscope and energy dispersive spectrometer (SEM-EDS) tests are conducted to identify the influence and mechanism of titanium sands to sinter quality. The research shows that the micro-morphology of titanium sands become more irregular after grinding, and the granulation of titanium sands get strengthened. Meanwhile, the high temperature characteristics of sintering are different with the common iron ore fines: with titanium sands becoming finer, the assimilation temperature improves for 21 ¡æ, and the liquid phase fluidity index decreases by 0.35 at 1280 ¡æ; the reason caused the difference is that more perovskites are formed by CaO and titanium sands after grinding which can hinder the assimilation reaction and get liquid phase more sticky. Sinter pot test is conducted, and reduction index (RI) of sinter produced by the same proportion of titanium sands with a different distribution in blends improves by 3.8 % as titanium sands getting finer. The reasons are that titanium sands are distributed more uniform in the mixture after grinding, resulting in the increase of phase particles containing titanium in sintered ores, and many micro-cracks emerged in the reduction which is in favor of reducing gas diffusion.
Keywords:
Metallurgy; Optimization; Structure; Titanium;References:
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