- (86) 18137197750
- manyijixie@outlook.com
- 18137197750
A Primary Impact Crusher is a heavy-duty machine used in the first stage of the crushing process. Its primary function is to reduce large, oversized feed material (such as quarry rock, demolition concrete, and natural stone) into smaller, more manageable cubical-shaped product. Unlike jaw crushers that use compression force, impact crushers utilize the principle of—as the name suggests—impact to break the material.
These robust crushers are characterized by a solid rotor and massive impact aprons (or breaker plates), enabling them to handle high feed sizes and volumes typical of primary crushing applications.
The working principle of a primary impact crusher is straightforward yet highly effective:
Feed Material: Large rocks or recycled concrete are fed into the crusher’s feed hopper.
High-Speed Impact: The material enters the crushing chamber and is struck by massive blow bars (hammers) fixed to a high-speed rotating rotor.
Primary Shattering: The immense kinetic energy from the rotor transfers to the rocks upon impact, causing them to shatter into smaller pieces.
Secondary Impact: The shattered pieces are hurled against the fixed impact aprons (breaker plates) lining the crushing chamber, where they undergo further breakage.
Adjustable Product Size: The gap between the rotor and the impact aprons can be adjusted, allowing for control over the final product’s size. Smaller gaps produce a finer output.
Discharge: The now crushed material exits the crusher through the bottom, ready for the next stage of processing.
Robust Construction: Built with heavy-duty components to withstand the constant impact and abrasion of large, hard feed material.
High Reduction Ratio: Capable of achieving significant size reduction in a single pass, often up to 20:1.
Cubical Product Shape: The impact-breaking action naturally produces a more uniform, cubical end product, which is highly desirable for concrete and asphalt applications.
Large Feed Opening: Designed to accept very large feed material, eliminating the need for a primary screen in many cases.
Adjustable Crushing Parameters: Features like hydraulic or mechanical adjustment of the aprons allow for easy control over product sizing.
Choosing a primary impact crusher over other types of primary crushers offers several distinct benefits:
Excellent Cubical Product: Superior in producing a well-shaped, cubical product compared to jaw crushers.
High Performance & Efficiency: High rotor speed and mass deliver high throughput and excellent reduction ratios.
Versatility in Application: Can effectively process a wide range of materials, from soft limestone to hard, abrasive stones, and even recycled materials.
Cost-Effective Operation: Often lower operational costs per ton due to high efficiency and lower wear costs compared to some alternatives, especially when processing less abrasive rock.
Simplicity of Maintenance: Many models feature hydraulic systems for easy opening of the crusher and replacement of wear parts like blow bars and aprons.
Primary Impact Crushers are highly versatile and can process a broad spectrum of materials, including:
Limestone
Dolomite
Sandstone
Gravel
Basalt
Granite
Reinforced Concrete
Asphalt
Demolition Waste
Aggregate and Quarrying: The primary industry for these machines, used to produce crushed stone for construction and road building.
Mining: For primary crushing of mined ores and minerals.
Cement Industry: Crushing limestone and other raw materials for cement production.
Recycling: Processing construction and demolition waste (C&D) for reuse as a valuable aggregate.
Here is an example of specifications for different models of primary impact crushers. Note: Specifications vary by manufacturer.
| Model | Rotor Diameter x Width (mm) | Feed Opening (mm) | Max. Feed Size (mm) | Capacity (t/h) | Drive Power (kW) |
|---|---|---|---|---|---|
| PIC-1010 | Ø1000 x 1000 | 1020 x 580 | 600 | 150 – 250 | 132 – 160 |
| PIC-1214 | Ø1250 x 1400 | 1450 x 800 | 800 | 250 – 400 | 200 – 250 |
| PIC-1620 | Ø1600 x 2000 | 2040 x 1600 | 1200 | 500 – 800 | 400 – 500 |
| PIC-2025 | Ø2000 x 2500 | 2500 x 2000 | 1500 | 900 – 1500 | 800 – 1000 |
We understand that every quarry and recycling site has unique requirements. We can customize our primary impact crushers to meet your specific needs. Customization options include:
Specific Rotor Design: Optimized for your material’s abrasiveness and hardness.
Wear Parts Configuration: Choice of blow bar metallurgy (e.g., high chrome, martensitic steel) and design to maximize service life.
Hydraulic Assistance: Systems for easy opening and adjustment to minimize downtime.
Drive Options: Various motor configurations to match your site’s power supply.
Feed Arrangement: Customized feed hoppers and chutes to integrate seamlessly with your existing setup.
Contact us today to discuss your primary crushing challenges. Our engineering team will work with you to design and deliver a primary impact crusher solution that maximizes your productivity and profitability.
