矿山设备指南：What Equipment Should You Use for Construction Waste Processing and Primary/Medium-Fine Crushing in Mines? A Complete Guide to C Series Counterattack Crushers

The C series impact crushers can switch between coarse crushing and medium-fine crushing, serving dual purposes in one machine. They are suitable for various materials with a compressive strength not exceeding 350 MPa (granite, limestone, concrete, etc.) to perform coarse, medium, and fine crushing operations. They are widely used in mining, construction, chemical, power, and metallurgical industries. The core advantages of this series are: by adjusting the installation position of the impact frame, it can switch between coarse and medium-fine crushing, serving dual purposes; a larger feed opening allows it to be used for primary crushing with a maximum feed size of up to 1000 mm; when crushing construction waste, it can effectively prevent steel rebar entanglement. Compared with traditional impact crushers, the C series has optimized structural design and operational convenience, making it an ideal choice for manufactured sand, aggregate production, and the resource utilization of construction waste.

Why choose the C series impact crusher? First, it serves dual purposes, allowing free conversion between coarse and medium-fine crushing, reducing equipment investment costs. Second, it has a large feed opening, accommodating feed sizes up to 1000 mm, suitable for coarse crushing of large materials. Third, it prevents steel rebar entanglement, effectively avoiding rotor entanglement, equipment damage, and downtime during construction waste processing. Fourth, it has high compressive strength, capable of handling various materials below 350 MPa, making it widely applicable. Fifth, it produces well-shaped finished products; the unique impact crushing principle of impact crushers results in cubic products with reasonable gradation.

The C series impact crusher is primarily used for coarse and medium-fine crushing in mining operations, construction waste treatment and construction waste crushing, material crushing in industries such as building materials, chemical, electric power, and metallurgy, coarse and medium-fine crushing in sand and aggregate production lines, and stone processing for road, bridge, and water conservancy projects. The people who need this equipment include mining enterprises, construction waste treatment companies, sand and aggregate producers, road and bridge project construction units, equipment procurement departments of chemical, electric power, and metallurgical enterprises, EPC contractors for crushing and screening production lines, equipment dealers and stockists, and overseas mining and building material project buyers. In what situations should one choose or replace the C series impact crusher? When coarse crushing in mining requires equipment with a high crushing ratio and high reliability; when construction waste treatment requires equipment that prevents steel reinforcement entanglement, serves dual purposes, and has a large feed opening; when the old impact crusher's hammer wears severely, processing capacity is insufficient, or product particle shape does not meet standards; when a new production line needs to be equipped with coarse or medium-fine crushing equipment. How to choose the C series impact crusher? Step one: confirm the material's compressive strength (≤350MPa); step two: confirm the crushing stage, choosing between coarse or medium-fine crushing mode; step three: confirm the feed opening size and maximum feed edge length; step four: confirm processing capacity; step five: confirm motor power; step six: confirm installation foundation; step seven: confirm the material of wear parts; step eight: confirm environmental protection and automation configuration.

C series impact crusher models and parameter table

Model	Feed opening size (mm)	Maximum feed edge length (mm)	Processing capacity (t/h)	Power (kW)	Weight (kg)
LF150	820×980	100-200	100-200	90-200	12000
LF250	960×1360	200-400	180-250	200-400	17000
LF350	1050×1700	300-500	300-500	200-400	24000

General technical parameter table

Parameter	Specification
Series	C series
Type	Impact crusher
Applicable material compressive strength	≤350MPa
Feed opening size	820×980–1050×1700mm
Maximum feed edge length	100-500 mm (maximum feed up to 1000 mm in coarse crushing mode)
Processing capacity	100-500t/h
Motor power	90-400kW
Weight	12-24t
Crushing stage	Coarse, Medium, Fine Crushing (Two-in-One Machine)
Core Advantages	Two-in-one machine, large feed inlet, prevents rebar entanglement, good final product shape
Applicable Industries	Mining, construction, chemical, power, metallurgy, etc.

