Concasseur à mâchoires VS concasseur à percussion

When planning a mining or construction project, selecting the right rock crushing equipment can significantly impact your operational efficiency and bottom line. Among the various options available, jaw crushers and impact crushers stand out as two of the most commonly used solutions – but they serve distinctly different purposes. Understanding their differences will help you make an informed decision that matches your specific production needs.

 

 

Jaw Crusher VS Impact Crusher: 7 Key Differences You Should Know

 

1. Application Differences

Jaw crushers are mainly used as primary crushers, it can crush hard material, such as granite and basalt.
An impact crusher is usually used as a medium-fine hardness crusher, such as limestone and concrete, and it has good crushing efficiency for some brittle materials. It mainly crushes the small material discharged from the jaw crusher.
En général, les concasseurs à mâchoires sont placés avant le concasseur à percussion.

 

2. Capacity Comparison

A concasseur à mâchoires can crush various materials with compressive strength below 320MPa, particle size between 125mm and 750mm, and capacity up to 500 TPH. Most jaw crusher manufacturers provide a complete range of primary jaw crushers and secondary crushers.
Concasseur à percussion suitable for coarse – medium crushing the various soft and medium hard ores whose particle size does not exceed 500mm, compressive strength less than 50MPa. Output up to 450 TPH. The final discharge size can be adjusted to meet different requirements.

 

3. Output Characteristics: Granularity and Shape

Jaw crusher crushes the materials by squeezing action; therefore, the finished product has more needle flake, and its particle size is generally 10-350mm.
But an impact crusher uses impact action to reduce the material size; its finished products are mostly cubes with less needle-like material, finer output particles, and better quality.

 

4. Working Principle

Concasseur à mâchoires

Le moteur entraîne la courroie et la poulie pour faire monter et descendre la mâchoire par l'intermédiaire d'un arbre excentrique. Lorsque la mâchoire mobile se lève, l'angle entre la plaque à genouillère et la mâchoire mobile augmente, ce qui rapproche la plaque de la mâchoire mobile de la plaque de la mâchoire fixe. En même temps, les matériaux sont broyés ou fendus pour atteindre l'objectif du broyage. Lorsque la mâchoire mobile descend, l'angle entre la plaque à genouillère et la mâchoire mobile diminue. La plaque de la mâchoire mobile quitte la plaque de la mâchoire fixe sous l'action de la barre de traction et du ressort, et le matériau brisé est évacué par l'ouverture inférieure de la chambre de broyage. Grâce à la rotation continue du moteur, la mâchoire motorisée est utilisée pour le mouvement périodique de concassage et d'évacuation des matériaux, réalisant ainsi une production continue.

 

Concasseur à percussion

Entraîné par le moteur, le rotor tourne à grande vitesse, le matériau et le marteau sur le rotor s'entrechoquent et se brisent, puis sont projetés sur le dispositif de contre-attaque pour être à nouveau brisés. Ce processus est répété jusqu'à ce que le matériau soit brisé à la taille de particule requise et évacué par la sortie.

 

 

5. Selection Considerations

Due to the limitation of its own crushing effect, although the size of the ore material crushed by the jaw crusher is uniform, the overall particle size is relatively large, so for users with higher product quality, when purchasing this equipment, Need to consider adding some additional secondary crushers.

The impact crusher has a large crushing force, and it also has the effect of stone shaping. Therefore, the ore materials processed by it are mostly cubes, and the gradation is reasonable, which can fully meet the current strict crushing stone production requirements.

In brief, in the most crushing plants, these two crushers are often used in close combination.

 

 

6. Cost Analysis

Which is better, a jaw crusher or an impact crusher? According to the market sales situation, the overall sales of jaw crushers are more than those of impact crushers, mainly due to their versatility and flexibility. It can not only be used as crushing equipment alone, but also can be combined with other machines in various production lines. It is a cost-effective one among all crushing equipment.
Le prix d'un concasseur à mâchoires varie généralement de quelques dizaines de milliers à quelques centaines de milliers (RMB chinois). Le prix spécifique peut être consulté par le fabricant.

 

7. Performance Advantages

Concasseur à mâchoires

Deep crushing cavity, which improves the feeding capacity and output; large crushing ratio, uniform product size; reliable and convenient gasket-type discharge opening adjustment device, big adjustment range, increasing the flexibility of the equipment; simple structure, reliable work, less operating costs, energy saving. A single machine can save energy by 15% ~ 30%; the system can save energy more than double; the adjustment range of the discharge port can meet the requirements of different users; low noise and less dust.

Concasseur à percussion

Le jeu entre la plaque d'impact et le marteau peut être facilement réglé, ce qui permet de contrôler efficacement la taille des particules déchargées, et la forme des particules déchargées est bonne ; la structure est compacte, la machine est rigide, et le rotor a un grand moment d'inertie ; le marteau à plaque à haute teneur en chrome a une grande résistance aux chocs, une grande résistance à l'usure et un grand impact.

 

Conclusion

Both jaw and impact crushers bring unique advantages to material processing operations. Your ideal choice depends on your material characteristics, production requirements, and quality expectations. While jaw crushers make excellent primary workhorses for hard materials, impact crushers shine in secondary roles, producing superior-shaped aggregates. Many successful operations strategically combine both technologies to maximize efficiency and output quality.

For optimal results, consult with equipment manufacturers to analyze your specific material properties and production goals. The right crushing solution can significantly impact your operational costs, output quality, and ultimately, your project’s profitability.

 

Plus d'informations peuvent vous intéresser：

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