Investigation of bell-less charging based on full scale model experiments.
Investigation of bell-less charging based on full scale model experiments.
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DOI：
10.2355/isijinternational1966.24.799
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发表时间：
1984
影响因子：
1.8
通讯作者：
Kajiwara Yoshimasa;T. Jimbo;T. Joko;Yoichi Aminaga;T. Inada
中科院分区：
文献类型：
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作者：
Kajiwara Yoshimasa;T. Jimbo;T. Joko;Yoichi Aminaga;T. Inada
利用全尺寸实验装置研究了无料钟装料的炉料分布，并在实验结果的基础上建立了模拟模型，发现炉料从料仓的出料行为主要是漏斗流，并利用考虑出料孔上方流动区域内颗粒速度分布的模拟模型对其进行了定量评价。烧结矿表现出比焦炭更强的漏斗流动倾向。通过求解单个颗粒的运动方程，先后估算了溜槽内和溜槽外的配料轨迹。无料钟装药和钟罩装料均观察到混合层的形成。通过对“混合层形成能”的适当估计，得出了钟罩装药的混合层形成程度与钟罩装药相同的经验公式，并根据实验结果建立了炉料分布的模拟模型。通过与不同充电方案下的实验结果的比较，验证了仿真模型的有效性。将该仿真模型成功地应用于平板装药。
The burden distribution in bell-less charging was investigated by the use of a full scale experimental apparatus and simulation models were developed on the basis of experimental results.The discharge behavior of burden from the bunker was found to be primarily funnel flow and was quantitatively evaluated by the simulation model considering the distribution of particle velocity in the flow region above discharge hole. Sinter showed stronger tendency to funnel flow than coke.The burden trajectory in the chute and outside the chute was successively estimated by solving the equation of motion on a single particle.The mixed layer formation was observed in bell-less charging as well as bell-armor charging. The extent of the mixed layer formation in bell-less charging was found to be expressed by the same experimental formula for bell-armor charging through the proper evaluation of “formation energy of mixed layer”.A simulation model of burden distribution was developed on the basis o f experimental results. The validity of the simulation model was confirmed by the comparison with experimental results in various charging schedules. The simulation model was successfully applied to the flat profile charging.