... 000kg/h 3.Shape: ball, oval,pillow... Double-roll type press machine:This machine is specially designed according to the ... twice more than traditional.With advantages of high pressure, high molding rate, high output, easy operation, rare fly-ash, ... products have high density, high strength, and high hardnessBall press machine working principle:1. Charcoal ball press can press charcoal powder, charcoal ...