Cone crushers are critical machines in the mining and aggregate industries, used for secondary and tertiary crushing of rocks and ores. To ensure optimal performance and longevity, operators must be aware of common issues, conduct thorough preparation steps, and adhere to strict safety precautions.
Common Problems during Operation
Blockage: Material that is too wet, sticky, or oversized can cause clogging in the crushing chamber, leading to stoppages and potential motor burnout.
Uneven Wear: Improper feed distribution leads to uneven wear on the manganese liners (mantle and concave), reducing efficiency and product quality.
Overheating: Failure in the lubrication system or lack of cooling can cause bearings to overheat, leading to catastrophic failure.
Abnormal Vibration: Loose components, unbalanced rotors, or foreign objects (metal) in the chamber can cause excessive vibration.
Seal Contamination: Dust or water ingress past the seals can contaminate the oil and destroy bearings and gears.
Preparation before Operation
Pre-Start Inspection: Check all bolts and fasteners for tightness. Visually inspect the wear parts; replace liners if they are too thin or cracked.
Lubrication System Check: Verify that the oil tank has the correct level and type of oil. Start the lube pump first and confirm pressure and return flow before starting the main motor.
Material Assessment: Ensure the feed material characteristics (size, hardness, moisture) are within the crusher’s design specifications.
Clear the Chamber: Make sure the crushing chamber is empty (no choked material) before starting.
Key Precautions & Tips
Startup Sequence: Always start the lubrication system first, then the crusher, and finally the feeder. The shutdown sequence is the reverse.
Choke Feeding: Maintain a consistent and full chamber (“choke feeding”) to ensure rock-on-rock crushing, which maximizes liner life and produces a cubical product.
Magnet Protection: Ensure a magnetic separator or metal detector is installed on the feed conveyor to prevent tramp metal from destroying the crusher internals.
Regular Maintenance: Strictly follow the manufacturer’s schedule for oil changes, filter replacements, and inspection of the main frame and adjustment ring.
Luoyang Dahua Heavy Industry is a high-tech enterprise with research & development production, sales, and service. The mobile crushing station has been successfully applied in domestic and foreign mine crushing projects. The company has a professional R & D team, a strong after-sales team, from the equipment selection, site inspection, equipment manufacturing, installation, commissioning, delivery and other aspects for your service.
