兼具灵活性和可靠性，旋转式干燥器可处理各种物料，从医药级甜味剂到磷酸盐矿石。设计允许使用最高的可能干燥温度（产品允许的情况下）并且对于产量或粒径波动不敏感。
该多段式干燥器包含一个稍微倾斜的旋转圆筒，配备一系列周边抄板，用于提升、分散和运输物料。抄板针对物料的颗粒运送特性进行设计，随着干燥度的提高可能会有所不同。
操作原理基于通过热气流喷淋或倾泻湿物料。热气包括蒸发的湿气。散失到物料的热量和水蒸气的蒸发会迅速降低气体温度，因此气体会以相对较低的温度离开干燥器。
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