... , double stageFeatures: This machine suit for manufacturing various hollow brick with coal slack,shale, fly ash and clay. With resonable ... decrease greatly the power wasted by equipments shaking. Specitications Model Capacity (piece per hour)Power Rotary speed of main ... medium hard materials, such as clay, shale, coal slack.Model Capacity, m3/hRoller specifications, mmRevolving speed of high speed ...