高炉渣干式离心粒化的建模仿真研究

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基金项目:

湖北省教育厅重点科研资助项目(D20101110)

Simulation Study on the Dry Centrifugal Granulation Process of Blast Furnace Slag

1. Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education, College of Materials and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, Hubei, China;
2. China City Environment Protection Engineering Limited Company, Wuhan 430071, Hubei, China

摘要: 通过建立熔渣粒化过程的物理和数学模型,对高炉熔渣干式离心粒化过程进行了数值模拟,并通过小型试验加以验证。针对平板式转盘干式离心粒化过程,分析比较了不同的熔渣温度(或黏度)、表面张力和转盘转速等因素对熔渣离心粒化过程的影响,获得离心粒化的最佳工艺参数。研究发现,随着转盘转速的增加,粒化效果大大改善;熔渣温度(或黏度)对粒化效果的影响也较大,熔渣温度越高(或黏度越小),粒化效果越好;熔渣的表面张力越大,粒化效果越差。
- 高炉熔渣 /
- 干式离心粒化 /
- 数值模拟
Abstract: In this study,a physical and mathematical model was established to simulate the dry centrifugal granulation (DCG) process of blast furnace slag,and the process was verified by small scale experiments.The influences of various factors,including molten slag temperature(or viscosity),surface tension and rotary speed of the flat plate-type disc,on DCG process were analyzed and optimum parameters were obtained.The results show that the granulation can be greatly improved by increasing the rotary speed.In addition,by boosting the temperature(or reducing the viscosity) or decreasing surface tension of the molten slag,the granulation effects can also be promoted.
- blast furnace slag /
- dry centrifugal granulation /
- numerical simulation