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Reasons for Spiral Classifier Shaft Rupture

Add Time:10/08/2015

Spiral classifier is a relatively important classifying equipment among the numerous mineral processing equipment and usually constitutes a closed loop circuit with ball mill. The production efficiency of spiral classifier can directly affects that of the closed loop circuit.

Once the spiral classifier breaks down, it will cause the whole mineral processing production line to interrupt and have a serious influence on its production efficiency. So when there is something wrong with the preparation equipment, we must find the causes and work out perfect solutions directing at the causes. Here let’s together analyze the reasons for shaft rupture of the spiral classifier.

spiral classifier

1. The breaking point on the spiral classifier’s shaft is worn out. The rupture on the spiral classifier’s shaft is directly facing the pulp-discharging chute. Due to the long-term washing of the torrential pulp or the erosion of the vortex formed by the turbulent pulp, the classifier shaft is liable to uneven wear and tear in this point.

2. Abnormal shut-down of the spiral classifier. Abnormal shut-down will cause the mineral sand in the cell of spiral classifier without circular overflow, and the excessive coarse sand deposits burden more load on the screw part when re-booting.

3. During the operating process of spiral classifier, because the one-time landing distance of the screw that the operator brings down is too large, it results in the loads on both large and small blades oversize, and thus causes the classifier shaft to break.