The raw granites are collected into the hopper from the loader or truck, and then the hard stones are fed into the jaw crusher PE750x1060 by the vibrating feeder ZSW1100x4200 for primary crushing. Then the outputs from jaw crusher will be stored in the surge hopper, and transported to the standard type cone crusher CSB160 to crush, the outputs will be separated by vibrating screen 3YZS2160; the size 0-5mm-20 mm–30mm will be screened out as final products, the size bigger than 30mm will be reverted to cone crusher for re-crushing. It is the circle crushing line; the raw material will be crushed again and again until all the output size below 30mm.