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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。
Through the establishment of physical and mathematical models of slag granulation process, the dry centrifugal granulation process of blast furnace slag was numerically simulated and verified by small-scale experiments. According to the dry centrifugal granulation process of flat turntable, the influences of different slag temperatures (or viscosities), surface tension and turntable speed on the centrifugal granulation process were analyzed and compared, and the optimum process parameters of centrifugal granulation . The results show that the granulation effect is greatly improved with the increase of the rotation speed of the turntable. The influence of the slag temperature (or viscosity) on the granulation effect is also larger. The higher the slag temperature (or the smaller the viscosity), the better the granulation effect ; The greater the surface tension of slag, the worse the granulation effect.