The Compaction Process
Compaction is a process a bit different from briquetting which will include the next steps of crushing and screening.
Compaction
The powdery material is pre-compressed and degassed by the screw feeder, and is quantitatively and evenly added between the two rollers of the compactor. After being squeezed between the rollers, the pressed material falls off from the pocket under the action of elasticity and gravity, forming a dense, hard strip of flake or briquette. During the compaction process, the pressure on the material gradually increases, when the gap between the two shafts is at the smallest position, the pressure on the material is maximum, and then gradually decreases until it reaches 0. The apparent density of the material can increase by 1.5 to 3 times on compaction.
Crushing
The crushing work will be carried out by the flake breaker under the roller compactor, where the flakes are pre-broken or broken into small granules. Thin granules are easier to transport and are easily further broken by subsequent crushers when needed.
In the crushing process, the softer parts of the flakes are broken into high-strength and wear-resistant particles. These products will not be ground during transportation and use.
Screening
The crushed granules are divided into oversized granules, product granules and fine granules on a multi-stage screen. The fine granules on the lowest screen are recycled into the compactor and then compacted again. The oversized particles retained in the upper layer of the multi-stage screen need to be further crushed. After crushing it returns to screening.
Proper selection of crushing and screening equipment is crucial to the economy of the compacting system. The shape of the granules, the size range of the granules (typically 1 to 5 mm or 2 to 4 mm), and the amount of circulation after crushing and screening determine the output and capacity of the compacting system.
Other related process (optional)
Feeding, handling, mixing, polishing, coating, packing, dust collecting, etc.
Benefit of using a compaction process
- The materials are compressed into flakes under mechanical pressure, no need wetting agents, ensuring product purity.
- The process is brief, energy-efficient, and high-yielding.
- Dry powder is directly granulated, eliminating the need for subsequent drying processes, facilitating integration and transformation within existing production processes.
- The resulting granules exhibit high strength and significantly improved bulk density compared to other granulation ways.
- Flexible in operation, with a wide range of applicability, and the compacting pressure can be adjusted via hydraulic.
- Closed-loop system enables continuous production with efficient operation.
LiFePO4 Lithium Iron 
Snowmelt Salt 
KCl Sodium Chloride 
SOP Potassium Sulfate 
