... 000kg/h 3.Shape: ball, oval,pillow... Double-roll type press machine:This machine is specially designed according to the characteristics of ... mining, coal, refractory, abrasive, fertilizer, ceramics, etc. Ball press machine feature:1. High efficiency2. Apply for many kinds of powder ... mode, with the roll rotation, material pressure on a small become larger. When the material to the two rollers rotating ...