Dimension Diagram and Key Dimensions

`[Image: /images/c-series-counterattack-crusher-dimension-drawing.webp]`

Material Table

Component	Standard Material	Optional Material	Description
Frame/Housing	High-strength cast steel/welded carbon steel	Wear-resistant steel plate	Bears crushing reaction force, requires high rigidity
Hammer Plate	High-chrome alloy	High-manganese steel, martensitic steel	Core wear part, highly wear-resistant
Impact Plate/Liner	High-manganese steel (ZGMn13)	High-chrome cast iron, alloy steel	Bears high-speed impact, extends service life
Rotor	40Cr/42CrMo forgings	Cast steel	Quenched and tempered, withstands huge torque
Bearing	Self-aligning roller bearing	Double-row cylindrical roller bearing	Bears heavy load and impact
Impact Frame	Cast steel	Welded structural parts	Adjust discharge gap to achieve coarse, medium, and fine crushing transformation
Motor	Full copper coil motor	Explosion-proof motor	Standard three-phase asynchronous motor
Control Box	Carbon Steel/Stainless Steel	Rainproof and Dustproof Type	Optional Variable Frequency Speed Regulation

Installation Method

The C series impact crusher must be installed on a solid concrete foundation, which should bear the equipment's own weight and the huge impact load during crushing operations; during installation, ensure the foundation level meets the requirements, and anchor bolts should be tightened according to torque specifications; after the equipment is in place, adjust the level to ensure the rotor is parallel to the motor shaft; the motor and crusher are connected via V-belt or direct drive, and belt tension or alignment should be adjusted to ensure smooth transmission; the impact frame adjustment mechanism should be flexibly debugged to ensure the discharge gap meets the finished particle size requirements, and verify the functionality of switching between coarse and medium-fine crushing modes; after installation, perform a no-load test run to check if the rotor rotates smoothly, with no abnormal vibration or noise, and confirm the gap between the hammers and impact plates is uniform; during the load test run, gradually increase the feed rate, observe the crushing effect and motor current, and ensure it does not exceed the rated current; when crushing construction waste, check in advance whether the anti-rebar entanglement device works effectively; a dust removal system should be equipped to reduce dust pollution; a central control system can be equipped for online monitoring and automatic control.

Application Scenario Table

Industry	Application	Recommended Configuration	Key Requirements
Mining	Coarse and medium-fine crushing operations	LF150–LF350	High crushing ratio, high reliability, wear-resistant
Construction Waste Processing	Crushing construction waste, anti-rebar entanglement	LF250–LF350	Dual-purpose machine, anti-rebar entanglement
Sand and Gravel Plant	Coarse and medium-fine crushing for aggregate production line	LF150–LF350	High output, good particle shape
Building Materials Industry	Limestone and concrete crushing	LF150–LF250	High crushing ratio, cubic particle shape
Chemical and Power Industry	Raw material crushing	LF150–LF250	Reliable, easy to maintain
Highway and Railway	Stone crushing, roadbed construction	LF250–LF350	High Capacity, High Reliability

Note

The C series impact crusher is suitable for materials with a compressive strength not exceeding 350MPa and can achieve both coarse and medium-fine crushing, serving dual purposes with one machine. In coarse crushing mode, the maximum feed size can reach 1000mm, effectively preventing rebar entanglement when crushing construction waste. For explosive environments, an explosion-proof motor must be selected. For materials with high abrasiveness, it is recommended to use high-chromium alloy hammers or high-manganese steel impact plates.

## Technical FAQ

1. What is the C series impact crusher?

The C series impact crusher is a crushing equipment that can achieve both coarse and medium-fine crushing, serving dual purposes with one machine. It is suitable for various materials with compressive strength not exceeding 350 MPa (granite, limestone, concrete, etc.) and is widely used in mining, construction, chemical, power, and metallurgical industries.

