In the stage of ultrafine mill load test run, the ultrafine mill load test run is carried out under the condition of adding an appropriate amount of mineral material and water to the ultrafine mill.

In the whole process, it is necessary to gradually add materials to the ultrafine mill from no-load to full load. After running for a period of time, if there is no abnormality, the load commissioning operation of the ultrafine mill can be ended.

In the cyanidation gold extraction project of 1000t / D Gold Mine in Indonesia, SBM commissioning staff conducted load commissioning of the wet energy-saving overflow ultrafine mill in two stages, namely half load commissioning and full load commissioning.