2016-Sustainable Industrial Processing Summit
SIPS 2016 Volume 1: D'Abreu Intl. Symp. / Iron and Steel Making
| Editors: | Kongoli F, Noldin JH, Takano C, Lins F, Gomez Marroquin MC, Contrucci M |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2016 |
| Pages: | 320 pages |
| ISBN: | 978-1-987820-37-9 |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
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Wear Mechanism Research on Hearth Refractory of Xianggang NO.1 Blast Furnace
Liu Fujun1; Ning Xiaojun1; Jianliang Zhang1; Kexin Jiao1; Youyuan Jiang2; Jiayun Dan2;1UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING, Beijing, China; 2HUNAN VALIN XIANGTAN IRON AND STEEL CO.,LTD, Xiangtan, China;
Type of Paper: Regular
Id Paper: 84
Topic: 2
Abstract:
During the blowing out stage of Xianggang NO.1 Blast furnace, the breakage investigation was carried out by focusing on the wear mechanism of hearth carbon bricks and bottom ceramic pad as well as the formation mechanism of the embrittlement layer. By means of Scanning Electron Microscope (SEM) -Energy Disperse Spectroscopy (EDS), X-Ray Diffraction (XRD), chemical analysis, etc., the microstructure, phase composition and content of harmful elements of carbon brick samples were analyzed. The results show that the erosion of hearth sidewall carbon bricks was mainly induced by zinc, alkali, and hot metal, while the formation of embrittlement layer was relevant to the thermal stress, hot metal, harmful elements, etc. The foreign materials, like hot metal and harmful elements, resulted in the embrittlement layer by entering into the cracks that formed by thermal stress. The bottom ceramic pad was eroded by hot metal. Furthermore, TiN0.96 was found between a ceramic pad and bottom carbon brick.