... rare fly-ash, evenly distributed heat and stable quality.Ball press is widely used in metallurgy, mining, coal, refractory, ... abrasive, fertilizer, ceramics, etc. charcoal ball press feature:1. High efficiency2. Apply for many kinds of ... , high strength, and high hardnesscharcoal ball press working principle:1. Charcoal ball press can press charcoal powder, charcoal dust, coal powder ...