The crusher capacities given by manufacturers are typically in tons of 2,000 lbs. and are based on crushing limestone weighing loose about 2,700 lbs. per yard3 and having a specific gravity of 2.6. Wet, sticky and extremely hard or tough feeds will tend to reduce crusher capacities.
Selectiingwhat size a crusher needs to be is based on factors such as the F80 size of the rocks to be crushed, the production rate, and the P80 desired product output size. Primary crushers with crush run-of-mine rock from blast product size to what can be carried by the discharge conveyor or fit/math the downstream process.A typical example of primary crushing is reducing top-size from 900 to 200 mm.
Ultimately, the mining sequence will certainly impact the primary crusher selection. Where you will mine ore and where from, is a deciding factor not so much for picking between a jaw or gyratory crusher but its mobility level.
The mom and dad of primary crushers are jaw and gyratory crushers. In open-pit mines where high tonnage is required, thegyratory crushers are typically the choice as jaw crushers will not crush over 500 TPH with great ease. There are exceptions like MPI Mineral Park in AZ where 50,000 TPD was processed via 2 early century vintage jaw crushers of a:
The rated capacity at 5 closed-side setting was 490 stph based on standard 100lbs/ft3 feed material. These crushers were fed a very fine ore over a 4 grizzly which allowed the 1000 TPH the SAG mills needed.
In under-ground crushing plants where the diameter of the mine-shaft a skip forces limits on rock size, a jaw crusher will be the machine of choice. Again, if crushing on surface, both styles of stone crushing machines should be evaluated.
FABO MCK 115 is a mobile type & closed circuit crushing and screening plant that is used for processing of hard materials such as basalt, granite, dolomite etc. and other types of hard stones. MCK 115 includes two stages of crushing process which is made by primary jaw crusher and secondary cone crusher.
Thanks to the compacted design of MCK 115, all necessary equipment of a crushing and screening plant such as a vibrating feeder, a primary jaw crusher, a cone crusher, vibrating screens, belt conveyors, automation system, electric generator etc. are assembled on two units mobile chassis and thus the plant can be transported by only two truck heads. Thanks to its hydraulic system chassis, MCK 115 mobile crusher offers easy and rapid installation & usage to its users.