Most of the clients use Jaw Crusher as primary Rock Crusher, since rock jaw crusher available in market can take feed size upto 600mm, which is added benefit to the clients as it saves time and move.
But to be remembered, the rock jaw crushers can take feed size upto 600mm give output production of 150mm. In this case, if clients require the production to be of size 00mm to 40mm 0r 65mm, then secondary crusher is required.
The ideal secondary crusher can be another jaw crusher and cone crusher. Rock jaw crusher will always gives production of aggregate which is flaky and most of the concrete or construction workrejects flaky material.
In the case, if the aggregate is required for RMC / concrete work in construction, then portable mobile cone crusher will be the best choice as secondary crusher.
If more spherical production to be guaranteed, then the another option is the third stage crusher and its Vertical Shaft Impactor (VSI).