Abstract：With the progress of frequency conversion technology, the application of frequency converter is more and more widely. Compared with the traditional speed control method, it has great advantages, easy to control, energy saving and so on. In recent years, it has played a certain role in the transformation of coal washing plant.taking Xingtai Coal Preparation Plant as an example, the research and application of frequency converter in uniform feeding, water balance, centrifuge optimization and flotation machine optimization were introduced, indicating that frequency conversion technology plays an important role in actual production.
