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| Experimental Investigation of Cellulose Used as COREX Coal Briquette Binder |
| QIAN Hui1,ZHOU Yu-shen2,YANG Jun-he3,ZHANG Zuo4 |
（1. Department of Iron-making and Sustainability, Baosteel Research Institute, Shanghai 201900, China
2. Center Iron and Steel Research Institute, Beijing 100081, China
3. School of Material Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
4. Department of Material Engineering, Shanghai Institute of Technology, Shanghai 200233, China |
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Abstract With methyl cellulose (MC) or hydroxypropyl methylcellulose (HPMC) as binder, a series of tests were conducted to investigate the properties of coal briquette, such as shatter strength, mechanical strength of char, CO2 reactivity of char and the strength of char after reaction. Comparing with lump coal, coal briquette can form larger char after pyrolysis. But the char strength after reaction from briquette is not as good as from lump coal. Adding primary coking coal can improve coal briquette high-temperature properties obviously so that it can reach the level of lump coal in all aspects, or even better than lump coal. The results of tests demonstrate that coal briquette with MC or HPMC as binder can be used as COREX fuel. And then, a new technical solution to improve COREX fuel conditions and broaden the available resources for COREX process is provided.
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Received: 01 February 2012
Published: 30 October 2012
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2012, Vol. 47 
