Ring die granulators are widely used for granulation in industries like organic fertilizer and biomass energy. However, different materials vary in suitability. Choosing the right material boosts efficiency and extends the ring die granulator’s life.
1.Organic fertilizer materials
Livestock manure: Chicken, cow, or pig manure can be pelletized into organic fertilizer after fermentation.
Agricultural waste: Materials like straw, rice husks, or mushroom residue can be crushed and mixed into bio-organic fertilizer.
Sludge-based fertilizers: Sewage sludge or biogas residue can be used for pelletizing after dehydration.
Humic acid fertilizers: Blends of humic acid with NPK nutrients make efficient organic-inorganic compound fertilizers.
2.Inorganic fertilizer materials
Compound fertilizers: Mixtures like nitrogen, phosphorus, and potassium (urea, MAP, KCl, etc.).
Single-nutrient fertilizers: Powdered fertilizers (like ammonium sulfate, potassium nitrate) turned into granules.
Micronutrient fertilizers: Materials containing zinc, iron, boron, etc., formed into uniform pellets.
3.Biomass energy materials
Wood pellets: Sawdust, wood shavings, or wood chips pressed into high-density fuel.
Straw pellets: Crop waste like corn or wheat stalks processed into clean energy pellets.
Other biomass: Peanut shells, palm shells, bagasse, etc., processed into fuel pellets.
The properties of different materials (moisture content, viscosity, fiber content) will affect the granulation effect of the ring die granulator. It’s crucial to select the right ring die (compression ratio, hole size).And adjust process parameters (temperature, pressure).