Crushing Equipment

A: When choosing equipment, you need to consider the material hardness, particle size, humidity and composition. For high hardness materials, we should try jaw crushing for coarse crushing first, and then use cone crusher for fine crushing to cope with high strength by extrusion crushing. Medium hardness materials, impact crusher is suitable, impact crushing can get high quality granular products. Brittle materials, high-speed impact crushing with hammer crusher, humidity of more than 10% of the material, to avoid easy to plug the impact profiler, optional jaw crusher and with drying equipment. For viscous materials, choose roll crusher with anti-sticking design.

A: Maintenance is centered around “reducing wear and tear and ensuring operation”. Lubrication system maintenance is the core, regularly check the oil quantity and quality of bearings, gears and other parts, jaw crusher eccentric shaft bearings 8 hours to make up for a grease, cone crusher thin oil lubrication system once a month to change the filter element. Check the wear and tear of jaw plate, hammer head and other wearing parts every week, and the wear of tooth plate exceeds one-third of the original thickness to turn over or change in time. Keep the equipment clean, clean up the residual material in the crushing cavity to prevent rust and blockage; check the fastening bolts to prevent loosening; regularly calibrate the equipment level and verticality to ensure smoothness.

A: Once found clogging to immediately shut down and disconnect the power to prevent the deterioration of the fault. First clear the feed opening of large pieces of material or foreign objects, if necessary, crowbar or crane. If the blockage in the crushing chamber, remove the access door to manually clean up, check the liner, screen mesh deformation. Exclude the blockage to find the cause, feed fast then adjust the feeder parameters; high humidity of the material is fed before screening or drying; screen mesh hole is small then change the appropriate screen.

A: Common causes include rotor imbalance (uneven wear of hammer head, etc.), loose ground bolts, bad bearings or too hard materials. To solve the problem, stop the machine first, calibrate the foundation of the machine with a level meter, and tighten the foot bolts; dismantle the rotor parts, and replace the worn parts to restore the balance; check the temperature and clearance of the bearings, and replace the bearings and make up for the lubricating grease if there are strange noise or stagnation; if the materials are mixed into the super-hard materials (e.g. iron), add an iron remover or a grille at the feeding port.

A: Start from “reduce wear and tear” and “optimal use”. Pre-treatment and screening of materials to remove impurities, control the feed size does not exceed the maximum size of the equipment. Feed the cone crusher at 80% - 90% of the rated capacity. Choose high wear-resistant material wearing parts, regular turning or rotation. Keep the crushing chamber lubricated to reduce dry friction.