DocumentCode :
3165841
Title :
The study of the direct reduction of iron based on the lignite solid char
Author :
Binyue Li ; Demin He ; Jun Guan ; Qiumin Zhang
Author_Institution :
Dept. of Chem. Eng., Dalian Univ. of Technol., Dalian, China
Volume :
3
fYear :
2014
fDate :
19-21 Aug. 2014
Firstpage :
813
Lastpage :
817
Abstract :
In this paper, the direct reduction of iron ore (DRI) with the lignite solid char in vertical furnace were investigated on different conditions, such as reduction temperature, residence time, ratio of solid char to iron ore. It is found that, at the range of 800~950°C, the degree of total iron (Fe%) and metallization (M%) increased with the temperature increasing, relatively, when the temperature rise up to 1100°C, Fe% was almost consistent, while M% decreased obviously. Fe% and M% increased with the residence time ranging from 0.25h to 1.5h, when it came up to 2h, both Fe% and M% varied merely. The influence of char consumption ratio on Fe% and M% had the same tendency with the residence time. When the ore size increased from 1~2mm to 5~6mm, Fe% was little change, and M% decreased with ore size increased. Finally, with grinding magnetic of the direct reduction, Fe% increased more than 5%.
Keywords :
blast furnaces; coal; reduction (chemical); DRI; char consumption ratio; degree of total iron; direct reduction; iron ore; lignite solid char; metallization; reduction temperature; residence time; size 1 mm to 2 mm; size 5 mm to 6 mm; temperature 800 C to 950 C; time 0.25 h to 1.5 h; vertical furnace; Carbon; Coal; Furnaces; Iron; Magnetic separation; Solids; Temperature; Direct reduction; Lignite; Residence time; Solid char; Temperature;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Materials for Renewable Energy and Environment (ICMREE), 2013 International Conference on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4799-3335-8
Type :
conf
DOI :
10.1109/ICMREE.2013.6893797
Filename :
6893797
Link To Document :
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