... classifying efficiency, and Low energy consumption. Multi-stage ClassifierOperating principle:Classifier, together with cyclone separator, dedusting filter and ... 30t/h.-Product fineness D97: 6μ-45μ, classifying rate >70%.-Vertical classifying turbo-wheel, low rotating speed, wear -resistance and low ... narrow size of distribution.-Programmable control system and simple operation. Multi-stage Classifier