... machine can press the raw materials for pelletize or press ball, such as coal dust, aluminum powder, active carbon, aluminum ... clay ,braize ,coal, cryolite, chemical fertilizer, plastic, lime stone, pigment, urea, etc. 2,Ball Forming Machines working Principle This series of type ... line, the materials become a finished product from the powder ball.3, Main parameter: Powder:55kw; Capacity: 20t/h, 50, ...