A coal preparation plant in Inner Mongolia improved its process by using a three-product dense-medium cyclone. They changed the plant to make coal cleaning simpler and more effective while reducing costs. The new process can handle different types of coal and works well with coal from various mines. It's crucial for coal preparation to match coal properties and accommodate different raw coal types. The changes made in this plant show that with less money spent, the coal preparation process can be better and more adaptable to different kinds of coal.