... powder:400-1500kg/h; coal powder:1000-10,000kg/h 3.Shape: ball, oval,pillow... Double-roll type press machine:This ... high hardnessBall press machine working principle:1. Charcoal ball press can press charcoal powder, charcoal dust, coal powder, etc into ... -shaped ball, square-shaped ball, columnar-shaped ball, banding-shape ball, cake-shaped ball, etcTechnical Data:Charcoal powder: ModelRoller ...