... coal powder:1000-10,000kg/h 3.Shape: ball, oval,pillow... Double-roll type press machine:This machine ... very large, production time is twice more than traditional.With advantages of high pressure, high molding rate, ... mineral, metal.etc.3. Make round type or pillow type or oblong type charcoal ball.4. The ... charcoal dust, coal powder, etc into ball or pillow-shaped charcoal.2. This series of Coal ball ...