What is the Raymond mill for bauxite with superfine output size?

In grinding mill machines for all kinds of stones and rocks, Raymond mill is the most famous and popular one. Raymond Mill has lots of merits in grinding. Just for bauxite grinding, Raymond mill can grind it with 325 meshes with less consumption and stable capacity. But the bauxite has a condition limitation: moisture less than 6 percent. If not, it should be dried first.