钢铁研究学报, 2017, 29(1): 19-25.
10.13228/j.boyuan.issn1001-0963.20160047
在高炉渣离心粒化热回收工艺中，粒化得到的颗粒尺寸对余热回收效果至关重要，而颗粒尺寸又与粒化器表面液膜的流动特性息息相关，因此增进对粒化器表面液膜流动特性的认识可为离心粒化技术提供指导.采用数值模拟方法研究了离心粒化过程中粒化器结构对液膜流动的影响；讨论了半径、倾角、深度等参数对粒化器表面液膜厚度的影响及其作用机理，并获取了流体在粒化器表面运动轨迹与液膜厚度的关系.结果表明：转杯粒化器的内倾角介于40°~60°之间或深度介于10~12 mm之间时粒化效果最佳，其相应液膜厚度约为0.300 mm.与等径的转盘粒化器相比，其液膜厚度减小约32％.粒化器结构对液膜厚度的影响可归因于粒化器表面流体运动轨迹长度的变化，当流体运动轨迹长度增大时，其对应的液膜厚度就越小，二者呈非线性负相关关系.
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