Relying on a structure where dual cages impact each other in counter-rotation to crush material, the cage crusher has become a mainstream fine-crushing machine for compound fertilizer and organic fertilizer processing lines. Characterized by a compact design, high crushing efficiency, and excellent sealing performance, it is widely used across various industries, including mining, construction materials, chemicals, fertilizers, animal feed, food processing, and pharmaceuticals.
The primary mechanical components of a cage crusher include the frame, casing, large and small cage rotor assemblies, feed hopper, drive system (motor, pulleys, belts, etc.), main shaft, and bearing support structures. Its core working components consist of inner and outer sets of cage bars—typically welded from multiple steel bars to form a dense "cage-tooth"structure.
The equipment features a horizontal layout with two counter-rotating cage rotors arranged in parallel. Some models are also equipped with a spiral feeding sleeve; material is conveyed axially by the screw, undergoing preliminary crushing before entering the fine-crushing zone formed by the inner and outer cage bars. This design results in a simple, compact structure with a small footprint, facilitating easy cleaning and maintenance.
NPK compound fertilizer production lines: breaking up fertilizer clumps and pre-crushing raw materials.
Organic fertilizer production lines: fine crushing of hardened material clumps following the fermentation process.
Processing raw materials for humic acid fertilizers and water-soluble fertilizers.
Preparation of powdered raw materials for small and medium-sized compound fertilizer plants.
In a standard organic fertilizer production process, raw materials undergo thorough fermentation and decomposition via a trough-type compost turner; large material clumps are first fed into a cage crusher for size reduction. The resulting crushed material—meeting required specifications——is conveyed to the mixing section, where ingredients are blended before entering the granulation system. If the raw materials have high fiber content or significant moisture fluctuations, please consult the engineers at Huaqiang Heavy Industry to determine the optimal crushing equipment configuration.
Featuring a simple structure, the cage crusher utilizes inner and outer cage bars rotating at high speeds in opposite directions to repeatedly impact and shatter the material, resulting in high crushing efficiency and a high reduction ratio.
The equipment offers superior sealing, minimizing dust leakage during operation, and runs smoothly and reliably.
The crusher has lenient requirements regarding raw material moisture content; generally, levels up to 12% do not affect crushing efficiency. Certain models can crush various single-nutrient fertilizers with moisture content below 6%.
The equipment features a simple, compact design that facilitates cleaning and maintenance, while also ensuring a low failure rate.
The equipment effectively crushes, grinds, and pulverizes a variety of abrasive and non-abrasive materials, including those that are wet or sticky.
When selecting a cage crusher, focus on the following key aspects:
Material characteristics. Cage crushers are primarily suitable for dry materials with a moisture content of ≤15%, such as dry coal gangue, gypsum, limestone, and fertilizer granules. If processing wet materials, verify whether the specific model supports such operations.
Production capacity requirements. Small models offer an hourly output of 1-4 tons, suitable for laboratories and small processing facilities; medium models produce 4-10 tons per hour, suitable for small-to-medium compound fertilizer plants and brick factories; large models produce 10–15 tons per hour, suitable for large-scale production bases.
Output particle size. Consider the adjustable range of the output particle size to meet various production needs. Cage crushers produce a high proportion of fine particles (≤0.2mm), which is beneficial for downstream processes such as brick molding.
Manufacturer services. Prioritize manufacturers that offer comprehensive after-sales support to ensure reliable equipment installation, commissioning, and ongoing maintenance.
| Model | Rotate speed | Power | Prod Capacity | Overall Dimensions L×W×H | Weight |
| mm | r/min | kw | t/h | mm | kg |
| WLF650 | 2000 | 26 | 4-6 | 1800×1300×1160 | 2300 |
| WLF800 | 2000 | 37 | 6-10 | 2200×1500×1360 | 2550 |
