Slag vertical mill in the no-load test is not loaded media (ball, stick) and materials in the case of idling. Continuous operation should not be less than 4h, usually to run 8 ~ 16h, can be determined according to the specific circumstances. The longer the test run, the better the vertical grinding of the main bearing, gear tooth surface.

No-load test should meet the following requirements:

1) The lubricating point lubrication is normal, there is no oil spill phenomenon.

2) The temperature of the vertical grinding main bearing should not exceed 50 ℃.

3) The slag vertical ultrafine grinding runs smoothly, the gear transmission has no abnormal noise.

4) The liner and the transmission parts without loosening.

5) ministries running in line with maintenance requirements.

When the idling reaches the specified time, stop the vertical grinding operation of the slag, carefully inspect all the working parts, tighten the liner bolts to eliminate the defects found.After passing the no-load test, load test can be carried out. Load test to gradually feed until full load. After normal feeding run 10 ~ 20 h.

Load operation should meet the following requirements:

1) smooth work without periodic sharp vibration.

2) The main current of the ultra-fine grinding mill is no abnormal fluctuations.

3) The lubrication points lubrication normal, the main bearing temperature does not exceed 60 ℃.

4) The superfine slag vertical grinding work part of the bolts, into the hole, the flange surface and the seal at no leakage, leaking pulp and so on.

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