Product Overview
The Roll Press Organic Fertilizer Granulating Machine is a dry extrusion granulation equipment specifically engineered for organic fertilizer production, eliminating the need for energy-intensive drying processes. Operating at a pressure range of 8-12 MPa, it converts fermented organic materials—such as cow dung, chicken manure, and crop straw after composting—into uniform granules through high-pressure roller extrusion. This design makes it an ideal choice for small to medium fertilizer plants aiming to cut production costs and reduce carbon footprint, as it avoids the water evaporation steps required by wet granulation technologies. The machine’s compact structure also allows for easy integration into existing fertilizer production lines without major facility modifications.
Product Features
Flexible Granule Customization: Supports multiple granule shapes including pillow, semicircle, and cylindrical (with optional mold changes) based on specific market demands, such as retail packaging or bulk agricultural use.
Low Moisture Requirement: Adapts to raw materials with 20-30% moisture content, significantly reducing pre-processing costs associated with drying or humidifying materials. This flexibility also allows plants to handle seasonal variations in raw material moisture levels.
Durable Construction: Equipped with high-frequency quenched gears (surface hardness up to HRC 60) and wear-resistant roller sleeves made of high-chromium alloy steel, extending service life by 50% compared to standard carbon steel models. The roller gap can be adjusted manually or automatically to maintain granule consistency.
Energy Efficiency: Adopts a variable frequency motor (15-37 kW depending on model) that adjusts power output based on material feed rate, saving 15-20% electricity versus traditional fixed-speed granulators. An energy recovery system also captures excess heat from the extrusion process for auxiliary uses.
Applications
Organic fertilizer production from a wide range of organic wastes, including animal manure (cow, pig, poultry), crop straw (wheat, corn, rice), biogas residue, and food processing by-products (soybean meal, fruit pomace).
Small-scale compound fertilizer production lines requiring low moisture granules (≤15% final moisture) to prevent clumping during storage and transportation.
Regions with electricity supply constraints—such as rural areas in Southeast Asia and Africa—due to its low power consumption and ability to operate on unstable power grids with voltage regulators.
FAQ
Q: What’s the granulation rate of this machine?
A: The granulation rate reaches ≥90% when raw materials meet the 20-30% moisture requirement and particle size (≤3mm). For materials with higher fiber content (e.g., straw), adding 1-2% bentonite as a binder can maintain this rate.
Q: Do I need anchor bolts for installation?
A: No, the reinforced steel base (thickness ≥10mm) with shock-absorbing rubber pads ensures stable operation without anchor bolts, reducing installation time and costs. For mobile use, the machine can be mounted on a trailer.
Q: Can it process unfermented materials?
A: It’s recommended for fermented materials (to avoid unpleasant odors and ensure nutrient stability), but unfermented materials work if moisture is controlled below 30% and particle size is ≤5mm. However, unfermented materials may reduce roller life due to higher abrasiveness.
Q: How often should the roller sleeves be inspected?
A: Inspect roller sleeves every 200 working hours to check for wear. Minor wear (≤0.5mm) can be repaired by grinding; severe wear (＞1mm) requires replacement to maintain granule shape and size consistency.
