Compaction Fertilizer Production Line
A specialized dry granulation solution for producing high-density, dust-free, and highly soluble fertilizer granules without the use of heat or liquid binders. Our compaction lines are ideal for premium fertilizers like water-soluble formulations, micronutrient blends, and heat-sensitive materials, offering unmatched flexibility and energy efficiency.
Compaction Fertilizer Production Line Equipment List
Raw Material Pre-Blender
Feed Hopper & Pre-Conditioner
Compaction Unit (Core Machine)
Pre-Breaker / Flake Crusher
Granulation Mill
Multi-Deck Vibrating Screen
Recycling System
Polishing Drum (Optional)
Packaging System
Dust Collection Unit
Compaction Fertilizer Production Line Technical Parameters
Parameter | Value / Description |
Capacity | 1–10 tons per hour (for premium/specialty fertilizers) |
Roller Pressure | Adjustable, 20 – 150 MPa (configurable based on material) |
Final Granule Density | High (1.2 – 1.5 g/cm³) |
Granule Shape | Irregular, angular, or semi-rounded (after polishing) |
Particle Size Range | 0.5 – 6 mm (customizable via screens) |
Solubility (For WSF) | Very High (≥ 95% in cold water) |
Process Temperature | Ambient to Slightly Elevated (due to pressure, no external heat) |
Automation Level | Basic to Medium (Focus on pressure & feed rate control) |
Key Feature | Dry Process – No drying or cooling stage required. |
Raw Mterials For Compaction Fertilizer Production Line
Key Requirement: All materials must be in a fine, dry powder form (typically 80-200 mesh) to ensure proper compaction and granule strength.
Compaction Fertilizer Production Process
All raw material powders are accurately weighed according to the specific formula and fed into a dry powder mixer. They are blended for 5-10 minutes until a perfectly homogeneous mixture is achieved. This uniformity is critical for consistent nutrient content in every granule.
The homogeneous powder blend is transferred via a controlled feeder (screw or vibratory) into the feed hopper of the double roller compactor. The feeder ensures a constant and even flow of material into the compaction zone, which is vital for stable operation.
The powder is gravity-fed into the gap between two counter-rotating, heavy-duty rollers. These rollers, driven by a high-pressure hydraulic or mechanical system, exert immense pressure (20-150+ MPa) on the powder.
Under this pressure, the particles are forced together through a combination of van der Waals forces and mechanical interlocking, forming a solid, dense sheet or large, fragile flakes (called "briquettes" or "cake") without the need for any liquid binder or heat application.
The compacted sheet or large flakes discharge from the compactor and immediately enter a primary crusher. This machine, often a gentle hammer mill or toothed roller crusher, breaks the brittle compacted mass into smaller, more manageable chips (typically 5-20mm in size).
The chips are fed into a granulation mill. This mill (e.g., an oscillating granulator with a screen) further reduces the chips by breaking them along natural fault lines, producing the final granular product in a relatively narrow size distribution.
The granules are conveyed to a multi-deck vibrating screen for classification:
On-Spec Granules (e.g., 1-3.5mm) are sent to the next stage.
Oversize Granules are diverted to a small crusher and reduced to fines.
Fines (undersize particles) from both the screen and the crusher are automatically conveyed back to the main compactor feed hopper.
This closed-loop recycling system ensures a very high overall yield (often >95%) and a dust-free operation.
The on-spec granules may pass through a light polishing drum to smooth sharp edges, improving flowability and aesthetic appeal. For water-soluble fertilizers, no coating is applied.
The finished, high-density granules are transferred to an automated packaging line and sealed in moisture-proof bags to protect their quality and solubility.
Compaction Fertilizer Production Line
Advantages
Ideal for Premium & Heat-Sensitive Formulations
The completely dry and low-temperature process perfectly preserves the chemical integrity of sensitive materials like urea, ammonium nitrate, and chelated micronutrients. It is the preferred method for manufacturing high-quality water-soluble fertilizers (WSF) and specialty blends without degradation.
Exceptional Formulation & Product Flexibility
Switch between different fertilizer formulas (NPK blends, CN, KNO3, WSF) in minutes by simply changing the powder mix. The same line can produce both agricultural-grade granules and dense, soluble prills for fertigation/hydroponics.
Significant Energy & Operational Savings
Eliminates the most energy-intensive stages of traditional wet granulation: no drying oven and no cooling drum. This reduces energy consumption by up to 60-70%, dramatically lowering production costs and carbon footprint.
Superior Product Characteristics
Produces granules with very high bulk density and crushing strength, reducing packaging and transport volume. The irregular shape improves soil adhesion. The process inherently creates granules with excellent solubility due to the absence of heat-induced crusts or melt-based coatings.
Simple, Robust & Low-Maintenance Operation
With fewer moving parts and no high-temperature zones or liquid binders, the compaction line is inherently easier to operate and maintain. It offers high uptime, lower labor costs, and minimal risk of process-related shutdowns (e.g., no nozzle clogging, no dryer scorching).