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| Advantages and Disadvantages and Its Research Direction of Present Ironmaking Processes |
| ZHOU Yusheng,QIAN Hui,ZHANG Youping,LI Zhaoyi,FAN Jianfeng |
| Baosteel Research Institute, Baoshan Iron and Steel Co., Ltd., Shanghai 201900, China |
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Abstract Advantages and disadvantages and research direction of present ironmaking processes are introduced with the gap between Chinese and advanced ironmaking technology. In the relatively long period to come blast furnace will still be the main ironmaking process. The optimization of blast furnace operation is to take full advantage of top gas pressure, replace coke by coal, reduce energy consumption, and reduce coke ratio to less than 200 kg/t. Reducing the cost of ironmaking and reducing pollution emissions, are helpful to realize clean production in cokemaking plant and sintering plant, and build up ecotype iron&steel corporations. The research direction of direct reduced iron is to strengthen the development of shaft furnace or fluidized bed facilities using syngas from fine coal pressurized gasification，and residual LDG/COG in the steel works. On the basis of COREX3000 process it is important to improve COREX process, develop the equipment working on fine iron ore and fine coal, and new nonblast furnace ironmaking technology, as a new smelting reduction process.
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Received: 01 January 1900
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| [1] |
ZHU De-qing1,TIAN Hong-yu1,PAN Jian1,LIAO Hui2,GUO Zheng-qi1,XUE Yu-xiao1. Comprehensive utilization status and progress of low-grade laterite nickel ore[J]. JOURNAL OF IRON AND STEEL RESEARCH , 2020, 32(5): 351-362. |
| [2] |
ZHANG Jian-liang, SUN Min-min, LI Ke-jiang, LI Hong-tao. Present situation and prospect of dissolution behavior of metallurgical coke in blast furnace hot metal[J]. Iron and Steel, 2020, 55(4): 1-11. |
| [3] |
WANG Jin-liang, DAI Xi, ZHANG Wei, GONG Shu-shan, ZHOU Guo-zhi, ZHANG Wen-hai. Advances of non-blast furnace flash iron-making researches[J]. Iron and Steel, 2020, 55(4): 100-105. |
| [4] |
ZHANG Han-quan,GAO Wang-jie,HU Chao-jie,YU Hong. Phase transformation of iron in copper slag coalbased direct reduction[J]. JOURNAL OF IRON AND STEEL RESEARCH , 2020, 32(4): 311-321. |
| [5] |
ZHANG Xiao-hua, ZHAO Kai, BAI Geng-chen, ZHANG Yu-zhu, GAO Jian-jun, ZHANG Ying-yi. Thermal analysis of rotary kiln-oxygen combustion melting furnace under multi-constraint conditions[J]. Iron and Steel, 2020, 55(3): 9-15. |
| [6] |
LI Xiao-ming, LI Yi, XING Xiang-dong. Particle growth characteristics of metallic iron in direct coal-based reduction of nickel slag[J]. Iron and Steel, 2020, 55(3): 104-109. |
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2009, Vol. 44 
