Stone crushing is generally determined by several factors :

1,The type of raw materials (it is limestone or it is greater hardness of granite,basalt)

2,The hardness of materials( it is mainly the percent of silicon content and water content)

3,The size of the raw materials and the size of the final product

4,The processing capacity

Granite, basalt, river gravel or other hard materials with high silicon are all difficult to break and will result a high crushing cost in the actual operations. Generally speaking, basalt is a hard and rather tough material, granite is hard and frail while the river gravel is relatively lower hardness but the highest silicon content. Therefore, when considering crushing the hard materials like these, we must take full accounts of the production line investment cost and practical issues with the purpose of obtaining maximum benefit return on investment.

During actual operations, if the materials we want to process are limestone or other low hard materials, the jaw plate of jaw crusher wears and tears very lightly, so we can see the common phenomenon that a jaw plate can keep operating one year without any replacement. Not only the low hardness of the limestone but also the low silicon content. So the abrasion of wear spare parts is reduced greatly.

However, when raw material is basalt, granite or other hard material, the jaw plate, hammer, impact plate and other quick spare parts will wear and tear badly. At the time, if the configuration of production line is still according to conventional regulations that jaw crusher as the primary machine and impact crusher as secondary machine, the maintenance cost rises greatly and that is very unreasonable for us. So we need to improve the crushing craft, we can adopt two jaw crushers and one cone crusher consisting a production line. Moreover, if the quality of final product size we expect is very high, one impact crusher can be added to shape. The craft with three sections crushers will inevitably lead to a higher investment cost, but for the long-term operation quarry, the producing cost reduces substantially.

Three different configurations ：

Option one: vibrating feeder + jaw crusher + impact crusher + vibrating screen

Option two: vibrating feeder + jaw crusher + small jaw crusher + impact crusher ( option or not) + vibrating screen

Option three: vibrating feeder + jaw crusher + cone crusher + impact crusher ( option or not) + vibrating screen

If you need more support, please feel free to contact with us, Kefid company will do our best for you.