According to our experience, there are some suggestions:

1. If it is limestone, whose Moh's hardness is about 3, it is relatively soft, then we suggest to use impact crusher as secondary crusher instead of cone crusher. First, the impact crusher will be cheaper than cone crusher, and the shape of output product sizes are better, shapes are more regular, with less needle and pieces shape than cone crusher.

We offer two kinds of impact crusher, common ones and European Tech. ones, the European Tech impact crusher use world advanced technology, by using hydraulic systems, it can realise self-own to open the head part, which can quickly help to finish the replacement of wearing parts. When adjust the final sizes, hydraulic system can make adjustment of the impact shaft more quickly.

2. If the raw material is granite, whose hardness is about 6, then we suggest cone crusher. The wearing parts of cone crusher can be used for longer time and it is specially designed for hard stones.

We offer CS series spring cone crusher and HP Hydraulic cone crusher. CS series cone crusher has the advantages of various crushing cavity, high efficiency and low daily cost. HP hydraulic cone crusher is a world level cone crusher introduced Germany technology, which offers large capacity, stable operation, hydraulic lubrication and adjustment systems.

Any further questions please email us to sales@kefid.com or call us on 0086-371-86162530/ 0086-371-67998980.