In view of ash-classification of Xibaipo Power Plant,the classification process,system arrangement,principles and structures of improved volute ash-classification system are introduced in detail.

• 针对西柏坡发电有限责任公司粉煤灰的分级处理问题,详细介绍了改进的涡壳式分选系统的设计选型过程、布置及其工作原理、特点。