Process design and practice of the HM coal cleaning at Xiaoyi Plant;

The paper describes some breakthrough developments in recent years in China's coal preparation with dense medium process and the important function served by wide spread application of dense medium coal preparation technology.

In dense medium coal preparation process, the changes of suspension technological parameters obviously affect the coal preparation result.

Taking the heavy medium three product cyclone coal preparation as the example, and based on the dynamic variation relationship between various technical parameters in the work process, a mathematic model of heavy medium coal preparation process control system that is suitable for different heavy medium coal preparation process is developed.