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| Simulation of sintering nine-roller charging based on discrete element method |
| ZHAO Shi-qi，PEI Yuan-dong，FAN Zheng-yun，ZHOU Ji-liang，YIN You-hao |
| （Research Institute of Technology， Shougang Group Co.， Ltd.， Beijing 100043， China） |
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Abstract The longitudinal particle size segregation of the sinter bed is an important factor affecting the sinter quality， and the nine-roller plays a crucial role in the distribution of the material layer on the sintering pallet. Based on the actual size of the sintering nine-roller in a steel enterprise， a three-dimensional model was established， and the distributing process under different conditions was simulated by EDEM soft ware. The results showed that when the nine roller speed increased from 4 to 40 r/min， the thickness of the material layer had no obvious change， and the accumulation angle of particles decreased from about 55° to about 49°， and the longitudinal segregation degree of the material layer increased first and then decreased. When the rotational speed of the nine-roller was 30 r/min， the longitudinal size segregation degree was the highest. When the angle of the nine roller arrangement increased from 33° to 43°， the height of the material layer decreased gradually， and the longitudinal size segregation increased first and then decreased. When the tilt angle of the nine-roller was 38°， the segregation degree was the highest.
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Received: 17 May 2018
Published: 22 February 2019
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2019, Vol. 54 
