... working 3.Low noise,less dust High output impact gravel crusher Structure features:1, The rotor ... than general impact crusher at 20% 25%, with low energy consumption for high production capacity.3, ... hammer.5, Plate hammer the tall wearability, high toughness of chromium, molybdenum, vanadium alloy material, ... the whole board structure make discharging more a small particle size and cubic form, no inner ...