Effect of mixed dust on sinter properties
- Research Inst. of Industrial Science and Technology, Pohang (Korea, Republic of)
In recent years low grade ion ores such as limonite and dusts containing iron oxides are being increasingly used in the sintering process. The regulations for pollution control are being more severely strengthened year by year, therefore, companies are facing the important issue of producing high quality sinters using low grade iron ores with the least environmental contamination. 250 thousand tons of mixed dust corresponding to 25% of the annual total dusts generated at Pohang steel works are being reused in sinter plants. The dusts collected by DL-sinter machine, LD-converter, BF-ore bin and incinerator are transported to the open yard for drying. They are mixed according to the relatively constant ratio produced by the above dust source and added to the mixed raw materials for sintering. The added quantity of mixed dust was so small (average 1.8 wt.%) compared with the total raw mix that the authors had little interest and no research result has yet been achieved. In this research, therefore, under the similar conditions to the actual operation in the sinter plant, sintering pot tests were carried out while changing the added quantity of mixed dust. The physical and chemical properties of the sample sinter were investigated and the results are presented in this report.
- OSTI ID:
- 460650
- Report Number(s):
- CONF-960317-; ISBN 1-886362-12-2; TRN: IM9718%%232
- Resource Relation:
- Conference: 79. steelmaking and 55th ironmaking conference, Pittsburgh, PA (United States), 24-27 Mar 1996; Other Information: PBD: 1996; Related Information: Is Part Of Ironmaking conference proceedings: Volume 55; PB: 807 p.
- Country of Publication:
- United States
- Language:
- English
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