2. What is the working principle of the C series impact crusher?

The high-speed rotating hammers on the rotor strike the material, causing it to be thrown at high speed along the hammer’s tangent toward the impact plate for secondary crushing. The material rebounds from the impact plate back to the hammer action zone for re-crushing. The material is repeatedly impacted, collided, and rubbed between the hammers and impact plate until crushed.

3. What models are available in the C series impact crusher?

The C series impact crusher models include LF150, LF250, and LF350.

4. What is the processing capacity of the C series impact crusher?

The processing capacity ranges from 100-500t/h, depending on the model. LF150 is 100-200t/h, LF350 is 300-500t/h.

5. What is the motor power of the C series impact crusher?

Motor power ranges from 90-400kW, varying by model. LF150 is 90-200kW, LF250 and LF350 are 200-400kW.

6. What is the maximum feed size of the C series impact crusher?

Maximum feed size ranges from 100-500mm. In coarse crushing mode, it can reach up to 1000mm.

7. How does the C series impact crusher achieve dual-purpose use?

By adjusting the installation position of the impact frame, it is possible to switch between coarse and medium-fine crushing, making the machine dual-purpose.

8. Can the C-series impact crusher handle construction waste?

Yes, when crushing construction waste, it can effectively prevent rebar entanglement and is suitable for urban construction waste processing.

9. What are the wear parts of the C-series impact crusher?

Hammer, impact plate, liner, etc. Among them, the hammer is the core wear part, and it is recommended to use high-chrome alloy or high-manganese steel.

10. Does the C-series impact crusher need a foundation?

Yes. It must be installed on a solid concrete foundation that can support the equipment's weight and withstand the huge impact load during crushing operations, with anchor bolts for fixation.

11. What are the common faults of the C-series impact crusher?

Hammer wear or breakage (due to overly hard material or overload), impact plate wear (due to highly abrasive material), bearing overheating (poor lubrication or overload), rotor imbalance (uneven hammer wear or foreign object blockage), and discharge port blockage (uneven feeding or too small discharge port).

12. What is the difference between the C-series impact crusher and a traditional impact crusher?

The C-series can switch between coarse and medium-fine crushing, making it dual-purpose. It has a larger feed opening, with a maximum feed size of 1000mm for coarse crushing, and it can effectively prevent rebar entanglement when crushing construction waste.

13. Can the C-series impact crusher be customized?

Yes, motor power, hammer material (high-chrome alloy/high-manganese steel/martensitic steel), motor configuration (explosion-proof motor), dust removal system, central control system, and variable frequency speed regulation can be customized.

14. Does the C-series impact crusher comply with RoHS and REACH?

Standard equipment complies with RoHS and REACH regulations and does not contain SVHC (Substances of Very High Concern). Please refer to the product test report for details.

15. How to maintain the C-series impact crusher?

Regularly check the wear condition of the plate hammer, and replace or adjust it in time; regularly check the wear condition of the impact plate and liner; regularly check the bearing lubrication, and add or replace grease; regularly check the belt tension; regularly check whether the foundation bolts and connecting bolts are loose; regularly clean the accumulation and foreign objects in the crushing chamber.

16. How to select the model of the C-series impact crusher?

Determine suitability according to the compressive strength of the material (≤350MPa), choose coarse or medium-fine crushing mode according to the crushing stage, select the corresponding model according to the feed opening size and maximum feed length, choose a model within the 100-500 t/h range according to the production line capacity requirements, and select a 90-400 kW motor according to the handling capacity and material hardness.

Technical FAQ

What data should I send for a crusher quotation?

Provide material type, maximum feed size, capacity, required product size, moisture, working hours and the upstream and downstream equipment.

How do I compare two crusher models?

Compare the same duty point: capacity, feed opening, discharge range, motor power, wear-part life, maintenance access and total operating cost.

Authoritative references

For standards and safety context, see ISO standards and the U.S. Mine Safety and Health Administration. Confirm the exact local requirements for your project.

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