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Primary Crushing Equipment for Mining, Quarrying and Aggregate Production
A jaw crusher is a compression crushing machine commonly used for primary crushing.
Material enters the crushing chamber between a fixed jaw plate and a moving jaw plate. As the movable jaw repeatedly approaches and moves away from the fixed jaw, the material is compressed and broken into smaller particles.
Jaw crushers are widely used in mining, quarrying, aggregate production, infrastructure construction, and construction waste recycling because of their simple structure, strong crushing force, and ability to handle large feed sizes.
LIPU provides different jaw crusher series for coarse, medium, and fine crushing applications.
PE series jaw crushers are widely used as primary crushers in mining, quarrying, aggregate production, and construction material processing.
Typical features include:
PE jaw crushers are commonly installed at the first crushing stage to reduce large raw materials before secondary crushing.
PEV series jaw crushers are heavy-duty jaw crushers designed for higher-capacity crushing and demanding operating conditions.
Typical characteristics include:
PEV jaw crushers are often selected when higher capacity, larger feed size, or more efficient discharge adjustment is required.
PEX series jaw crushers are generally used for secondary or fine crushing.
Compared with standard primary jaw crushers, PEX models usually have a narrower and longer crushing chamber and are suitable for smaller feed sizes and finer discharge requirements.
Typical applications include:
The final jaw crusher type should be selected according to material characteristics, feed size, required capacity, and the downstream process.
LIPU jaw crushers can process a wide range of rocks, ores, and construction materials.
Typical materials include:
Typical applications include:
For highly abrasive hard rock, jaw crushers are commonly used as the primary crushing stage before a cone crusher.
For limestone and other medium-hard materials, the jaw crusher can work together with an Impact Crusher for secondary crushing.
The motor drives the eccentric shaft through the belt and pulley system.
As the eccentric shaft rotates, the movable jaw moves periodically toward and away from the fixed jaw.
When the movable jaw approaches the fixed jaw, material inside the crushing chamber is compressed and broken.
When the movable jaw moves away, the crushed material moves downward under gravity and is discharged through the bottom opening.
This crushing cycle continues continuously during operation.
The final discharge size is affected by:
A typical jaw crusher includes:
The jaw plates are the main wear parts and directly contact the material during crushing.
The toggle system transfers crushing force and also provides mechanical protection under abnormal operating conditions.
A jaw crusher is normally selected when the project requires strong primary crushing performance and the ability to handle large feed sizes.
It is particularly suitable when:
Jaw crushers are commonly used at the beginning of a crushing line because they can reduce large material into a suitable size for subsequent equipment.
For smaller feed sizes and finer crushing requirements, a PEX jaw crusher or another secondary crusher may be more suitable.
A jaw crusher usually works as part of a complete crushing and screening system.
A typical hard-rock crushing process may be arranged as:
Vibrating Feeder → Jaw Crusher → Cone Crusher → Vibrating Screen → Finished Aggregate
For medium-hard materials:
Vibrating Feeder → Jaw Crusher → Impact Crusher → Vibrating Screen → Finished Aggregate
For mineral processing:
Feeding → Jaw Crusher → Secondary Crushing → Screening → Ball Mill → Beneficiation
For construction waste recycling:
Feeding → Jaw Crusher → Impact Crusher → Magnetic Separation → Screening → Recycled Aggregate
A Belt Conveyor is normally used between different crushing and screening stages for material transfer.
For projects requiring frequent relocation, a Mobile Crushing Line can also be configured with mobile jaw crushing equipment.
LIPU jaw crushers are available in PE, PEV, and PEX series for different feed sizes, capacities, and crushing stages.
Actual processing capacity may vary according to material hardness, feed gradation, moisture content, discharge opening, operating conditions, and complete plant configuration.
Jaw crusher selection should consider the complete crushing process rather than only the nominal capacity.
For preliminary selection, please provide:
Important selection factors include:
Maximum Feed Size
The feed opening and maximum allowable feed size must match the largest raw material entering the crusher.
Required Capacity
Capacity should be evaluated together with feed gradation, material hardness, discharge opening, and operating conditions.
Discharge Size
The required discharge size determines whether a PE, PEV, or PEX model is more suitable and affects downstream crusher or grinding equipment selection.
Material Hardness and Abrasiveness
Hard and abrasive materials require suitable jaw plate material and a robust crusher configuration.
Primary or Secondary Crushing
PE and PEV crushers are generally selected for primary crushing, while PEX models are more commonly used for secondary or finer crushing.
Complete Crushing Circuit
The jaw crusher should be matched with feeding, secondary crushing, screening, conveying, and dust-control equipment.
LIPU Heavy Industry provides crushing, screening, grinding, classification, and mineral processing equipment for different mining and aggregate projects.
For jaw crusher applications, LIPU can assist with:
For complete crushing projects, jaw crusher selection can be integrated into the overall plant design rather than treated as an isolated machine.
What materials can a jaw crusher process?
Jaw crushers can process granite, basalt, limestone, quartz, pebble, iron ore, gold ore, copper ore, construction waste, concrete, and many other hard or medium-hard materials.
What is the difference between PE, PEV, and PEX jaw crushers?
PE is a conventional jaw crusher commonly used for primary crushing. PEV is a heavy-duty configuration designed for higher capacity and demanding applications. PEX is generally used for secondary or finer crushing with smaller feed sizes.
Is a jaw crusher suitable for hard rock?
Yes. Jaw crushers are widely used for hard and abrasive rock because they use compression crushing and have a robust mechanical structure.
What determines jaw crusher capacity?
Capacity depends on feed size, feed gradation, material hardness, discharge opening, moisture content, crushing chamber design, and operating conditions.
Can LIPU provide a complete jaw crushing plant?
Yes. LIPU can provide equipment matching for feeding, jaw crushing, secondary crushing, screening, conveying, and other supporting systems.
We provide a variety of mining and processing equipment, including feeders, rock crushers, grinders, classifying and screening machines, washing machines, gravity separators, flotation machines, magnetic separators, electric separators, dewatering equipment and laboratory mineral processing equipment.
