1. The rotational speed of the rotor speed of the rotor impact crusher is the most important parameter, which directly affects the crusher's crushing efficiency, the crushing ratio and capacity. The speed of the rotor is determined according to its linear velocity v:
n=60Ï…/Ï€D(r/min)
Where D is the diameter of the rotor (m); Ï… is the linear velocity of the rotor (m/s).
The rotor linear speed is the same as that of the hammer crusher . It is generally selected within 15~80m/s, 15~40 m/s for coarse crushing and 40~80 m/s for fine crushing.
2. Productivity The productivity of a counter crusher is generally calculated according to the following empirical formula:
Q=60K1C(h+a)dbnδ(t/h)
Where, K1 - correction factor, generally takes O.1; C - the number of hammers on the rotor; h - the height of the hammer (m); a - the distance between the hammer and the counterattack (m); - the size of the ore discharge (m); b - the width of the hammer (m); n - the rotational speed of the rotor (r / min); δ - the loose density of the ore (t / m 3 ).
3. Motor Power The motor power of the impact crusher is currently calculated based on empirical formulas derived from production practices or experimental data.
(1) According to production practices:
P=KQ(kW)
Where Q, the crusher production capacity (t / h); K - specific power consumption (kW / t), usually for medium hardness limestone K = 0.5 ~ 2; for coal K = 0.8 ~ 1.5; Take the lower limit when crushing, and take the upper limit when crushing.
(2) According to experimental data:
P=K 0 Qi k2 (kW)
Where, Q - the capacity of the crusher (t / h); i - the crush ratio; K 0 - the proportional coefficient. Medium hardness material is taken as 0.026.
The double-rotor impact crusher is the sum of the powers of the two motors. Generally, the power consumption of the motor of the first-stage rotor is about 0.6-0.7 times that of the motor of the second-stage rotor.Single Axis Manipulator C Series
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