| 摘要 |
An apparatus for breaking or crushing one or more objects into a plurality of smaller objects. The apparatus comprises a canister, an impeller disposed within the canister, and a means for rotating the impeller. The objects to be crushed are fed into the canister through an inlet port formed in a first side plate of the canister. The crushed objects are discharged from the canister through an outlet port formed in a second side plate of the canister. In one embodiment, the canister is formed such that the cross-sectional shape of the canister parallel to the first side plate is asymmetric with respect to the axis of rotation of the impeller. In another embodiment, the impeller comprises a plurality of blades formed with a paddle curved such that the concave end of the paddle faces into the airflow as the impeller is rotated. In yet another embodiment, the first side plate is formed opposite the second side plate so that the outlet port is on an opposite side of the canister from the inlet port. Preferably, the impeller has three blades. The outlet port or ports are preferably formed above the level of the inlet port or ports. The apparatus can crush ore having a mean diameter of 2 inches to 50 mesh particles in a matter of seconds. Better uniformity of size of discharged particles is obtained than in prior mills. The apparatus of the invention requires little maintenance since the impeller and canister interior sustain little wear or fatigue.
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