Amount of surface moisture is a significant index to evaluate the quality of coal products and also is attached high importance to all along by vast members engaging in coal preparation technology who have been seeking effective dewatering technologies and equipment for long years. 外在水分的高低是衡量煤炭产品质量的一个重要指标,因此,一直备受选煤科技工作者的关注,多年来一直寻求有效的脱水工艺和设备。