Influence of Collapse Phenomenon on Unburned Pulverized Coal in the Lumpy Zone of COREX Melter Gasifier

Abstract:

A thermal model was established for the study about influence of collapse phenomenon on unburned pulverized coal in COREX melter gasifier. In the model, the ore was simulated by wax, the coke and lump coal were simulated by maize, UPC is simulated by pulverized coal. The results showed that too high blast temperature could lead to collapse in the model, and under normal or collapsing furnace state, UPC is dispersed or aggregated distribution in packed bed. According to this experimental results and the previous research results, the suggestions about COREX were given at last. Keywords: COREX melter gasifier; pulverized coal injection; unburned pulverized coal; physical experiment

• Periodical: Advanced Materials Research (Volumes 774-776)
• Pages: 1434-1437
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.774-776.1434
• Online since: September 2013
• Authors: Xiao Lei Zhou, Zhong Ning Du
• Keywords: Corex Melter Gasifier, Physical Experiment, Pulverized Coal Injection, Unburned Pulverized Coal

References

[1] Jian-ming Pang, Pei-min Guo and Pei Zhao, Reduction of 1-3 mm iron ore by H2 in a fluidized bed[J]. International Journal of Minerals Metallurgy and Materials, 2009(06), 620-625.

[2] Cheng-shan Wang and Xiao-jing Mu, A mathematical model capable of describing the liquid flow mainly in a blast furnace[J]. International Journal of Minerals Metallurgy and Materials, 2009(16), 505-511.

DOI: 10.1016/s1674-4799(09)60088-1

[3] Pei Zhao and Peimin Guo, Fundamentals of fast reduction of ultrafine iron ore at low temperature[J]. International Journal of Minerals Metallurgy and Materials, 2008(15), 104-109.

DOI: 10.1016/s1005-8850(08)60021-3

[4] LI Hai-feng, WANG Chen, ZOU Zong-shu, Coal injection model for COREX and its application analysis[J]. The Chinese Journal of Process Engineering(in Chinese), 2009, (S1), 349-353.

[5] Li Kang, Wu Keng and Yang Sen, COREX coal injection simulation experiment research on different spray guns[A], Proceedings of the thirteenth session of metallurgical reaction engineering [C], Baotou, 2009, 22-24.

[6] Zhang Tao, Peng Hua-guo and Tang Xiao-Wei, Smelting reduction furnace pulverized coal injection technology[P], Chinese patent: CN1840712, 2006-10-04.

[7] Cao Xi-rong, Zhang Bing-huai and Yang Hai-bin, Research on the combustion and utilization of PCI for COREX[J], Research on iron and steel(in Chinese), 2009(37), 17-30.

[8] Du He-gui, Nie Da-zhi, Blast furnace coal injection of unburned coal powder in furnace behavior experimental study[J], Ironmaking(in Chinese), 1988(04), 1-7.

[9] Li Xin, Chen Xing-qiu, Experimental Investigation on Behavior of UPC in Blast Furnace[J], Journal of Northeastern University(Natural Science)(in Chinese), 2000(02), 177-180.

[10] Shen Feng-man, Zhang Peng-cheng, The UPC distribution in the blast furnace[J], Ironmaking(in Chinese), 1999(01), 32-34.

[11] Li Hong-hui, Sun Liang, Shen Feng-man, Distribution of unburned pulverized coal and effects on pressure drop of gas in packed bed[J], Journal of Northeastern University(Natural Science)(in Chinese), 2001, (03), 303-306.

[12] Hiroshi TAKAHASHI, Nobuyuki KOMATSU. Cold Model Study on Burden Behaviour in the Lower Part of Blast Furnace[J]. ISIJ International, 1993, 33(6): 655-663.

DOI: 10.2355/isijinternational.33.655