ABSTRACT The microwave drying of a Philippine nickel laterite ore was proposed as an alternative drying method to reduce the air pollution before further pyrometallurgical processing. The effect of thickness of ore bed and microwave power on the specific energy consumption and effective diffusivity were assessed. The results show that the specific energy consumption decreases with increasing the bed thickness and that the specific energy consumption exhibits a minimum at 1200 W. Besides, the increase of nickel laterite thickness and microwave power promotes the effective diffusivity. Compared with the removal of free water, crystalline water removal is proved to be much more energy-intensive. Furthermore, the specific energy consumption in microwave drying of laboratory scale is substantially higher than commercial rotary kiln drying.

中文翻译：

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菲律宾红土镍矿微波加热干燥动力学

摘要 菲律宾红土镍矿的微波干燥被提议作为一种替代干燥方法，以在进一步火法冶金处理之前减少空气污染。评估了矿床厚度和微波功率对比能耗和有效扩散率的影响。结果表明，单位能耗随着床层厚度的增加而降低，单位能耗在1200 W时最小。此外，镍红土厚度和微波功率的增加促进了有效扩散率。与去除游离水相比，结晶水去除被证明是能源密集型的。此外，实验室规模的微波干燥的单位能耗显着高于商业回转窑干燥。