... can not bear engough pressure, pellets can not be shaped well and without high density, but this ... material piles up unevenly in thickness. 2. This pellet mill's flat die is static, roller ... fold capacity. No flat die, ring die can do this. 4. Macroporous die, wire joining circular tube ... is static, then pelletizing large-diameter briquette, can die aperture outside wire joining circular tube, increasing ...