Mining Laboratory Double Roll Crusher for Coal, Ore and Mineral Samples
The SZΦ250 Laboratory Double Roll Crusher is a high-efficiency laboratory crushing machine developed for mineral sample preparation. It features two precision-machined alloy steel rollers that rotate in opposite directions to crush materials into uniform particle sizes.
The machine adopts a compact structure with an enclosed crushing chamber to reduce dust generation during operation. Its adjustable discharge gap allows users to control the final particle size according to laboratory testing requirements.
With stable performance, easy maintenance, and low operating noise, this crusher is widely used before grinding, flotation testing, chemical analysis, XRF/XRD analysis, and mineral processing research.
Key Features
- Uniform particle size distribution
- Adjustable discharge size (1-3 mm)
- Compact laboratory design
- Stable and continuous crushing performance
- Low vibration and low operating noise
- Easy operation and maintenance
- Durable steel structure
- Suitable for continuous laboratory use
- Ideal for sample preparation workflows
Applications
Suitable Materials
- Gold ore
- Copper ore
- Iron ore
- Lead-zinc ore
- Nickel ore
- Manganese ore
- Coal
- Limestone
- Quartz
- Rocks
- Metallurgical materials
- Geological samples
Industry Applications
- Mining laboratories
- Geological institutes
- Universities
- Metallurgical laboratories
- Coal laboratories
- Building material laboratories
- Research centers
- Quality inspection laboratories
Technical Specifications
| Model |
SZΦ250×75 |
SZΦ250×125 |
SZΦ250×150 |
| Feed Size |
≤13 mm |
≤13 mm |
≤13 mm |
| Discharge Size |
1-3 mm (Adjustable) |
1-3 mm (Adjustable) |
1-3 mm (Adjustable) |
| Roller Material |
Chromium Steel |
Chromium Steel |
Chromium Steel |
| Capacity |
300 kg/h |
450 kg/h |
600 kg/h |
| Motor Power |
1.5 kW |
3 kW |
3 kW |
| Voltage |
380V / 50Hz |
380V / 50Hz |
380V / 50Hz |
| Weight |
Approx. 310 kg |
Approx. 345 kg |
Approx. 356 kg |
| Overall Dimensions |
1180×550×1060 mm |
1180×550×1060 mm |
1180×550×1060 mm |
Safety Operation Instructions
To ensure safe operation and extend the service life of the equipment, please follow the safety instructions below.
- Qualified Operators: Only trained personnel should operate the machine. Operators must carefully read and understand the instruction manual before use.
- Never Service While Running: Do not adjust, clean, lubricate, or repair the machine while it is operating. Always switch off the power supply and wait until all moving parts have completely stopped before performing any maintenance.
- Proper Electrical Protection: The machine must be properly grounded. Electrical cables should be installed in insulated conduits. It is recommended to install a residual current device (RCD) or leakage protection device according to the operating environment.
- Overload Protection: To prevent motor overheating or equipment damage caused by overloading, an overcurrent protection device should be installed based on the operating frequency and the characteristics of the processed materials.
- Inspect Safety Devices: Before each operation, check that all electrical protection devices, safety guards, and protective covers are in good condition and functioning properly. Any potential hazards must be eliminated before starting the machine.
Key Advantages
- Excellent Particle Size Control: The adjustable roller gap provides consistent particle sizes for laboratory testing.
- High Crushing Efficiency: Opposite rotating rollers ensure efficient crushing while minimizing excessive fines.
- Durable Rollers: Manufactured from high manganese steel for excellent wear resistance and long service life.
- Laboratory-Friendly Design: Compact footprint saves laboratory space while maintaining high processing capacity.
- Low Maintenance: Simple mechanical structure allows quick cleaning and convenient roller replacement.
Packaging
- Export Wooden Case
- Moisture-proof Packaging
- Shock-resistant Protection
- Suitable for Sea Freight and Air Freight
Optional Accessories
- Laboratory Jaw Crusher
- Disc Pulverizer
- Sample Divider
- Vibrating Screen
- Drying Oven
- Dust Collection System
Frequently Asked Questions
What materials can this crusher process?
It is suitable for ores, rocks, coal, coke, limestone, quartz, and other medium-hard materials.
Can the output size be adjusted?
Yes. The discharge gap can be adjusted to obtain approximately 1-3 mm particle sizes.
Is the roller material wear-resistant?
Yes. The rollers are made of high manganese steel, providing excellent wear resistance and long service life.
Can the machine operate continuously?
Yes. It is designed for continuous laboratory sample preparation.
Can the voltage be customized?
Yes. Different voltages and frequencies are available upon request.
