Dec 13, 2017· A 1–1/2 Rock size with a 6:1 reduction ratio will give you a 1/2″ final product from the secondary cone crusher. A jaw crusher is almost always a Primary crusher and will crush rock from around 24″ down to 6″. Depending upon the machine size. .
Cone Crushers are used for crushing quarried materials, sand, gravel etc. Essentially there are two stages in Cone Crusher Long Head (feed size of aggregate upto 330 mm) and Short Head Cones (recommended feed size of aggregate upto 230mm).