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The fly ash processing system collects, transports and processes the fly ash in the reaction tower and dust collector. The specific process is that the fly ash discharged from the bottom of the reaction tower and the fly ash discharged from the dust collector ash hopper are concentratedly transported into the fly ash bin through the conveying equipment. The main equipment of the system includes embedded scraper conveyor, collective scraper conveyor, bucket elevator, screw conveyor, fly ash storage bin, etc.