以甲基纤维素（MC）和羟丙基甲基纤维素（HPMC）为粘结剂，通过系列试验考察了型煤的落下强度、快速热解后半焦的机械强度、半焦与COz的反应性及反应后强度等各项指标。经与块煤对比，型煤所形成的半焦颗粒较大，但型煤半焦与COz反应后的强度不如块煤。型煤中配人炼焦用强粘煤后可以显著改善型煤的热性能，使其各项指标均能达到甚至超过块煤水平。试验结果表明：以纤维素为粘结剂的型煤可用作COREX燃料，从而为改善COREX燃料条件、拓宽COREX可用资源提供了新的技术途径。
With methyl cellulose (MC) or hydroxypropyl methyleellulose (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 condi- tions and broaden the available resources for COREX process is provided.
参考文献
| [1] | 周渝生,钱晖.COREX熔融还原炼铁新工艺[J].世界钢铁,2005(01):22-26. |
| [2] | Suika D.COREX and FINEX Technology Process Update[A].Shanghai:Baosteel Group Co,2006 |
| [3] | 李维国.COREX-3000生产现状和存在问题的分析[J].宝钢技术,2008(06):11-18. |
| [4] | P. Prachethan Kumar;D. Gupta;T. K. Naha .Factors affecting fuel rate in Corex process[J].Ironmaking & Steelmaking: Products and applications,2006(4):293-298. |
| [5] | Bohm C;Millner R;Stockinger J et al.Potential Solutions for Reducing CO2 Emissions With COREX Teehnology[J].Met allurgical Plant and Technology,2003,26(04):4. |
| [6] | P. Prachethan Kumar;S. C. Barman;B. M. Reddy .Raw materials for Corex and their influence on furnace performance[J].Ironmaking & Steelmaking: Products and applications,2009(2):87-90. |
| [7] | P. Prachethan Kumar;Y.S. Rao;K. Chidambaran .Influence of Coal Size on the Performance of Corex Process[J].Steel Research International,2009(3):179-184. |
| [8] | 王玉明.COREX用煤及检测块煤热解新方法[J].宝钢技术,2011(06):52-55. |
| [9] | POSCO公司 .具有优良强度的煤饼及其制饼方法[P].中国,01805221.5,2012-2-27. |
| [10] | POSCO公司 .熔融还原工艺用的煤团块及其制造方法[P].中国,03801609.5,2012-2-27. |
| [11] | 郭树才.煤化工工艺学[M].北京:化学工业出版社,1992 |
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