1. Rock Classification
Rock is kind of aggregation of one or multiple mineral. Base on difficulty degree of mining, it can be typed into soft rock, secondary-hard rock and hard rock.
1) Soft Rock: include all kinds of soft rocks, salt rock, conglomerate, shale, marlstone and limestone.
2) Secondary-hard Rock: include shale, sandstone, dolomite, limestone, marlite, basalt, gneiss, syenite and granite.
3) Hard Rock: include hard basalt, hard limestone, dolomite, marble, quartzite, diorite, granite and syenite.
2. Rock Crushing
After blasting, the rock should be crushed and screened in order to apply in all kinds of field.
At present, the main crushing is machinery crushing. When choose crusher, the rock material, hardness and wearing ability should be considered. As for hard rock, the jaw crusher, cone crusher can be used. As for soft rock, the impact crusher can be used.