... , coal, refractory, abrasive, fertilizer, ceramics, etc. Ball press machine feature:1. High efficiency2. Apply for many kinds of powder like charcoal, coal, mineral, metal.etc ... Coal powder: ModelRoller Dia.(mm)Power (kw)Capacity (t/h)T2902905.51-3T3603607.54-6T430430156-8 ball shape Double-roll type press machine for charcoal powder