Design optimization of insert in serial-hopper bell-less top system of Taisteel blast furnace
BANG Jia-wen1,CHENG Shu-sen1,GE Jun-liang2,CHEN Pei-dun3,XU Wen-xuan1,HU Wei1,XUE Yu-qing3
(1. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China 2. Institute for Science and Technology Information and Strategy, Central Iron and Steel Research Institute, Beijing 100081, China 3. Shandong Taishan Iron and Steel Group Co., Ltd., Laiwu 271100, Shandong, China)
Abstract:To prolong the service life of equipment, usually an insert is installed inside the hopper of the blast furnace, but the insert installed in the hopper has a great influence on the particle size distribution in the hopper and the throat. A full-scale 3D geometrical model was established, which based on the serial-hopper bell-less top system of the Taisteel 1 780 m3 blast furnace. Moreover, the motion of burden particles from the belt to the throat was simulated by the discrete element method at the condition of changing locations and diameters of the insert respectively. Statistical results showed that larger particles stayed near the center while small particles locate near the side wall when the insert is installed in the lower hopper. During the discharging progress of the lower hopper, the particle flow pattern ends to a plug flow compared with the funnel flow at the condition without the insert. Hence, the average diameter fluctuant range of particles decreases in radial direction of the stock surface. In addition, the average particle diameter is relatively larger in the central zone of throat when the insert diameter is equal to the diameter of outlet and the installation height of the insert is half of the height of the cone-shape zone in the lower part of hopper. Moreover, this study has important guidance on the design and installation of the insert and the production of blast furnaces.
收稿日期: 2018-05-17
出版日期: 2019-02-22
引用本文:
邦嘉文,程树森,葛军亮,陈培敦,徐文轩,胡 伟,薛玉卿. 泰钢串罐式高炉炉顶插入件设计优化[J]. , 2019, 54(1): 19-27.
BANG Jia-wen,CHENG Shu-sen,GE Jun-liang,CHEN Pei-dun,XU Wen-xuan,HU Wei,XUE Yu-qing. Design optimization of insert in serial-hopper bell-less top system of Taisteel blast furnace. Iron and Steel, 2019, 54(1): 19-27.