Flat die pelleting machines, utilizing the mechanical force of “die extrusion,” can process a variety of raw materials with diverse properties, finding wide application in biomass, organic fertilizer, chemical, and feed industries.

1.Biomass: Wood chips, rice husks, and straw are typical processing materials. These materials are loose and have low bulk density. After being crushed, they enter the flat die, where the lignin softens under high pressure, becoming a natural binder that tightly interweaves the fibers. The resulting pellets are dense, with increased calorific value, making them ideal for biomass fuel production.

2.Organic Fertilizer: Well-rotted livestock and poultry manure has a moisture content of approximately 30%, making it sticky and non-flowing. Flat die pelleting machine excels at processing this type of material: the fibers in the well-rotted material act as a skeleton, while the organic matter acts as a binder. After extrusion, the pellets are smooth and require no external binder. The finished product has good slow-release properties, completely solving the dust problem associated with powder fertilizer application.

3.Chemical: Materials such as ammonium bicarbonate and ammonium chloride are prone to decomposition when heated or absorb moisture and clump, making them unsuitable for wet granulation. Flat die dry extrusion relies on intermolecular forces for forming, requiring no heating or water addition throughout the process, maintaining stable chemical composition, and meeting general blending or packaging needs.

4.Feed Products: Roughage such as grass meal and cottonseed hulls are bulky and low-density, resulting in high transportation costs. Flat die pelleting machine reduces their volume by two-thirds. The instantaneous high temperature during extrusion gelatinizes starch and softens crude fibers, improving animal digestibility. Small and medium-sized farms often use this method to make their own pelleted feed, flexibly adjusting formulations.