DEM Simulation and Experimental Investigation of Burden Distribution in the Parallel-Hopper Bell-Less Top Blast Furnace

QIU Jia-yong; ZHANG Jian-liang; SUN Hui; YAN Bing-ji; LI Feng-guang; GUO Hong-wei

doi:10.3879/j.issn.1000-0887.2014.06.002

Volume 35 Issue 6

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Article Navigation > Applied Mathematics and Mechanics > 2014 > 35(6): 598-609

QIU Jia-yong, ZHANG Jian-liang, SUN Hui, YAN Bing-ji, LI Feng-guang, GUO Hong-wei. DEM Simulation and Experimental Investigation of Burden Distribution in the Parallel-Hopper Bell-Less Top Blast Furnace[J]. Applied Mathematics and Mechanics, 2014, 35(6): 598-609. doi: 10.3879/j.issn.1000-0887.2014.06.002

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DEM Simulation and Experimental Investigation of Burden Distribution in the Parallel-Hopper Bell-Less Top Blast Furnace

doi: 10.3879/j.issn.1000-0887.2014.06.002

School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, P.R.China

Funds: The National Basic Research Program of China (973 Program)（2012CB720401）

Received Date: 2013-11-11
Rev Recd Date: 2013-12-23
Publish Date: 2014-06-11

Abstract

Abstract

The flow behavior of particles during the burden distribution process in the parallel-hopper bell-less top blast furnace was investigated with the discrete element method (DEM) as well as a model experiment. It is shown that the DEM simulation results agree with the experimental results well. The contact force distribution in the hopper is nonuniform, i.e., the strong force chains mainly locate in the lower part of the parallel-hopper and in the vicinity of the inclined wall. The flow pattern in the parallel-hopper resembles a deflective funnel flow which comprises the quasi-stagnant zone, the central accelerated flow zone and the wall shear layer. Both the particle falling trajectory and distribution are related to the discharging sequence which is affected by the flow pattern in the hopper. As the flow trajectory is influenced by the opening of the flowgate, it should be controlled within a reasonable range for the stability of burden distribution. The heap peak position varies with the falling point during the heaping process, and the peak radius is larger than that of the falling point.
- blast furnace,
- bell-less top,
- discrete element method,
- burden distribution,
- granular flow,
- force chain

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References(28)

References

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