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| Sintering of solid waste generated in iron and steel manufacturing process in Shougang Jingtang |
| Yuan-dong Pei1,2,3,Sheng-li Wu1,2,Shao-guo Chen3,Zhi-xing Zhao3,Gang An4,Zheng-ming Cheng4, Yao-sheng Luo4 |
1 School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China
2 Key Laboratory of Ecology and Recycle Metallurgy, Ministry of Education, University of Science and Technology Beijing, Beijing 100083, China
3 Shougang Research Institute of Technology, Beijing 100043, China
4 Shougang Jingtang Integrated Iron and Steel Co., Ltd., Tangshan 063200, Hebei, China |
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Abstract It is important to make full use of waste generated in the iron and steel manufacturing process for energy saving, emission reduction, low carbon production and a circular economy. Based on research on different kinds of industrial solid wastes from Shougang Jingtang, wastes have been optimized for use in sintering. At first, basic tests for all kinds of solid wastes that may be used in sintering were carried out, including chemical composition, calorific value of a fuel, holding time at high temperatures, the sintering pot test, etc. The results show that the appropriate solid waste ratios for current sintering conditions are: steel slag ��5%, scale 2.0%, environmental ash 2.0%, and cyclone ash 1.0%; blast furnace dry ash, sintering electric field ash, and steelmaking ash should not be circulated in sintering. As for the fuel structure, both coking ash and nut coke should be below 15%. By optimizing the addition of solid wastes, the damage of harmful elements to sintering and blast furnaces has been significantly reduced, which satisfies the demands for blast furnace materials and earns benefits. The utilization of solid wastes has made a contribution to the circular economy and sustainable development.
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Received: 12 July 2016
Published: 07 July 2017
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Corresponding Authors:
PEI Yuan-Dong
E-mail: peiyuandong@126.com
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2017, Vol. 24 
