During this period, the current of the main motor has no abnormal fluctuation, the lubrication of each lubrication point is normal, there is no oil leakage, ore leakage and water leakage, and the temperature of the main bearing is maintained at about 53 ℃.

After the operation state of the ultrafine mill's load test run meets the specified requirements of the test run, the load test run of the ultrafine mill shall be ended.

In the beneficiation production process, the test results of the ultrafine mill can directly affect the grinding quality and efficiency of the ultrafine mill in the later production.

The success rate of ultrafine mill commissioning can be greatly improved by adopting the phased commissioning process.