High-quality granules are created through turning: The large wheel compost turner and the disc granulation line

The foundation of quality for a disc granulation production line lies not in the granulator itself, but in the large-wheel windrow turner operating within the fermentation tank. 1.Turning Determines Material Properties Disc granulation places strict demands on feedstock: it requires uniform fineness, moderate moisture content, and sufficient adhesiveness. These properties are determined during the fermentation stage. As the large wheel compost turner moves through the tank, its large-diameter vertical rotating discs powerfully shear and toss the material; this action cuts long fibers and breaks up hard clumps, resulting in a fine, uniform texture. Simultaneously, the turning process introduces air into the pile, fostering the proliferation of aerobic microorganisms and ensuring thorough decomposition of organic matter. This naturally enhances the material's adhesiveness—providing the "natural binding force" essential for disc granulation technology. 2.Moisture Control Is Key Disc granulation requires a stable moisture content of 25%–35%. If turning is delayed, localized anaerobic conditions and uneven moisture distribution occur, leading to inconsistent feedstock (alternating between too dry and too wet). This disrupts the process, causing a cycle where the material either forms large, sticky clumps (if too wet) or fails to granulate (if too dry). Regular turning and tossing, combined with aeration at the tank bottom, allow for precise control of the material's moisture content within the optimal granulation range. 3.The Dual Benefits of Fineness and Adhesiveness Thorough turning ensures repeated shearing of fibers, resulting in consistent output fineness. Well-decomposed organic matter exhibits good plasticity, making it easier to form dense granules and simultaneously improving both the pelletization rate and granule strength. Conversely, if fibers remain coarse and clump together, the rate of material recycling (rework) skyrockets. 4.A Stable Front End Ensures a Smooth Back End The compost turner acts as the "material preparer," while the disc granulator acts as the "shaper." Inconsistent material preparation inevitably leads to issues in the shaping process. Only through regular turning, temperature monitoring, and moisture control can the disc granulator consistently produce round, uniform granules.