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Rock drill
2021-03-17
① Rock drill: used to drill holes with a diameter of 20-100 millimeters and a depth of less than 20 meters in rocks of medium to hard or above. According to their different power, they can be divided into pneumatic, internal combustion, hydraulic, and electric rock drills, with pneumatic rock drills being the most widely used.
② Open pit drilling rig: According to the different working mechanisms for crushing ore and rock, it is divided into steel rope impact drilling rig, down-hole drilling rig, rotary drilling rig, and rotary drilling rig. Steel rope impact drills have gradually been replaced by other drills due to their low efficiency.
③ Underground drilling rig: When drilling underground blast holes with a diameter less than 150mm, in addition to using a rock drill, small diameter down-the-hole drills with a diameter of 80-150mm can also be used.
Phenomenon
RELEVANT INFORMATION
2019-01-09
The crushing operation is often divided into coarse crushing, medium crushing
2019-01-09
2019-01-09